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@@ -4,47 +4,6
4 4 // version 1.2: 30/04/2014
5 5
6 6 #include "basic_parameters.h"
7 #include <math.h>
8 #include <stdio.h>
9 #include <stdint.h>
10
11 #define K44_PE 0
12 #define K55_PE 1
13 #define K45_PE_RE 2
14 #define K45_PE_IM 3
15
16 #define K14_SX_RE 4
17 #define K14_SX_IM 5
18 #define K15_SX_RE 6
19 #define K15_SX_IM 7
20 #define K24_SX_RE 8
21 #define K24_SX_IM 9
22 #define K25_SX_RE 10
23 #define K25_SX_IM 11
24 #define K34_SX_RE 12
25 #define K34_SX_IM 13
26 #define K35_SX_RE 14
27 #define K35_SX_IM 15
28
29 #define K24_NY_RE 16
30 #define K24_NY_IM 17
31 #define K25_NY_RE 18
32 #define K25_NY_IM 19
33 #define K34_NY_RE 20
34 #define K34_NY_IM 21
35 #define K35_NY_RE 22
36 #define K35_NY_IM 23
37
38 #define K24_NZ_RE 24
39 #define K24_NZ_IM 25
40 #define K25_NZ_RE 26
41 #define K25_NZ_IM 27
42 #define K34_NZ_RE 28
43 #define K34_NZ_IM 29
44 #define K35_NZ_RE 30
45 #define K35_NZ_IM 31
46
47 float k_f0[NB_BINS_COMPRESSED_MATRIX_f0][32];
48 7
49 8 void init_k_f0( void )
50 9 {
@@ -89,793 +48,3 void init_k_f0( void )
89 48 }
90 49 }
91 50
92 float alpha_M = 45 * (3.1415927/180);
93
94 void BP1_set( float * compressed_spec_mat, uint8_t nb_bins_compressed_spec_mat, uint8_t * lfr_bp1 ){
95 int exponent; // 32 bits signed
96 float PSDB; // 32 bits floating point
97 float PSDE;
98 float tmp;
99 float NVEC_V0;
100 float NVEC_V1;
101 float NVEC_V2;
102 float aux;
103 float tr_SB_SB;
104 float e_cross_b_re;
105 float e_cross_b_im;
106 float n_cross_e_scal_b_re;
107 float n_cross_e_scal_b_im;
108 float ny;
109 float nz;
110 float bx_bx_star;
111 float vphi;
112 float significand;
113 uint8_t nbitexp; // 8 bits unsigned
114 uint8_t nbitsig;
115 uint8_t tmp_uint8;
116 uint8_t *pt_uint8; // pointer on unsigned 8-bit bytes
117 int8_t expmin; // 8 bits signed
118 int8_t expmax;
119 int16_t rangesig; // 16 bits unsigned
120 uint16_t psd;
121 uint16_t exp;
122 uint16_t tmp_uint16;
123 uint16_t i;
124
125 init_k_f0();
126
127 #ifdef DEBUG_TCH
128 printf("BP1 : \n");
129 printf("Number of bins: %d\n", nb_bins_compressed_spec_mat);
130 #endif
131
132 // initialization for managing the exponents of the floating point data:
133 nbitexp = 5; // number of bits for the exponent
134 expmax = 30; // maximum value of the exponent
135 expmin = expmax - (1 << nbitexp) + 1; // accordingly the minimum exponent value
136 // for floating point data to be recorded on 12-bit words:
137 nbitsig = 12 - nbitexp; // number of bits for the significand
138 rangesig = (1 << nbitsig)-1; // == 2^nbitsig - 1
139
140 #ifdef DEBUG_TCH
141 printf("nbitexp : %d, expmax : %d, expmin : %d\n", nbitexp, expmax, expmin);
142 printf("nbitsig : %d, rangesig : %d\n", nbitsig, rangesig);
143 #endif
144
145 for(i=0; i<nb_bins_compressed_spec_mat; i++){
146 //==============================================
147 // BP1 PSDB == PA_LFR_SC_BP1_PB_F0 == 12 bits = 5 bits (exponent) + 7 bits (significand)
148 PSDB = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX] // S11
149 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] // S22
150 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]; // S33
151
152 significand = frexpf(PSDB/3, &exponent); // 0.5 <= significand < 1
153 // PSDB/3 = significand * 2^exponent
154 // the division by 3 is to ensure that max value <= 2^30
155
156 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
157 exponent = expmin;
158 significand = 0.5; // min value that can be recorded
159 }
160 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
161 exponent = expmax;
162 significand = 1.0; // max value that can be recorded
163 }
164 if (significand == 0) {// in that case exponent == 0 too
165 exponent = expmin;
166 significand = 0.5; // min value that can be recorded
167 }
168
169 psd = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
170 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
171 exp = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int where just
172 // the first nbitexp bits are used (0, ..., 2^nbitexp-1)
173 tmp_uint16 = psd | (exp << nbitsig); // Put the exponent bits (nbitexp) next to the
174 // left place of the significand bits (nbitsig),
175 // making the 16-bit word to be recorded
176 pt_uint8 = (uint8_t*) &tmp_uint16; // Affect an uint8_t pointer with the adress of tmp_uint16
177 #ifdef LSB_FIRST_TCH
178 lfr_bp1[i*NB_BYTES_BP1+2] = pt_uint8[0]; // Record LSB of tmp_uint16
179 lfr_bp1[i*NB_BYTES_BP1+3] = pt_uint8[1]; // Record MSB of tmp_uint16
180 #endif
181 #ifdef MSB_FIRST_TCH
182 lfr_bp1[i*NB_BYTES_BP1+2] = pt_uint8[1]; // Record LSB of tmp_uint16
183 lfr_bp1[i*NB_BYTES_BP1+3] = pt_uint8[0]; // Record MSB of tmp_uint16
184 #endif
185 #ifdef DEBUG_TCH
186 printf("\nBin number: %d\n", i);
187 printf("PSDB / 3 : %16.8e\n",PSDB/3);
188 printf("significand : %16.8e\n",significand);
189 printf("exponent : %d\n" ,exponent);
190 printf("psd for PSDB significand : %d\n",psd);
191 printf("exp for PSDB exponent : %d\n",exp);
192 printf("pt_uint8[1] for PSDB exponent + significand: %.3d or %.2x\n",pt_uint8[1], pt_uint8[1]);
193 printf("pt_uint8[0] for PSDB exponent + significand: %.3d or %.2x\n",pt_uint8[0], pt_uint8[0]);
194 printf("lfr_bp1[i*NB_BYTES_BP1+3] : %.3d or %.2x\n",lfr_bp1[i*NB_BYTES_BP1+3], lfr_bp1[i*NB_BYTES_BP1+3]);
195 printf("lfr_bp1[i*NB_BYTES_BP1+2] : %.3d or %.2x\n",lfr_bp1[i*NB_BYTES_BP1+2], lfr_bp1[i*NB_BYTES_BP1+2]);
196 #endif
197 //==============================================
198 // BP1 PSDE == PA_LFR_SC_BP1_PE_F0 == 12 bits = 5 bits (exponent) + 7 bits (significand)
199 PSDE = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21] * k_f0[i][K44_PE] // S44
200 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24] * k_f0[i][K55_PE] // S55
201 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+22] * k_f0[i][K45_PE_RE] // S45 Re
202 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+23] * k_f0[i][K45_PE_IM]; // S45 Im
203
204 significand = frexpf(PSDE/2, &exponent); // 0.5 <= significand < 1
205 // PSDE/2 = significand * 2^exponent
206 // the division by 2 is to ensure that max value <= 2^30
207 // should be reconsidered by taking into account the k-coefficients ...
208
209 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
210 exponent = expmin;
211 significand = 0.5; // min value that can be recorded
212 }
213 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
214 exponent = expmax;
215 significand = 1.0; // max value that can be recorded
216 }
217 if (significand == 0) {// in that case exponent == 0 too
218 exponent = expmin;
219 significand = 0.5; // min value that can be recorded
220 }
221
222 psd = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
223 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
224 exp = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int where just
225 // the first nbitexp bits are used (0, ..., 2^nbitexp-1)
226 tmp_uint16 = psd | (exp << nbitsig); // Put the exponent bits (nbitexp) next to the
227 // left place of the significand bits (nbitsig),
228 // making the 16-bit word to be recorded
229 pt_uint8 = (uint8_t*) &tmp_uint16; // Affect an uint8_t pointer with the adress of tmp_uint16
230 #ifdef LSB_FIRST_TCH
231 lfr_bp1[i*NB_BYTES_BP1+0] = pt_uint8[0]; // Record LSB of tmp_uint16
232 lfr_bp1[i*NB_BYTES_BP1+1] = pt_uint8[1]; // Record MSB of tmp_uint16
233 #endif
234 #ifdef MSB_FIRST_TCH
235 lfr_bp1[i*NB_BYTES_BP1+0] = pt_uint8[1]; // Record LSB of tmp_uint16
236 lfr_bp1[i*NB_BYTES_BP1+1] = pt_uint8[0]; // Record MSB of tmp_uint16
237 #endif
238 #ifdef DEBUG_TCH
239 printf("Bin number: %d\n", i);
240 printf("PSDE/2 : %16.8e\n",PSDE/2);
241 printf("significand : %16.8e\n",significand);
242 printf("exponent : %d\n" ,exponent);
243 printf("psd for PSDE significand : %d\n",psd);
244 printf("exp for PSDE exponent : %d\n",exp);
245 printf("pt_uint8[1] for PSDE exponent + significand: %.3d or %.2x\n",pt_uint8[1], pt_uint8[1]);
246 printf("pt_uint8[0] for PSDE exponent + significand: %.3d or %.2x\n",pt_uint8[0], pt_uint8[0]);
247 printf("lfr_bp1[i*NB_BYTES_BP1+1] : %.3d or %.2x\n",lfr_bp1[i*NB_BYTES_BP1+1], lfr_bp1[i*NB_BYTES_BP1+1]);
248 printf("lfr_bp1[i*NB_BYTES_BP1+0] : %.3d or %.2x\n",lfr_bp1[i*NB_BYTES_BP1+0], lfr_bp1[i*NB_BYTES_BP1+0]);
249 #endif
250 //==============================================================================
251 // BP1 normal wave vector == PA_LFR_SC_BP1_NVEC_V0_F0 == 8 bits
252 // == PA_LFR_SC_BP1_NVEC_V1_F0 == 8 bits
253 // == PA_LFR_SC_BP1_NVEC_V2_F0 == 1 sign bit
254 tmp = sqrt( compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] //Im S12
255 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] //Im S13
256 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11] //Im S23
257 );
258 NVEC_V0 = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]/ tmp; // S23 Im => n1
259 NVEC_V1 = -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] / tmp; // S13 Im => n2
260 NVEC_V2 = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] / tmp; // S12 Im => n3
261
262 lfr_bp1[i*NB_BYTES_BP1+4] = (uint8_t) (NVEC_V0*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
263 lfr_bp1[i*NB_BYTES_BP1+5] = (uint8_t) (NVEC_V1*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
264 pt_uint8 = (uint8_t*) &NVEC_V2; // affect an uint8_t pointer with the adress of NVEC_V2
265 #ifdef LSB_FIRST_TCH
266 lfr_bp1[i*NB_BYTES_BP1+6] = pt_uint8[3] & 0x80; // extract the sign bit of NVEC_V2 (32-bit float, sign bit in the 4th octet:PC convention)
267 // record it at the 8th bit position (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
268 #endif
269 #ifdef MSB_FIRST_TCH
270 lfr_bp1[i*NB_BYTES_BP1+6] = pt_uint8[0] & 0x80; // extract the sign bit of NVEC_V2 (32-bit float, sign bit in the 0th octet:SPARC convention)
271 // record it at the 8th bit position (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
272 #endif
273 #ifdef DEBUG_TCH
274 printf("NVEC_V0 : %16.8e\n",NVEC_V0);
275 printf("NVEC_V1 : %16.8e\n",NVEC_V1);
276 printf("NVEC_V2 : %16.8e\n",NVEC_V2);
277 printf("lfr_bp1[i*NB_BYTES_BP1+4] for NVEC_V0 : %u\n",lfr_bp1[i*NB_BYTES_BP1+4]);
278 printf("lfr_bp1[i*NB_BYTES_BP1+5] for NVEC_V1 : %u\n",lfr_bp1[i*NB_BYTES_BP1+5]);
279 printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
280 #endif
281 //=======================================================
282 // BP1 ellipticity == PA_LFR_SC_BP1_ELLIP_F0 == 4 bits
283 aux = 2*tmp / PSDB; // compute the ellipticity
284
285 tmp_uint8 = (uint8_t) (aux*15 + 0.5); // shift and cast into a 8-bit uint8_t with rounding
286 // where just the first 4 bits are used (0, ..., 15)
287 lfr_bp1[i*NB_BYTES_BP1+6] = lfr_bp1[i*NB_BYTES_BP1+6] | (tmp_uint8 << 3); // put these 4 bits next to the right place
288 // of the sign bit of NVEC_V2 (recorded
289 // previously in lfr_bp1[i*NB_BYTES_BP1+6])
290 #ifdef DEBUG_TCH
291 printf("ellipticity : %16.8e\n",aux);
292 printf("tmp_uint8 for ellipticity : %u\n",tmp_uint8);
293 printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 + ellipticity : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
294 #endif
295 //==============================================================
296 // BP1 degree of polarization == PA_LFR_SC_BP1_DOP_F0 == 3 bits
297 tr_SB_SB = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]
298 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]
299 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]
300 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1]
301 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2]
302 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3]
303 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4]
304 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]
305 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11];
306 aux = PSDB*PSDB;
307 tmp = ( 3*tr_SB_SB - aux ) / ( 2 * aux ); // compute the degree of polarisation
308
309 tmp_uint8 = (uint8_t) (tmp*7 + 0.5);// shift and cast into a 8-bit uint8_t with rounding
310 // where just the first 3 bits are used (0, ..., 7)
311 lfr_bp1[i*NB_BYTES_BP1+6] = lfr_bp1[i*NB_BYTES_BP1+6] | tmp_uint8; // record these 3 bits at the 3 first bit positions
312 // (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
313 #ifdef DEBUG_TCH
314 printf("DOP : %16.8e\n",tmp);
315 printf("tmp_uint8 for DOP : %u\n",tmp_uint8);
316 printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 + ellipticity + DOP : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
317 #endif
318 //=======================================================================================
319 // BP1 X_SO-component of the Poynting flux == PA_LFR_SC_BP1_SX_F0 == 8 (+ 2) bits
320 // = 5 bits (exponent) + 3 bits (significand)
321 // + 1 sign bit + 1 argument bit (two sectors)
322 e_cross_b_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_SX_RE] //S34 Re
323 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_SX_RE] //S35 Re
324 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] *k_f0[i][K14_SX_RE] //S14 Re
325 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] *k_f0[i][K15_SX_RE] //S15 Re
326 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_SX_RE] //S24 Re
327 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_SX_RE] //S25 Re
328 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_SX_IM] //S34 Im
329 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_SX_IM] //S35 Im
330 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] *k_f0[i][K14_SX_IM] //S14 Im
331 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] *k_f0[i][K15_SX_IM] //S15 Im
332 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_SX_IM] //S24 Im
333 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_SX_IM]; //S25 Im
334 // Im(S_ji) = -Im(S_ij)
335 // k_ji = k_ij
336 e_cross_b_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_SX_IM] //S34 Re
337 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_SX_IM] //S35 Re
338 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] *k_f0[i][K14_SX_IM] //S14 Re
339 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] *k_f0[i][K15_SX_IM] //S15 Re
340 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_SX_IM] //S24 Re
341 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_SX_IM] //S25 Re
342 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_SX_RE] //S34 Im
343 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_SX_RE] //S35 Im
344 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] *k_f0[i][K14_SX_RE] //S14 Im
345 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] *k_f0[i][K15_SX_RE] //S15 Im
346 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_SX_RE] //S24 Im
347 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_SX_RE]; //S25 Im
348 #ifdef DEBUG_TCH
349 printf("ReaSX / 2 : %16.8e\n",e_cross_b_re/2);
350 #endif
351 pt_uint8 = (uint8_t*) &e_cross_b_re; // Affect an uint8_t pointer with the adress of e_cross_b_re
352 #ifdef LSB_FIRST_TCH
353 lfr_bp1[i*NB_BYTES_BP1+1] = lfr_bp1[i*NB_BYTES_BP1+1] | (pt_uint8[3] & 0x80); // Extract its sign bit (32-bit float, sign bit in the 4th octet:PC convention)
354 // Record it at the 8th bit position (from the right to the left)
355 // of lfr_bp1[i*NB_BYTES_BP1+1]
356 pt_uint8[3] = (pt_uint8[3] & 0x7f); // Make e_cross_b_re be positive in any case: |ReaSX|
357 #endif
358 #ifdef MSB_FIRST_TCH
359 lfr_bp1[i*NB_BYTES_BP1+1] = lfr_bp1[i*NB_BYTES_BP1+1] | (pt_uint8[0] & 0x80); // Extract its sign bit (32-bit float, sign bit in the 0th octet:SPARC convention)
360 // Record it at the 8th bit position (from the right to the left)
361 // of lfr_bp1[i*NB_BYTES_BP1+1]
362 pt_uint8[0] = (pt_uint8[0] & 0x7f); // Make e_cross_b_re be positive in any case: |ReaSX|
363 #endif
364 significand = frexpf(e_cross_b_re/2, &exponent);// 0.5 <= significand < 1
365 // ReaSX/2 = significand * 2^exponent
366 // The division by 2 is to ensure that max value <= 2^30 (rough estimate)
367 // Should be reconsidered by taking into account the k-coefficients ...
368
369 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
370 exponent = expmin;
371 significand = 0.5; // min value that can be recorded
372 }
373 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
374 exponent = expmax;
375 significand = 1.0; // max value that can be recorded
376 }
377 if (significand == 0) {// in that case exponent == 0 too
378 exponent = expmin;
379 significand = 0.5; // min value that can be recorded
380 }
381
382 lfr_bp1[i*NB_BYTES_BP1+7] = (uint8_t) ((significand*2-1)*7 + 0.5); // Shift and cast into a 8-bit uint8_t with rounding
383 // where just the first 3 bits are used (0, ..., 7)
384 tmp_uint8 = (uint8_t) (exponent-expmin); // Shift and cast into a 8-bit uint8_t where
385 // just the first 5 bits are used (0, ..., 2^5-1)
386 #ifdef DEBUG_TCH
387 printf("|ReaSX| / 2 : %16.8e\n",e_cross_b_re/2);
388 printf("significand : %16.8e\n",significand);
389 printf("exponent : %d\n" ,exponent);
390 printf("lfr_bp1[i*NB_BYTES_BP1+7] for ReaSX significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+7]);
391 printf("tmp_uint8 for ReaSX exponent : %d\n",tmp_uint8);
392 #endif
393 lfr_bp1[i*NB_BYTES_BP1+7] = lfr_bp1[i*NB_BYTES_BP1+7] | (tmp_uint8 << 3); // shift these 5 bits to the left before logical addition
394 // with lfr_bp1[i*NB_BYTES_BP1+7]
395 #ifdef DEBUG_TCH
396 printf("lfr_bp1[i*NB_BYTES_BP1+7] for ReaSX exponent + significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+7]);
397 printf("lfr_bp1[i*NB_BYTES_BP1+1] for ReaSX sign + PSDE 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+1]);
398 printf("ImaSX / 2 : %16.8e\n",e_cross_b_im/2);
399 #endif
400 pt_uint8 = (uint8_t*) &e_cross_b_im; // Affect an uint8_t pointer with the adress of e_cross_b_im
401 #ifdef LSB_FIRST_TCH
402 pt_uint8[3] = pt_uint8[3] & 0x7f; // Make e_cross_b_im be positive in any case: |ImaSX|
403 #endif
404 #ifdef MSB_FIRST_TCH
405 pt_uint8[0] = pt_uint8[0] & 0x7f; // Make e_cross_b_im be positive in any case: |ImaSX|
406 #endif
407 tmp_uint8 = (e_cross_b_im > e_cross_b_re) ? 0x40 : 0x00; // Determine the sector argument of SX. If |Im| > |Re| affect
408 // an unsigned 8-bit char with 01000000; otherwise with null.
409 lfr_bp1[i*NB_BYTES_BP1+1] = lfr_bp1[i*NB_BYTES_BP1+1] | tmp_uint8; // Record it as a sign bit at the 7th bit position (from the right
410 // to the left) of lfr_bp1[i*NB_BYTES_BP1+1], by simple logical addition.
411 #ifdef DEBUG_TCH
412 printf("|ImaSX| / 2 : %16.8e\n",e_cross_b_im/2);
413 printf("ArgSX sign : %u\n",tmp_uint8);
414 printf("lfr_bp1[i*NB_BYTES_BP1+1] for ReaSX & ArgSX signs + PSDE 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+1]);
415 #endif
416 //======================================================================
417 // BP1 phase velocity estimator == PA_LFR_SC_BP1_VPHI_F0 == 8 (+ 2) bits
418 // = 5 bits (exponent) + 3 bits (significand)
419 // + 1 sign bit + 1 argument bit (two sectors)
420 ny = sin(alpha_M)*NVEC_V1 + cos(alpha_M)*NVEC_V2;
421 nz = NVEC_V0;
422 bx_bx_star = cos(alpha_M)*cos(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] // S22 Re
423 + sin(alpha_M)*sin(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16] // S33 Re
424 - 2*sin(alpha_M)*cos(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]; // S23 Re
425
426 n_cross_e_scal_b_re = ny * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NY_RE] //S24 Re
427 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NY_RE] //S25 Re
428 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NY_RE] //S34 Re
429 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NY_RE] //S35 Re
430 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NY_IM] //S24 Im
431 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NY_IM] //S25 Im
432 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NY_IM] //S34 Im
433 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NY_IM]) //S35 Im
434 + nz * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NZ_RE] //S24 Re
435 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NZ_RE] //S25 Re
436 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NZ_RE] //S34 Re
437 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NZ_RE] //S35 Re
438 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NZ_IM] //S24 Im
439 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NZ_IM] //S25 Im
440 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NZ_IM] //S34 Im
441 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NZ_IM]);//S35 Im
442 // Im(S_ji) = -Im(S_ij)
443 // k_ji = k_ij
444 n_cross_e_scal_b_im = ny * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NY_IM] //S24 Re
445 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NY_IM] //S25 Re
446 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NY_IM] //S34 Re
447 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NY_IM] //S35 Re
448 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NY_RE] //S24 Im
449 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NY_RE] //S25 Im
450 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NY_RE] //S34 Im
451 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NY_RE]) //S35 Im
452 + nz * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NZ_IM] //S24 Re
453 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NZ_IM] //S25 Re
454 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NZ_IM] //S34 Re
455 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NZ_IM] //S35 Re
456 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NZ_RE] //S24 Im
457 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NZ_RE] //S25 Im
458 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NZ_RE] //S34 Im
459 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NZ_RE]);//S35 Im
460 #ifdef DEBUG_TCH
461 printf("n_cross_e_scal_b_re : %16.8e\n",n_cross_e_scal_b_re);
462 printf("n_cross_e_scal_b_im : %16.8e\n",n_cross_e_scal_b_im);
463 #endif
464 // vphi = n_cross_e_scal_b_re / bx_bx_star => sign(VPHI) = sign(n_cross_e_scal_b_re)
465 pt_uint8 = (uint8_t*) &n_cross_e_scal_b_re; // Affect an uint8_t pointer with the adress of n_cross_e_scal_b_re
466 #ifdef LSB_FIRST_TCH
467 lfr_bp1[i*NB_BYTES_BP1+3] = lfr_bp1[i*NB_BYTES_BP1+3] | (pt_uint8[3] & 0x80); // Extract its sign bit (32-bit float, sign bit in the 4th octet:PC convention)
468 // Record it at the 8th bit position (from the right to the left)
469 // of lfr_bp1[i*NB_BYTES_BP1+3]
470 pt_uint8[3] = (pt_uint8[3] & 0x7f); // Make n_cross_e_scal_b_re be positive in any case: |n_cross_e_scal_b_re|
471 #endif
472 #ifdef MSB_FIRST_TCH
473 lfr_bp1[i*NB_BYTES_BP1+3] = lfr_bp1[i*NB_BYTES_BP1+3] | (pt_uint8[0] & 0x80); // Extract its sign bit (32-bit float, sign bit in the 0th octet:SPARC convention)
474 // Record it at the 8th bit position (from the right to the left)
475 // of lfr_bp1[i*NB_BYTES_BP1+3]
476 pt_uint8[0] = (pt_uint8[0] & 0x7f); // Make n_cross_e_scal_b_re be positive in any case: |n_cross_e_scal_b_re|
477 #endif
478 vphi = n_cross_e_scal_b_re / bx_bx_star; // Compute |VPHI|
479
480 significand = frexpf(vphi/2, &exponent); // 0.5 <= significand < 1
481 // vphi/2 = significand * 2^exponent
482 // The division by 2 is to ensure that max value <= 2^30 (rough estimate)
483 // Should be reconsidered by taking into account the k-coefficients ...
484
485 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
486 exponent = expmin;
487 significand = 0.5; // min value that can be recorded
488 }
489 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
490 exponent = expmax;
491 significand = 1.0; // max value that can be recorded
492 }
493 if (significand == 0) {// in that case exponent == 0 too
494 exponent = expmin;
495 significand = 0.5; // min value that can be recorded
496 }
497 #ifdef DEBUG_TCH
498 printf("|VPHI| / 2 : %16.8e\n",vphi/2);
499 printf("significand : %16.8e\n",significand);
500 printf("exponent : %d\n" ,exponent);
501 #endif
502 lfr_bp1[i*NB_BYTES_BP1+8] = (uint8_t) ((significand*2-1)*7 + 0.5); // Shift and cast into a 8-bit uint8_t with rounding
503 // where just the first 3 bits are used (0, ..., 7)
504 tmp_uint8 = (uint8_t) (exponent-expmin); // Shift and cast into a 8-bit uint8_t where
505 // just the first 5 bits are used (0, ..., 2^5-1)
506 #ifdef DEBUG_TCH
507 printf("lfr_bp1[i*NB_BYTES_BP1+8] for VPHI significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+8]);
508 printf("tmp_uint8 for VPHI exponent : %d\n",tmp_uint8);
509 #endif
510 lfr_bp1[i*NB_BYTES_BP1+8] = lfr_bp1[i*NB_BYTES_BP1+8] | (tmp_uint8 << 3); // shift these 5 bits to the left before logical addition
511 // with lfr_bp1[i*NB_BYTES_BP1+8]
512 #ifdef DEBUG_TCH
513 printf("lfr_bp1[i*NB_BYTES_BP1+8] for VPHI exponent + significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+8]);
514 printf("lfr_bp1[i*NB_BYTES_BP1+3] for VPHI sign + PSDB 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+3]);
515 #endif
516 pt_uint8 = (uint8_t*) &n_cross_e_scal_b_im; // Affect an uint8_t pointer with the adress of n_cross_e_scal_b_im
517 #ifdef LSB_FIRST_TCH
518 pt_uint8[3] = pt_uint8[3] & 0x7f; // Make n_cross_e_scal_b_im be positive in any case: |ImaSX|
519 #endif
520 #ifdef MSB_FIRST_TCH
521 pt_uint8[0] = pt_uint8[0] & 0x7f; // Make n_cross_e_scal_b_im be positive in any case: |ImaSX|
522 #endif
523 tmp_uint8 = (n_cross_e_scal_b_im > n_cross_e_scal_b_re) ? 0x40 : 0x00; // Determine the sector argument of SX. If |Im| > |Re| affect
524 // an unsigned 8-bit char with 01000000; otherwise with null.
525 lfr_bp1[i*NB_BYTES_BP1+3] = lfr_bp1[i*NB_BYTES_BP1+3] | tmp_uint8; // Record it as a sign bit at the 7th bit position (from the right
526 // to the left) of lfr_bp1[i*NB_BYTES_BP1+3], by simple logical addition.
527 #ifdef DEBUG_TCH
528 printf("|n_cross_e_scal_b_im| : %16.8e\n",n_cross_e_scal_b_im);
529 printf("|n_cross_e_scal_b_im|/bx_bx_star/2: %16.8e\n",n_cross_e_scal_b_im/bx_bx_star/2);
530 printf("ArgNEBX sign : %u\n",tmp_uint8);
531 printf("lfr_bp1[i*NB_BYTES_BP1+3] for VPHI & ArgNEBX signs + PSDB 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+3]);
532 #endif
533 }
534 }
535
536 void BP2_set( float * compressed_spec_mat, uint8_t nb_bins_compressed_spec_mat, uint8_t * lfr_bp2 )
537 {
538 int i, exponent;
539 float aux, significand, cross_re, cross_im;
540 int8_t nbitexp, nbitsig, expmin, expmax; // 8 bits
541 int16_t rangesig; // 16 bits
542 uint16_t autocor, tmp_uint16; // 16 bits
543 uint16_t *pt_u_short_int; // pointer on unsigned 16-bit words
544
545 #ifdef DEBUG_TCH
546 printf("BP2 : \n");
547 printf("Number of bins: %d\n", nb_bins_compressed_spec_mat);
548 #endif
549
550 // For floating point data to be recorded on 16-bit words :
551 nbitexp = 6; // number of bits for the exponent
552 nbitsig = 16 - nbitexp; // number of bits for the significand
553 rangesig = (1 << nbitsig)-1; // == 2^nbitsig - 1
554 expmax = 32;
555 expmin = expmax - (1 << nbitexp) + 1;
556
557 #ifdef DEBUG_TCH
558 printf("nbitexp : %d, nbitsig : %d, rangesig : %d\n", nbitexp, nbitsig, rangesig);
559 printf("expmin : %d, expmax : %d\n", expmin, expmax);
560 #endif
561
562 for(i = 0; i<nb_bins_compressed_spec_mat; i++){
563 //==============================================
564 // BP2 normalized cross correlations == PA_LFR_SC_BP2_CROSS_F0 == 10 * (8+8) bits
565 // == PA_LFR_SC_BP2_CROSS_RE_0_F0 == 8 bits
566 // == PA_LFR_SC_BP2_CROSS_IM_0_F0 == 8 bits
567 // == PA_LFR_SC_BP2_CROSS_RE_1_F0 == 8 bits
568 // == PA_LFR_SC_BP2_CROSS_IM_1_F0 == 8 bits
569 // == PA_LFR_SC_BP2_CROSS_RE_2_F0 == 8 bits
570 // == PA_LFR_SC_BP2_CROSS_IM_2_F0 == 8 bits
571 // == PA_LFR_SC_BP2_CROSS_RE_3_F0 == 8 bits
572 // == PA_LFR_SC_BP2_CROSS_IM_3_F0 == 8 bits
573 // == PA_LFR_SC_BP2_CROSS_RE_4_F0 == 8 bits
574 // == PA_LFR_SC_BP2_CROSS_IM_4_F0 == 8 bits
575 // == PA_LFR_SC_BP2_CROSS_RE_5_F0 == 8 bits
576 // == PA_LFR_SC_BP2_CROSS_IM_5_F0 == 8 bits
577 // == PA_LFR_SC_BP2_CROSS_RE_6_F0 == 8 bits
578 // == PA_LFR_SC_BP2_CROSS_IM_6_F0 == 8 bits
579 // == PA_LFR_SC_BP2_CROSS_RE_7_F0 == 8 bits
580 // == PA_LFR_SC_BP2_CROSS_IM_7_F0 == 8 bits
581 // == PA_LFR_SC_BP2_CROSS_RE_8_F0 == 8 bits
582 // == PA_LFR_SC_BP2_CROSS_IM_8_F0 == 8 bits
583 // == PA_LFR_SC_BP2_CROSS_RE_9_F0 == 8 bits
584 // == PA_LFR_SC_BP2_CROSS_IM_9_F0 == 8 bits
585 // S12
586 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]);
587 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1] / aux;
588 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] / aux;
589 lfr_bp2[i*NB_BYTES_BP2+10] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
590 lfr_bp2[i*NB_BYTES_BP2+20] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
591 #ifdef DEBUG_TCH
592 printf("\nBin number: %d\n", i);
593 printf("lfr_bp2[i*NB_BYTES_BP2+10] for cross12_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+10]);
594 printf("lfr_bp2[i*NB_BYTES_BP2+20] for cross12_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+20]);
595 #endif
596 // S13
597 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
598 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3] / aux;
599 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] / aux;
600 lfr_bp2[i*NB_BYTES_BP2+11] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
601 lfr_bp2[i*NB_BYTES_BP2+21] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
602 #ifdef DEBUG_TCH
603 printf("lfr_bp2[i*NB_BYTES_BP2+11] for cross13_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+11]);
604 printf("lfr_bp2[i*NB_BYTES_BP2+21] for cross13_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+21]);
605 #endif
606 // S14
607 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
608 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] / aux;
609 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] / aux;
610 lfr_bp2[i*NB_BYTES_BP2+12] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
611 lfr_bp2[i*NB_BYTES_BP2+22] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
612 #ifdef DEBUG_TCH
613 printf("lfr_bp2[i*NB_BYTES_BP2+12] for cross14_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+12]);
614 printf("lfr_bp2[i*NB_BYTES_BP2+22] for cross14_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+22]);
615 #endif
616 // S15
617 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
618 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] / aux;
619 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] / aux;
620 lfr_bp2[i*NB_BYTES_BP2+13] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
621 lfr_bp2[i*NB_BYTES_BP2+23] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
622 #ifdef DEBUG_TCH
623 printf("lfr_bp2[i*NB_BYTES_BP2+13] for cross15_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+13]);
624 printf("lfr_bp2[i*NB_BYTES_BP2+23] for cross15_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+23]);
625 #endif
626 // S23
627 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
628 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10] / aux;
629 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11] / aux;
630 lfr_bp2[i*NB_BYTES_BP2+14] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
631 lfr_bp2[i*NB_BYTES_BP2+24] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
632 #ifdef DEBUG_TCH
633 printf("lfr_bp2[i*NB_BYTES_BP2+14] for cross23_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+14]);
634 printf("lfr_bp2[i*NB_BYTES_BP2+24] for cross23_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+24]);
635 #endif
636 // S24
637 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
638 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12] / aux;
639 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13] / aux;
640 lfr_bp2[i*NB_BYTES_BP2+15] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
641 lfr_bp2[i*NB_BYTES_BP2+25] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
642 #ifdef DEBUG_TCH
643 printf("lfr_bp2[i*NB_BYTES_BP2+15] for cross24_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+15]);
644 printf("lfr_bp2[i*NB_BYTES_BP2+25] for cross24_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+25]);
645 #endif
646 // S25
647 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
648 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14] / aux;
649 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15] / aux;
650 lfr_bp2[i*NB_BYTES_BP2+16] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
651 lfr_bp2[i*NB_BYTES_BP2+26] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
652 #ifdef DEBUG_TCH
653 printf("lfr_bp2[i*NB_BYTES_BP2+16] for cross25_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+16]);
654 printf("lfr_bp2[i*NB_BYTES_BP2+26] for cross25_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+26]);
655 #endif
656 // S34
657 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
658 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17] / aux;
659 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18] / aux;
660 lfr_bp2[i*NB_BYTES_BP2+17] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
661 lfr_bp2[i*NB_BYTES_BP2+27] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
662 #ifdef DEBUG_TCH
663 printf("lfr_bp2[i*NB_BYTES_BP2+17] for cross34_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+17]);
664 printf("lfr_bp2[i*NB_BYTES_BP2+27] for cross34_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+27]);
665 #endif
666 // S35
667 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
668 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19] / aux;
669 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20] / aux;
670 lfr_bp2[i*NB_BYTES_BP2+18] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
671 lfr_bp2[i*NB_BYTES_BP2+28] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
672 #ifdef DEBUG_TCH
673 printf("lfr_bp2[i*NB_BYTES_BP2+18] for cross35_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+18]);
674 printf("lfr_bp2[i*NB_BYTES_BP2+28] for cross35_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+28]);
675 #endif
676 // S45
677 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
678 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+22] / aux;
679 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+23] / aux;
680 lfr_bp2[i*NB_BYTES_BP2+19] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
681 lfr_bp2[i*NB_BYTES_BP2+29] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
682 #ifdef DEBUG_TCH
683 printf("lfr_bp2[i*NB_BYTES_BP2+19] for cross45_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+19]);
684 printf("lfr_bp2[i*NB_BYTES_BP2+29] for cross45_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+29]);
685 #endif
686 //==============================================
687 // BP2 auto correlations == PA_LFR_SC_BP2_AUTO_F0 == 5*16 bits = 5*[6 bits (exponent) + 10 bits (significand)]
688 // == PA_LFR_SC_BP2_AUTO_A0_F0 == 16 bits
689 // == PA_LFR_SC_BP2_AUTO_A1_F0 == 16 bits
690 // == PA_LFR_SC_BP2_AUTO_A2_F0 == 16 bits
691 // == PA_LFR_SC_BP2_AUTO_A3_F0 == 16 bits
692 // == PA_LFR_SC_BP2_AUTO_A4_F0 == 16 bits
693 // S11
694 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX], &exponent); // 0.5 <= significand < 1
695 // S11 = significand * 2^exponent
696 #ifdef DEBUG_TCH
697 printf("S11 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]);
698 printf("significand : %16.8e\n",significand);
699 printf("exponent : %d\n" ,exponent);
700 #endif
701 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
702 exponent = expmin;
703 significand = 0.5; // min value that can be recorded
704 }
705 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
706 exponent = expmax;
707 significand = 1.0; // max value that can be recorded
708 }
709 if (significand == 0) {// in that case exponent == 0 too
710 exponent = expmin;
711 significand = 0.5; // min value that can be recorded
712 }
713
714 autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
715 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
716 tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
717 // where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
718 pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+0]; // Affect an uint16_t pointer with the
719 // adress where the 16-bit word result will be stored
720 *pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
721 // left place of the significand bits (nbitsig), making
722 // the 16-bit word to be recorded, and record it using the pointer
723 #ifdef DEBUG_TCH
724 printf("autocor for S11 significand : %u\n",autocor );
725 printf("tmp_uint8 for S11 exponent : %u\n",tmp_uint16 );
726 printf("*pt_u_short_int for S11 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
727 printf("lfr_bp2[i*NB_BYTES_BP2+1] : %u or %x\n",lfr_bp2[i*NB_BYTES_BP2+1], lfr_bp2[i*NB_BYTES_BP2+1]);
728 printf("lfr_bp2[i*NB_BYTES_BP2+0] : %u or %x\n",lfr_bp2[i*NB_BYTES_BP2+0], lfr_bp2[i*NB_BYTES_BP2+0]);
729 #endif
730 // S22
731 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9], &exponent); // 0.5 <= significand < 1
732 // S22 = significand * 2^exponent
733 #ifdef DEBUG_TCH
734 printf("S22 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]);
735 printf("significand : %16.8e\n",significand);
736 printf("exponent : %d\n" ,exponent);
737 #endif
738 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
739 exponent = expmin;
740 significand = 0.5; // min value that can be recorded
741 }
742 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
743 exponent = expmax;
744 significand = 1.0; // max value that can be recorded
745 }
746 if (significand == 0) {// in that case exponent == 0 too
747 exponent = expmin;
748 significand = 0.5; // min value that can be recorded
749 }
750
751 autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
752 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
753 tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
754 // where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
755 pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+2]; // Affect an uint16_t pointer with the
756 // adress where the 16-bit word result will be stored
757 *pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
758 // left place of the significand bits (nbitsig), making
759 // the 16-bit word to be recorded, and record it using the pointer
760 #ifdef DEBUG_TCH
761 printf("autocor for S22 significand : %d\n",autocor );
762 printf("tmp_uint8 for S22 exponent : %d\n",tmp_uint16 );
763 printf("*pt_u_short_int for S22 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
764 printf("lfr_bp2[i*NB_BYTES_BP2+3] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+3], lfr_bp2[i*NB_BYTES_BP2+3]);
765 printf("lfr_bp2[i*NB_BYTES_BP2+2] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+2], lfr_bp2[i*NB_BYTES_BP2+2]);
766 #endif
767 // S33
768 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16], &exponent); // 0.5 <= significand < 1
769 // S33 = significand * 2^exponent
770 #ifdef DEBUG_TCH
771 printf("S33 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
772 printf("significand : %16.8e\n",significand);
773 printf("exponent : %d\n" ,exponent);
774 #endif
775 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
776 exponent = expmin;
777 significand = 0.5; // min value that can be recorded
778 }
779 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
780 exponent = expmax;
781 significand = 1.0; // max value that can be recorded
782 }
783 if (significand == 0) {// in that case exponent == 0 too
784 exponent = expmin;
785 significand = 0.5; // min value that can be recorded
786 }
787
788 autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
789 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
790 tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
791 // where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
792 pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+4]; // Affect an uint16_t pointer with the
793 // adress where the 16-bit word result will be stored
794 *pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
795 // left place of the significand bits (nbitsig), making
796 // the 16-bit word to be recorded, and record it using the pointer
797 #ifdef DEBUG_TCH
798 printf("autocor for S33 significand : %d\n",autocor );
799 printf("tmp_uint8 for S33 exponent : %d\n",tmp_uint16 );
800 printf("*pt_u_short_int for S33 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
801 printf("lfr_bp2[i*NB_BYTES_BP2+5] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+5], lfr_bp2[i*NB_BYTES_BP2+5]);
802 printf("lfr_bp2[i*NB_BYTES_BP2+4] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+4], lfr_bp2[i*NB_BYTES_BP2+4]);
803 #endif
804 // S44
805 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21], &exponent); // 0.5 <= significand < 1
806 // S44 = significand * 2^exponent
807 #ifdef DEBUG_TCH
808 printf("S44 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
809 printf("significand : %16.8e\n",significand);
810 printf("exponent : %d\n" ,exponent);
811 #endif
812
813 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
814 exponent = expmin;
815 significand = 0.5; // min value that can be recorded
816 }
817 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
818 exponent = expmax;
819 significand = 1.0; // max value that can be recorded
820 }
821 if (significand == 0) {// in that case exponent == 0 too
822 exponent = expmin;
823 significand = 0.5; // min value that can be recorded
824 }
825
826 autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
827 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
828 tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
829 // where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
830 pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+6]; // Affect an uint16_t pointer with the
831 // adress where the 16-bit word result will be stored
832 *pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
833 // left place of the significand bits (nbitsig), making
834 // the 16-bit word to be recorded, and record it using the pointer
835 #ifdef DEBUG_TCH
836 printf("autocor for S44 significand : %d\n",autocor );
837 printf("tmp_uint8 for S44 exponent : %d\n",tmp_uint16 );
838 printf("*pt_u_short_int for S44 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
839 printf("lfr_bp2[i*NB_BYTES_BP2+7] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+7], lfr_bp2[i*NB_BYTES_BP2+7]);
840 printf("lfr_bp2[i*NB_BYTES_BP2+6] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+6], lfr_bp2[i*NB_BYTES_BP2+6]);
841 #endif
842 // S55
843 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24], &exponent); // 0.5 <= significand < 1
844 // S55 = significand * 2^exponent
845 #ifdef DEBUG_TCH
846 printf("S55 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
847 printf("significand : %16.8e\n",significand);
848 printf("exponent : %d\n" ,exponent);
849 #endif
850 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
851 exponent = expmin;
852 significand = 0.5; // min value that can be recorded
853 }
854 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
855 exponent = expmax;
856 significand = 1.0; // max value that can be recorded
857 }
858 if (significand == 0) {// in that case exponent == 0 too
859 exponent = expmin;
860 significand = 0.5; // min value that can be recorded
861 }
862
863 autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
864 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
865 tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
866 // where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
867 pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+8]; // Affect an uint16_t pointer with the
868 // adress where the 16-bit word result will be stored
869 *pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
870 // left place of the significand bits (nbitsig), making
871 // the 16-bit word to be recorded, and record it using the pointer
872 #ifdef DEBUG_TCH
873 printf("autocor for S55 significand : %d\n",autocor );
874 printf("tmp_uint8 for S55 exponent : %d\n",tmp_uint16 );
875 printf("*pt_u_short_int for S55 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
876 printf("lfr_bp2[i*NB_BYTES_BP2+9] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+9], lfr_bp2[i*NB_BYTES_BP2+9]);
877 printf("lfr_bp2[i*NB_BYTES_BP2+8] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+8], lfr_bp2[i*NB_BYTES_BP2+8]);
878 #endif
879 }
880 }
881
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@@ -6,14 +6,846
6 6 #ifndef BASIC_PARAMETERS_H_INCLUDED
7 7 #define BASIC_PARAMETERS_H_INCLUDED
8 8
9 #include <math.h>
10 #include <stdio.h>
11 #include <stdint.h>
12
9 13 #define NB_VALUES_PER_SPECTRAL_MATRIX 25
10 14 #define NB_BINS_COMPRESSED_MATRIX_f0 1
11 15
12 16 #define NB_BYTES_BP1 9
13 17 #define NB_BYTES_BP2 30
14 18
19 #define K44_PE 0
20 #define K55_PE 1
21 #define K45_PE_RE 2
22 #define K45_PE_IM 3
23
24 #define K14_SX_RE 4
25 #define K14_SX_IM 5
26 #define K15_SX_RE 6
27 #define K15_SX_IM 7
28 #define K24_SX_RE 8
29 #define K24_SX_IM 9
30 #define K25_SX_RE 10
31 #define K25_SX_IM 11
32 #define K34_SX_RE 12
33 #define K34_SX_IM 13
34 #define K35_SX_RE 14
35 #define K35_SX_IM 15
36
37 #define K24_NY_RE 16
38 #define K24_NY_IM 17
39 #define K25_NY_RE 18
40 #define K25_NY_IM 19
41 #define K34_NY_RE 20
42 #define K34_NY_IM 21
43 #define K35_NY_RE 22
44 #define K35_NY_IM 23
45
46 #define K24_NZ_RE 24
47 #define K24_NZ_IM 25
48 #define K25_NZ_RE 26
49 #define K25_NZ_IM 27
50 #define K34_NZ_RE 28
51 #define K34_NZ_IM 29
52 #define K35_NZ_RE 30
53 #define K35_NZ_IM 31
54
55 float k_f0[NB_BINS_COMPRESSED_MATRIX_f0][32];
15 56 void init_k_f0( void );
16 void BP1_set(float * compressed_spec_mat, unsigned char nb_bins_compressed_spec_mat, unsigned char * lfr_bp1);
17 void BP2_set(float * compressed_spec_mat, unsigned char nb_bins_compressed_spec_mat, unsigned char * lfr_bp2);
57 static inline void BP1_set(float * compressed_spec_mat, unsigned char nb_bins_compressed_spec_mat, unsigned char * lfr_bp1);
58 static inline void BP2_set(float * compressed_spec_mat, unsigned char nb_bins_compressed_spec_mat, unsigned char * lfr_bp2);
59
60 void BP1_set( float * compressed_spec_mat, uint8_t nb_bins_compressed_spec_mat, uint8_t * lfr_bp1 ){
61 float alpha_M = 45 * (3.1415927/180);
62 int exponent; // 32 bits signed
63 float PSDB; // 32 bits floating point
64 float PSDE;
65 float tmp;
66 float NVEC_V0;
67 float NVEC_V1;
68 float NVEC_V2;
69 float aux;
70 float tr_SB_SB;
71 float e_cross_b_re;
72 float e_cross_b_im;
73 float n_cross_e_scal_b_re;
74 float n_cross_e_scal_b_im;
75 float ny;
76 float nz;
77 float bx_bx_star;
78 float vphi;
79 float significand;
80 uint8_t nbitexp; // 8 bits unsigned
81 uint8_t nbitsig;
82 uint8_t tmp_uint8;
83 uint8_t *pt_uint8; // pointer on unsigned 8-bit bytes
84 int8_t expmin; // 8 bits signed
85 int8_t expmax;
86 int16_t rangesig; // 16 bits unsigned
87 uint16_t psd;
88 uint16_t exp;
89 uint16_t tmp_uint16;
90 uint16_t i;
91
92 init_k_f0();
93
94 #ifdef DEBUG_TCH
95 printf("BP1 : \n");
96 printf("Number of bins: %d\n", nb_bins_compressed_spec_mat);
97 #endif
98
99 // initialization for managing the exponents of the floating point data:
100 nbitexp = 5; // number of bits for the exponent
101 expmax = 30; // maximum value of the exponent
102 expmin = expmax - (1 << nbitexp) + 1; // accordingly the minimum exponent value
103 // for floating point data to be recorded on 12-bit words:
104 nbitsig = 12 - nbitexp; // number of bits for the significand
105 rangesig = (1 << nbitsig)-1; // == 2^nbitsig - 1
106
107 #ifdef DEBUG_TCH
108 printf("nbitexp : %d, expmax : %d, expmin : %d\n", nbitexp, expmax, expmin);
109 printf("nbitsig : %d, rangesig : %d\n", nbitsig, rangesig);
110 #endif
111
112 for(i=0; i<nb_bins_compressed_spec_mat; i++){
113 //==============================================
114 // BP1 PSDB == PA_LFR_SC_BP1_PB_F0 == 12 bits = 5 bits (exponent) + 7 bits (significand)
115 PSDB = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX] // S11
116 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] // S22
117 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]; // S33
118
119 significand = frexpf(PSDB/3, &exponent); // 0.5 <= significand < 1
120 // PSDB/3 = significand * 2^exponent
121 // the division by 3 is to ensure that max value <= 2^30
122
123 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
124 exponent = expmin;
125 significand = 0.5; // min value that can be recorded
126 }
127 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
128 exponent = expmax;
129 significand = 1.0; // max value that can be recorded
130 }
131 if (significand == 0) {// in that case exponent == 0 too
132 exponent = expmin;
133 significand = 0.5; // min value that can be recorded
134 }
135
136 psd = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
137 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
138 exp = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int where just
139 // the first nbitexp bits are used (0, ..., 2^nbitexp-1)
140 tmp_uint16 = psd | (exp << nbitsig); // Put the exponent bits (nbitexp) next to the
141 // left place of the significand bits (nbitsig),
142 // making the 16-bit word to be recorded
143 pt_uint8 = (uint8_t*) &tmp_uint16; // Affect an uint8_t pointer with the adress of tmp_uint16
144 #ifdef LSB_FIRST_TCH
145 lfr_bp1[i*NB_BYTES_BP1+2] = pt_uint8[0]; // Record LSB of tmp_uint16
146 lfr_bp1[i*NB_BYTES_BP1+3] = pt_uint8[1]; // Record MSB of tmp_uint16
147 #endif
148 #ifdef MSB_FIRST_TCH
149 lfr_bp1[i*NB_BYTES_BP1+2] = pt_uint8[1]; // Record LSB of tmp_uint16
150 lfr_bp1[i*NB_BYTES_BP1+3] = pt_uint8[0]; // Record MSB of tmp_uint16
151 #endif
152 #ifdef DEBUG_TCH
153 printf("\nBin number: %d\n", i);
154 printf("PSDB / 3 : %16.8e\n",PSDB/3);
155 printf("significand : %16.8e\n",significand);
156 printf("exponent : %d\n" ,exponent);
157 printf("psd for PSDB significand : %d\n",psd);
158 printf("exp for PSDB exponent : %d\n",exp);
159 printf("pt_uint8[1] for PSDB exponent + significand: %.3d or %.2x\n",pt_uint8[1], pt_uint8[1]);
160 printf("pt_uint8[0] for PSDB exponent + significand: %.3d or %.2x\n",pt_uint8[0], pt_uint8[0]);
161 printf("lfr_bp1[i*NB_BYTES_BP1+3] : %.3d or %.2x\n",lfr_bp1[i*NB_BYTES_BP1+3], lfr_bp1[i*NB_BYTES_BP1+3]);
162 printf("lfr_bp1[i*NB_BYTES_BP1+2] : %.3d or %.2x\n",lfr_bp1[i*NB_BYTES_BP1+2], lfr_bp1[i*NB_BYTES_BP1+2]);
163 #endif
164 //==============================================
165 // BP1 PSDE == PA_LFR_SC_BP1_PE_F0 == 12 bits = 5 bits (exponent) + 7 bits (significand)
166 PSDE = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21] * k_f0[i][K44_PE] // S44
167 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24] * k_f0[i][K55_PE] // S55
168 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+22] * k_f0[i][K45_PE_RE] // S45 Re
169 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+23] * k_f0[i][K45_PE_IM]; // S45 Im
170
171 significand = frexpf(PSDE/2, &exponent); // 0.5 <= significand < 1
172 // PSDE/2 = significand * 2^exponent
173 // the division by 2 is to ensure that max value <= 2^30
174 // should be reconsidered by taking into account the k-coefficients ...
175
176 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
177 exponent = expmin;
178 significand = 0.5; // min value that can be recorded
179 }
180 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
181 exponent = expmax;
182 significand = 1.0; // max value that can be recorded
183 }
184 if (significand == 0) {// in that case exponent == 0 too
185 exponent = expmin;
186 significand = 0.5; // min value that can be recorded
187 }
188
189 psd = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
190 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
191 exp = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int where just
192 // the first nbitexp bits are used (0, ..., 2^nbitexp-1)
193 tmp_uint16 = psd | (exp << nbitsig); // Put the exponent bits (nbitexp) next to the
194 // left place of the significand bits (nbitsig),
195 // making the 16-bit word to be recorded
196 pt_uint8 = (uint8_t*) &tmp_uint16; // Affect an uint8_t pointer with the adress of tmp_uint16
197 #ifdef LSB_FIRST_TCH
198 lfr_bp1[i*NB_BYTES_BP1+0] = pt_uint8[0]; // Record LSB of tmp_uint16
199 lfr_bp1[i*NB_BYTES_BP1+1] = pt_uint8[1]; // Record MSB of tmp_uint16
200 #endif
201 #ifdef MSB_FIRST_TCH
202 lfr_bp1[i*NB_BYTES_BP1+0] = pt_uint8[1]; // Record LSB of tmp_uint16
203 lfr_bp1[i*NB_BYTES_BP1+1] = pt_uint8[0]; // Record MSB of tmp_uint16
204 #endif
205 #ifdef DEBUG_TCH
206 printf("Bin number: %d\n", i);
207 printf("PSDE/2 : %16.8e\n",PSDE/2);
208 printf("significand : %16.8e\n",significand);
209 printf("exponent : %d\n" ,exponent);
210 printf("psd for PSDE significand : %d\n",psd);
211 printf("exp for PSDE exponent : %d\n",exp);
212 printf("pt_uint8[1] for PSDE exponent + significand: %.3d or %.2x\n",pt_uint8[1], pt_uint8[1]);
213 printf("pt_uint8[0] for PSDE exponent + significand: %.3d or %.2x\n",pt_uint8[0], pt_uint8[0]);
214 printf("lfr_bp1[i*NB_BYTES_BP1+1] : %.3d or %.2x\n",lfr_bp1[i*NB_BYTES_BP1+1], lfr_bp1[i*NB_BYTES_BP1+1]);
215 printf("lfr_bp1[i*NB_BYTES_BP1+0] : %.3d or %.2x\n",lfr_bp1[i*NB_BYTES_BP1+0], lfr_bp1[i*NB_BYTES_BP1+0]);
216 #endif
217 //==============================================================================
218 // BP1 normal wave vector == PA_LFR_SC_BP1_NVEC_V0_F0 == 8 bits
219 // == PA_LFR_SC_BP1_NVEC_V1_F0 == 8 bits
220 // == PA_LFR_SC_BP1_NVEC_V2_F0 == 1 sign bit
221 tmp = sqrt( compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] //Im S12
222 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] //Im S13
223 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11] //Im S23
224 );
225 NVEC_V0 = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]/ tmp; // S23 Im => n1
226 NVEC_V1 = -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] / tmp; // S13 Im => n2
227 NVEC_V2 = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] / tmp; // S12 Im => n3
228
229 lfr_bp1[i*NB_BYTES_BP1+4] = (uint8_t) (NVEC_V0*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
230 lfr_bp1[i*NB_BYTES_BP1+5] = (uint8_t) (NVEC_V1*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
231 pt_uint8 = (uint8_t*) &NVEC_V2; // affect an uint8_t pointer with the adress of NVEC_V2
232 #ifdef LSB_FIRST_TCH
233 lfr_bp1[i*NB_BYTES_BP1+6] = pt_uint8[3] & 0x80; // extract the sign bit of NVEC_V2 (32-bit float, sign bit in the 4th octet:PC convention)
234 // record it at the 8th bit position (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
235 #endif
236 #ifdef MSB_FIRST_TCH
237 lfr_bp1[i*NB_BYTES_BP1+6] = pt_uint8[0] & 0x80; // extract the sign bit of NVEC_V2 (32-bit float, sign bit in the 0th octet:SPARC convention)
238 // record it at the 8th bit position (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
239 #endif
240 #ifdef DEBUG_TCH
241 printf("NVEC_V0 : %16.8e\n",NVEC_V0);
242 printf("NVEC_V1 : %16.8e\n",NVEC_V1);
243 printf("NVEC_V2 : %16.8e\n",NVEC_V2);
244 printf("lfr_bp1[i*NB_BYTES_BP1+4] for NVEC_V0 : %u\n",lfr_bp1[i*NB_BYTES_BP1+4]);
245 printf("lfr_bp1[i*NB_BYTES_BP1+5] for NVEC_V1 : %u\n",lfr_bp1[i*NB_BYTES_BP1+5]);
246 printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
247 #endif
248 //=======================================================
249 // BP1 ellipticity == PA_LFR_SC_BP1_ELLIP_F0 == 4 bits
250 aux = 2*tmp / PSDB; // compute the ellipticity
251
252 tmp_uint8 = (uint8_t) (aux*15 + 0.5); // shift and cast into a 8-bit uint8_t with rounding
253 // where just the first 4 bits are used (0, ..., 15)
254 lfr_bp1[i*NB_BYTES_BP1+6] = lfr_bp1[i*NB_BYTES_BP1+6] | (tmp_uint8 << 3); // put these 4 bits next to the right place
255 // of the sign bit of NVEC_V2 (recorded
256 // previously in lfr_bp1[i*NB_BYTES_BP1+6])
257 #ifdef DEBUG_TCH
258 printf("ellipticity : %16.8e\n",aux);
259 printf("tmp_uint8 for ellipticity : %u\n",tmp_uint8);
260 printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 + ellipticity : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
261 #endif
262 //==============================================================
263 // BP1 degree of polarization == PA_LFR_SC_BP1_DOP_F0 == 3 bits
264 tr_SB_SB = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]
265 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]
266 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]
267 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1]
268 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2]
269 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3]
270 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4]
271 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]
272 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11];
273 aux = PSDB*PSDB;
274 tmp = ( 3*tr_SB_SB - aux ) / ( 2 * aux ); // compute the degree of polarisation
275
276 tmp_uint8 = (uint8_t) (tmp*7 + 0.5);// shift and cast into a 8-bit uint8_t with rounding
277 // where just the first 3 bits are used (0, ..., 7)
278 lfr_bp1[i*NB_BYTES_BP1+6] = lfr_bp1[i*NB_BYTES_BP1+6] | tmp_uint8; // record these 3 bits at the 3 first bit positions
279 // (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
280 #ifdef DEBUG_TCH
281 printf("DOP : %16.8e\n",tmp);
282 printf("tmp_uint8 for DOP : %u\n",tmp_uint8);
283 printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 + ellipticity + DOP : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
284 #endif
285 //=======================================================================================
286 // BP1 X_SO-component of the Poynting flux == PA_LFR_SC_BP1_SX_F0 == 8 (+ 2) bits
287 // = 5 bits (exponent) + 3 bits (significand)
288 // + 1 sign bit + 1 argument bit (two sectors)
289 e_cross_b_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_SX_RE] //S34 Re
290 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_SX_RE] //S35 Re
291 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] *k_f0[i][K14_SX_RE] //S14 Re
292 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] *k_f0[i][K15_SX_RE] //S15 Re
293 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_SX_RE] //S24 Re
294 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_SX_RE] //S25 Re
295 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_SX_IM] //S34 Im
296 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_SX_IM] //S35 Im
297 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] *k_f0[i][K14_SX_IM] //S14 Im
298 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] *k_f0[i][K15_SX_IM] //S15 Im
299 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_SX_IM] //S24 Im
300 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_SX_IM]; //S25 Im
301 // Im(S_ji) = -Im(S_ij)
302 // k_ji = k_ij
303 e_cross_b_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_SX_IM] //S34 Re
304 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_SX_IM] //S35 Re
305 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] *k_f0[i][K14_SX_IM] //S14 Re
306 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] *k_f0[i][K15_SX_IM] //S15 Re
307 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_SX_IM] //S24 Re
308 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_SX_IM] //S25 Re
309 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_SX_RE] //S34 Im
310 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_SX_RE] //S35 Im
311 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] *k_f0[i][K14_SX_RE] //S14 Im
312 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] *k_f0[i][K15_SX_RE] //S15 Im
313 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_SX_RE] //S24 Im
314 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_SX_RE]; //S25 Im
315 #ifdef DEBUG_TCH
316 printf("ReaSX / 2 : %16.8e\n",e_cross_b_re/2);
317 #endif
318 pt_uint8 = (uint8_t*) &e_cross_b_re; // Affect an uint8_t pointer with the adress of e_cross_b_re
319 #ifdef LSB_FIRST_TCH
320 lfr_bp1[i*NB_BYTES_BP1+1] = lfr_bp1[i*NB_BYTES_BP1+1] | (pt_uint8[3] & 0x80); // Extract its sign bit (32-bit float, sign bit in the 4th octet:PC convention)
321 // Record it at the 8th bit position (from the right to the left)
322 // of lfr_bp1[i*NB_BYTES_BP1+1]
323 pt_uint8[3] = (pt_uint8[3] & 0x7f); // Make e_cross_b_re be positive in any case: |ReaSX|
324 #endif
325 #ifdef MSB_FIRST_TCH
326 lfr_bp1[i*NB_BYTES_BP1+1] = lfr_bp1[i*NB_BYTES_BP1+1] | (pt_uint8[0] & 0x80); // Extract its sign bit (32-bit float, sign bit in the 0th octet:SPARC convention)
327 // Record it at the 8th bit position (from the right to the left)
328 // of lfr_bp1[i*NB_BYTES_BP1+1]
329 pt_uint8[0] = (pt_uint8[0] & 0x7f); // Make e_cross_b_re be positive in any case: |ReaSX|
330 #endif
331 significand = frexpf(e_cross_b_re/2, &exponent);// 0.5 <= significand < 1
332 // ReaSX/2 = significand * 2^exponent
333 // The division by 2 is to ensure that max value <= 2^30 (rough estimate)
334 // Should be reconsidered by taking into account the k-coefficients ...
335
336 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
337 exponent = expmin;
338 significand = 0.5; // min value that can be recorded
339 }
340 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
341 exponent = expmax;
342 significand = 1.0; // max value that can be recorded
343 }
344 if (significand == 0) {// in that case exponent == 0 too
345 exponent = expmin;
346 significand = 0.5; // min value that can be recorded
347 }
348
349 lfr_bp1[i*NB_BYTES_BP1+7] = (uint8_t) ((significand*2-1)*7 + 0.5); // Shift and cast into a 8-bit uint8_t with rounding
350 // where just the first 3 bits are used (0, ..., 7)
351 tmp_uint8 = (uint8_t) (exponent-expmin); // Shift and cast into a 8-bit uint8_t where
352 // just the first 5 bits are used (0, ..., 2^5-1)
353 #ifdef DEBUG_TCH
354 printf("|ReaSX| / 2 : %16.8e\n",e_cross_b_re/2);
355 printf("significand : %16.8e\n",significand);
356 printf("exponent : %d\n" ,exponent);
357 printf("lfr_bp1[i*NB_BYTES_BP1+7] for ReaSX significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+7]);
358 printf("tmp_uint8 for ReaSX exponent : %d\n",tmp_uint8);
359 #endif
360 lfr_bp1[i*NB_BYTES_BP1+7] = lfr_bp1[i*NB_BYTES_BP1+7] | (tmp_uint8 << 3); // shift these 5 bits to the left before logical addition
361 // with lfr_bp1[i*NB_BYTES_BP1+7]
362 #ifdef DEBUG_TCH
363 printf("lfr_bp1[i*NB_BYTES_BP1+7] for ReaSX exponent + significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+7]);
364 printf("lfr_bp1[i*NB_BYTES_BP1+1] for ReaSX sign + PSDE 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+1]);
365 printf("ImaSX / 2 : %16.8e\n",e_cross_b_im/2);
366 #endif
367 pt_uint8 = (uint8_t*) &e_cross_b_im; // Affect an uint8_t pointer with the adress of e_cross_b_im
368 #ifdef LSB_FIRST_TCH
369 pt_uint8[3] = pt_uint8[3] & 0x7f; // Make e_cross_b_im be positive in any case: |ImaSX|
370 #endif
371 #ifdef MSB_FIRST_TCH
372 pt_uint8[0] = pt_uint8[0] & 0x7f; // Make e_cross_b_im be positive in any case: |ImaSX|
373 #endif
374 tmp_uint8 = (e_cross_b_im > e_cross_b_re) ? 0x40 : 0x00; // Determine the sector argument of SX. If |Im| > |Re| affect
375 // an unsigned 8-bit char with 01000000; otherwise with null.
376 lfr_bp1[i*NB_BYTES_BP1+1] = lfr_bp1[i*NB_BYTES_BP1+1] | tmp_uint8; // Record it as a sign bit at the 7th bit position (from the right
377 // to the left) of lfr_bp1[i*NB_BYTES_BP1+1], by simple logical addition.
378 #ifdef DEBUG_TCH
379 printf("|ImaSX| / 2 : %16.8e\n",e_cross_b_im/2);
380 printf("ArgSX sign : %u\n",tmp_uint8);
381 printf("lfr_bp1[i*NB_BYTES_BP1+1] for ReaSX & ArgSX signs + PSDE 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+1]);
382 #endif
383 //======================================================================
384 // BP1 phase velocity estimator == PA_LFR_SC_BP1_VPHI_F0 == 8 (+ 2) bits
385 // = 5 bits (exponent) + 3 bits (significand)
386 // + 1 sign bit + 1 argument bit (two sectors)
387 ny = sin(alpha_M)*NVEC_V1 + cos(alpha_M)*NVEC_V2;
388 nz = NVEC_V0;
389 bx_bx_star = cos(alpha_M)*cos(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] // S22 Re
390 + sin(alpha_M)*sin(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16] // S33 Re
391 - 2*sin(alpha_M)*cos(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]; // S23 Re
392
393 n_cross_e_scal_b_re = ny * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NY_RE] //S24 Re
394 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NY_RE] //S25 Re
395 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NY_RE] //S34 Re
396 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NY_RE] //S35 Re
397 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NY_IM] //S24 Im
398 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NY_IM] //S25 Im
399 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NY_IM] //S34 Im
400 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NY_IM]) //S35 Im
401 + nz * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NZ_RE] //S24 Re
402 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NZ_RE] //S25 Re
403 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NZ_RE] //S34 Re
404 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NZ_RE] //S35 Re
405 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NZ_IM] //S24 Im
406 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NZ_IM] //S25 Im
407 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NZ_IM] //S34 Im
408 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NZ_IM]);//S35 Im
409 // Im(S_ji) = -Im(S_ij)
410 // k_ji = k_ij
411 n_cross_e_scal_b_im = ny * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NY_IM] //S24 Re
412 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NY_IM] //S25 Re
413 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NY_IM] //S34 Re
414 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NY_IM] //S35 Re
415 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NY_RE] //S24 Im
416 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NY_RE] //S25 Im
417 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NY_RE] //S34 Im
418 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NY_RE]) //S35 Im
419 + nz * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NZ_IM] //S24 Re
420 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NZ_IM] //S25 Re
421 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NZ_IM] //S34 Re
422 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NZ_IM] //S35 Re
423 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NZ_RE] //S24 Im
424 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NZ_RE] //S25 Im
425 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NZ_RE] //S34 Im
426 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NZ_RE]);//S35 Im
427 #ifdef DEBUG_TCH
428 printf("n_cross_e_scal_b_re : %16.8e\n",n_cross_e_scal_b_re);
429 printf("n_cross_e_scal_b_im : %16.8e\n",n_cross_e_scal_b_im);
430 #endif
431 // vphi = n_cross_e_scal_b_re / bx_bx_star => sign(VPHI) = sign(n_cross_e_scal_b_re)
432 pt_uint8 = (uint8_t*) &n_cross_e_scal_b_re; // Affect an uint8_t pointer with the adress of n_cross_e_scal_b_re
433 #ifdef LSB_FIRST_TCH
434 lfr_bp1[i*NB_BYTES_BP1+3] = lfr_bp1[i*NB_BYTES_BP1+3] | (pt_uint8[3] & 0x80); // Extract its sign bit (32-bit float, sign bit in the 4th octet:PC convention)
435 // Record it at the 8th bit position (from the right to the left)
436 // of lfr_bp1[i*NB_BYTES_BP1+3]
437 pt_uint8[3] = (pt_uint8[3] & 0x7f); // Make n_cross_e_scal_b_re be positive in any case: |n_cross_e_scal_b_re|
438 #endif
439 #ifdef MSB_FIRST_TCH
440 lfr_bp1[i*NB_BYTES_BP1+3] = lfr_bp1[i*NB_BYTES_BP1+3] | (pt_uint8[0] & 0x80); // Extract its sign bit (32-bit float, sign bit in the 0th octet:SPARC convention)
441 // Record it at the 8th bit position (from the right to the left)
442 // of lfr_bp1[i*NB_BYTES_BP1+3]
443 pt_uint8[0] = (pt_uint8[0] & 0x7f); // Make n_cross_e_scal_b_re be positive in any case: |n_cross_e_scal_b_re|
444 #endif
445 vphi = n_cross_e_scal_b_re / bx_bx_star; // Compute |VPHI|
446
447 significand = frexpf(vphi/2, &exponent); // 0.5 <= significand < 1
448 // vphi/2 = significand * 2^exponent
449 // The division by 2 is to ensure that max value <= 2^30 (rough estimate)
450 // Should be reconsidered by taking into account the k-coefficients ...
451
452 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
453 exponent = expmin;
454 significand = 0.5; // min value that can be recorded
455 }
456 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
457 exponent = expmax;
458 significand = 1.0; // max value that can be recorded
459 }
460 if (significand == 0) {// in that case exponent == 0 too
461 exponent = expmin;
462 significand = 0.5; // min value that can be recorded
463 }
464 #ifdef DEBUG_TCH
465 printf("|VPHI| / 2 : %16.8e\n",vphi/2);
466 printf("significand : %16.8e\n",significand);
467 printf("exponent : %d\n" ,exponent);
468 #endif
469 lfr_bp1[i*NB_BYTES_BP1+8] = (uint8_t) ((significand*2-1)*7 + 0.5); // Shift and cast into a 8-bit uint8_t with rounding
470 // where just the first 3 bits are used (0, ..., 7)
471 tmp_uint8 = (uint8_t) (exponent-expmin); // Shift and cast into a 8-bit uint8_t where
472 // just the first 5 bits are used (0, ..., 2^5-1)
473 #ifdef DEBUG_TCH
474 printf("lfr_bp1[i*NB_BYTES_BP1+8] for VPHI significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+8]);
475 printf("tmp_uint8 for VPHI exponent : %d\n",tmp_uint8);
476 #endif
477 lfr_bp1[i*NB_BYTES_BP1+8] = lfr_bp1[i*NB_BYTES_BP1+8] | (tmp_uint8 << 3); // shift these 5 bits to the left before logical addition
478 // with lfr_bp1[i*NB_BYTES_BP1+8]
479 #ifdef DEBUG_TCH
480 printf("lfr_bp1[i*NB_BYTES_BP1+8] for VPHI exponent + significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+8]);
481 printf("lfr_bp1[i*NB_BYTES_BP1+3] for VPHI sign + PSDB 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+3]);
482 #endif
483 pt_uint8 = (uint8_t*) &n_cross_e_scal_b_im; // Affect an uint8_t pointer with the adress of n_cross_e_scal_b_im
484 #ifdef LSB_FIRST_TCH
485 pt_uint8[3] = pt_uint8[3] & 0x7f; // Make n_cross_e_scal_b_im be positive in any case: |ImaSX|
486 #endif
487 #ifdef MSB_FIRST_TCH
488 pt_uint8[0] = pt_uint8[0] & 0x7f; // Make n_cross_e_scal_b_im be positive in any case: |ImaSX|
489 #endif
490 tmp_uint8 = (n_cross_e_scal_b_im > n_cross_e_scal_b_re) ? 0x40 : 0x00; // Determine the sector argument of SX. If |Im| > |Re| affect
491 // an unsigned 8-bit char with 01000000; otherwise with null.
492 lfr_bp1[i*NB_BYTES_BP1+3] = lfr_bp1[i*NB_BYTES_BP1+3] | tmp_uint8; // Record it as a sign bit at the 7th bit position (from the right
493 // to the left) of lfr_bp1[i*NB_BYTES_BP1+3], by simple logical addition.
494 #ifdef DEBUG_TCH
495 printf("|n_cross_e_scal_b_im| : %16.8e\n",n_cross_e_scal_b_im);
496 printf("|n_cross_e_scal_b_im|/bx_bx_star/2: %16.8e\n",n_cross_e_scal_b_im/bx_bx_star/2);
497 printf("ArgNEBX sign : %u\n",tmp_uint8);
498 printf("lfr_bp1[i*NB_BYTES_BP1+3] for VPHI & ArgNEBX signs + PSDB 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+3]);
499 #endif
500 }
501 }
502
503 void BP2_set( float * compressed_spec_mat, uint8_t nb_bins_compressed_spec_mat, uint8_t * lfr_bp2 )
504 {
505 int i, exponent;
506 float aux, significand, cross_re, cross_im;
507 int8_t nbitexp, nbitsig, expmin, expmax; // 8 bits
508 int16_t rangesig; // 16 bits
509 uint16_t autocor, tmp_uint16; // 16 bits
510 uint16_t *pt_u_short_int; // pointer on unsigned 16-bit words
511
512 #ifdef DEBUG_TCH
513 printf("BP2 : \n");
514 printf("Number of bins: %d\n", nb_bins_compressed_spec_mat);
515 #endif
516
517 // For floating point data to be recorded on 16-bit words :
518 nbitexp = 6; // number of bits for the exponent
519 nbitsig = 16 - nbitexp; // number of bits for the significand
520 rangesig = (1 << nbitsig)-1; // == 2^nbitsig - 1
521 expmax = 32;
522 expmin = expmax - (1 << nbitexp) + 1;
523
524 #ifdef DEBUG_TCH
525 printf("nbitexp : %d, nbitsig : %d, rangesig : %d\n", nbitexp, nbitsig, rangesig);
526 printf("expmin : %d, expmax : %d\n", expmin, expmax);
527 #endif
528
529 for(i = 0; i<nb_bins_compressed_spec_mat; i++){
530 //==============================================
531 // BP2 normalized cross correlations == PA_LFR_SC_BP2_CROSS_F0 == 10 * (8+8) bits
532 // == PA_LFR_SC_BP2_CROSS_RE_0_F0 == 8 bits
533 // == PA_LFR_SC_BP2_CROSS_IM_0_F0 == 8 bits
534 // == PA_LFR_SC_BP2_CROSS_RE_1_F0 == 8 bits
535 // == PA_LFR_SC_BP2_CROSS_IM_1_F0 == 8 bits
536 // == PA_LFR_SC_BP2_CROSS_RE_2_F0 == 8 bits
537 // == PA_LFR_SC_BP2_CROSS_IM_2_F0 == 8 bits
538 // == PA_LFR_SC_BP2_CROSS_RE_3_F0 == 8 bits
539 // == PA_LFR_SC_BP2_CROSS_IM_3_F0 == 8 bits
540 // == PA_LFR_SC_BP2_CROSS_RE_4_F0 == 8 bits
541 // == PA_LFR_SC_BP2_CROSS_IM_4_F0 == 8 bits
542 // == PA_LFR_SC_BP2_CROSS_RE_5_F0 == 8 bits
543 // == PA_LFR_SC_BP2_CROSS_IM_5_F0 == 8 bits
544 // == PA_LFR_SC_BP2_CROSS_RE_6_F0 == 8 bits
545 // == PA_LFR_SC_BP2_CROSS_IM_6_F0 == 8 bits
546 // == PA_LFR_SC_BP2_CROSS_RE_7_F0 == 8 bits
547 // == PA_LFR_SC_BP2_CROSS_IM_7_F0 == 8 bits
548 // == PA_LFR_SC_BP2_CROSS_RE_8_F0 == 8 bits
549 // == PA_LFR_SC_BP2_CROSS_IM_8_F0 == 8 bits
550 // == PA_LFR_SC_BP2_CROSS_RE_9_F0 == 8 bits
551 // == PA_LFR_SC_BP2_CROSS_IM_9_F0 == 8 bits
552 // S12
553 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]);
554 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1] / aux;
555 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] / aux;
556 lfr_bp2[i*NB_BYTES_BP2+10] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
557 lfr_bp2[i*NB_BYTES_BP2+20] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
558 #ifdef DEBUG_TCH
559 printf("\nBin number: %d\n", i);
560 printf("lfr_bp2[i*NB_BYTES_BP2+10] for cross12_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+10]);
561 printf("lfr_bp2[i*NB_BYTES_BP2+20] for cross12_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+20]);
562 #endif
563 // S13
564 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
565 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3] / aux;
566 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] / aux;
567 lfr_bp2[i*NB_BYTES_BP2+11] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
568 lfr_bp2[i*NB_BYTES_BP2+21] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
569 #ifdef DEBUG_TCH
570 printf("lfr_bp2[i*NB_BYTES_BP2+11] for cross13_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+11]);
571 printf("lfr_bp2[i*NB_BYTES_BP2+21] for cross13_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+21]);
572 #endif
573 // S14
574 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
575 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] / aux;
576 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] / aux;
577 lfr_bp2[i*NB_BYTES_BP2+12] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
578 lfr_bp2[i*NB_BYTES_BP2+22] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
579 #ifdef DEBUG_TCH
580 printf("lfr_bp2[i*NB_BYTES_BP2+12] for cross14_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+12]);
581 printf("lfr_bp2[i*NB_BYTES_BP2+22] for cross14_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+22]);
582 #endif
583 // S15
584 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
585 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] / aux;
586 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] / aux;
587 lfr_bp2[i*NB_BYTES_BP2+13] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
588 lfr_bp2[i*NB_BYTES_BP2+23] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
589 #ifdef DEBUG_TCH
590 printf("lfr_bp2[i*NB_BYTES_BP2+13] for cross15_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+13]);
591 printf("lfr_bp2[i*NB_BYTES_BP2+23] for cross15_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+23]);
592 #endif
593 // S23
594 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
595 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10] / aux;
596 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11] / aux;
597 lfr_bp2[i*NB_BYTES_BP2+14] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
598 lfr_bp2[i*NB_BYTES_BP2+24] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
599 #ifdef DEBUG_TCH
600 printf("lfr_bp2[i*NB_BYTES_BP2+14] for cross23_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+14]);
601 printf("lfr_bp2[i*NB_BYTES_BP2+24] for cross23_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+24]);
602 #endif
603 // S24
604 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
605 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12] / aux;
606 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13] / aux;
607 lfr_bp2[i*NB_BYTES_BP2+15] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
608 lfr_bp2[i*NB_BYTES_BP2+25] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
609 #ifdef DEBUG_TCH
610 printf("lfr_bp2[i*NB_BYTES_BP2+15] for cross24_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+15]);
611 printf("lfr_bp2[i*NB_BYTES_BP2+25] for cross24_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+25]);
612 #endif
613 // S25
614 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
615 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14] / aux;
616 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15] / aux;
617 lfr_bp2[i*NB_BYTES_BP2+16] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
618 lfr_bp2[i*NB_BYTES_BP2+26] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
619 #ifdef DEBUG_TCH
620 printf("lfr_bp2[i*NB_BYTES_BP2+16] for cross25_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+16]);
621 printf("lfr_bp2[i*NB_BYTES_BP2+26] for cross25_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+26]);
622 #endif
623 // S34
624 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
625 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17] / aux;
626 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18] / aux;
627 lfr_bp2[i*NB_BYTES_BP2+17] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
628 lfr_bp2[i*NB_BYTES_BP2+27] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
629 #ifdef DEBUG_TCH
630 printf("lfr_bp2[i*NB_BYTES_BP2+17] for cross34_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+17]);
631 printf("lfr_bp2[i*NB_BYTES_BP2+27] for cross34_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+27]);
632 #endif
633 // S35
634 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
635 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19] / aux;
636 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20] / aux;
637 lfr_bp2[i*NB_BYTES_BP2+18] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
638 lfr_bp2[i*NB_BYTES_BP2+28] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
639 #ifdef DEBUG_TCH
640 printf("lfr_bp2[i*NB_BYTES_BP2+18] for cross35_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+18]);
641 printf("lfr_bp2[i*NB_BYTES_BP2+28] for cross35_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+28]);
642 #endif
643 // S45
644 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
645 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+22] / aux;
646 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+23] / aux;
647 lfr_bp2[i*NB_BYTES_BP2+19] = (uint8_t) (cross_re*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
648 lfr_bp2[i*NB_BYTES_BP2+29] = (uint8_t) (cross_im*127.5 + 128); // shift and cast into a 8-bit uint8_t (0, ..., 255) with rounding
649 #ifdef DEBUG_TCH
650 printf("lfr_bp2[i*NB_BYTES_BP2+19] for cross45_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+19]);
651 printf("lfr_bp2[i*NB_BYTES_BP2+29] for cross45_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+29]);
652 #endif
653 //==============================================
654 // BP2 auto correlations == PA_LFR_SC_BP2_AUTO_F0 == 5*16 bits = 5*[6 bits (exponent) + 10 bits (significand)]
655 // == PA_LFR_SC_BP2_AUTO_A0_F0 == 16 bits
656 // == PA_LFR_SC_BP2_AUTO_A1_F0 == 16 bits
657 // == PA_LFR_SC_BP2_AUTO_A2_F0 == 16 bits
658 // == PA_LFR_SC_BP2_AUTO_A3_F0 == 16 bits
659 // == PA_LFR_SC_BP2_AUTO_A4_F0 == 16 bits
660 // S11
661 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX], &exponent); // 0.5 <= significand < 1
662 // S11 = significand * 2^exponent
663 #ifdef DEBUG_TCH
664 printf("S11 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]);
665 printf("significand : %16.8e\n",significand);
666 printf("exponent : %d\n" ,exponent);
667 #endif
668 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
669 exponent = expmin;
670 significand = 0.5; // min value that can be recorded
671 }
672 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
673 exponent = expmax;
674 significand = 1.0; // max value that can be recorded
675 }
676 if (significand == 0) {// in that case exponent == 0 too
677 exponent = expmin;
678 significand = 0.5; // min value that can be recorded
679 }
680
681 autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
682 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
683 tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
684 // where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
685 pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+0]; // Affect an uint16_t pointer with the
686 // adress where the 16-bit word result will be stored
687 *pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
688 // left place of the significand bits (nbitsig), making
689 // the 16-bit word to be recorded, and record it using the pointer
690 #ifdef DEBUG_TCH
691 printf("autocor for S11 significand : %u\n",autocor );
692 printf("tmp_uint8 for S11 exponent : %u\n",tmp_uint16 );
693 printf("*pt_u_short_int for S11 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
694 printf("lfr_bp2[i*NB_BYTES_BP2+1] : %u or %x\n",lfr_bp2[i*NB_BYTES_BP2+1], lfr_bp2[i*NB_BYTES_BP2+1]);
695 printf("lfr_bp2[i*NB_BYTES_BP2+0] : %u or %x\n",lfr_bp2[i*NB_BYTES_BP2+0], lfr_bp2[i*NB_BYTES_BP2+0]);
696 #endif
697 // S22
698 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9], &exponent); // 0.5 <= significand < 1
699 // S22 = significand * 2^exponent
700 #ifdef DEBUG_TCH
701 printf("S22 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]);
702 printf("significand : %16.8e\n",significand);
703 printf("exponent : %d\n" ,exponent);
704 #endif
705 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
706 exponent = expmin;
707 significand = 0.5; // min value that can be recorded
708 }
709 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
710 exponent = expmax;
711 significand = 1.0; // max value that can be recorded
712 }
713 if (significand == 0) {// in that case exponent == 0 too
714 exponent = expmin;
715 significand = 0.5; // min value that can be recorded
716 }
717
718 autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
719 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
720 tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
721 // where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
722 pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+2]; // Affect an uint16_t pointer with the
723 // adress where the 16-bit word result will be stored
724 *pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
725 // left place of the significand bits (nbitsig), making
726 // the 16-bit word to be recorded, and record it using the pointer
727 #ifdef DEBUG_TCH
728 printf("autocor for S22 significand : %d\n",autocor );
729 printf("tmp_uint8 for S22 exponent : %d\n",tmp_uint16 );
730 printf("*pt_u_short_int for S22 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
731 printf("lfr_bp2[i*NB_BYTES_BP2+3] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+3], lfr_bp2[i*NB_BYTES_BP2+3]);
732 printf("lfr_bp2[i*NB_BYTES_BP2+2] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+2], lfr_bp2[i*NB_BYTES_BP2+2]);
733 #endif
734 // S33
735 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16], &exponent); // 0.5 <= significand < 1
736 // S33 = significand * 2^exponent
737 #ifdef DEBUG_TCH
738 printf("S33 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
739 printf("significand : %16.8e\n",significand);
740 printf("exponent : %d\n" ,exponent);
741 #endif
742 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
743 exponent = expmin;
744 significand = 0.5; // min value that can be recorded
745 }
746 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
747 exponent = expmax;
748 significand = 1.0; // max value that can be recorded
749 }
750 if (significand == 0) {// in that case exponent == 0 too
751 exponent = expmin;
752 significand = 0.5; // min value that can be recorded
753 }
754
755 autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
756 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
757 tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
758 // where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
759 pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+4]; // Affect an uint16_t pointer with the
760 // adress where the 16-bit word result will be stored
761 *pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
762 // left place of the significand bits (nbitsig), making
763 // the 16-bit word to be recorded, and record it using the pointer
764 #ifdef DEBUG_TCH
765 printf("autocor for S33 significand : %d\n",autocor );
766 printf("tmp_uint8 for S33 exponent : %d\n",tmp_uint16 );
767 printf("*pt_u_short_int for S33 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
768 printf("lfr_bp2[i*NB_BYTES_BP2+5] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+5], lfr_bp2[i*NB_BYTES_BP2+5]);
769 printf("lfr_bp2[i*NB_BYTES_BP2+4] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+4], lfr_bp2[i*NB_BYTES_BP2+4]);
770 #endif
771 // S44
772 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21], &exponent); // 0.5 <= significand < 1
773 // S44 = significand * 2^exponent
774 #ifdef DEBUG_TCH
775 printf("S44 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
776 printf("significand : %16.8e\n",significand);
777 printf("exponent : %d\n" ,exponent);
778 #endif
779
780 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
781 exponent = expmin;
782 significand = 0.5; // min value that can be recorded
783 }
784 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
785 exponent = expmax;
786 significand = 1.0; // max value that can be recorded
787 }
788 if (significand == 0) {// in that case exponent == 0 too
789 exponent = expmin;
790 significand = 0.5; // min value that can be recorded
791 }
792
793 autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
794 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
795 tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
796 // where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
797 pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+6]; // Affect an uint16_t pointer with the
798 // adress where the 16-bit word result will be stored
799 *pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
800 // left place of the significand bits (nbitsig), making
801 // the 16-bit word to be recorded, and record it using the pointer
802 #ifdef DEBUG_TCH
803 printf("autocor for S44 significand : %d\n",autocor );
804 printf("tmp_uint8 for S44 exponent : %d\n",tmp_uint16 );
805 printf("*pt_u_short_int for S44 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
806 printf("lfr_bp2[i*NB_BYTES_BP2+7] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+7], lfr_bp2[i*NB_BYTES_BP2+7]);
807 printf("lfr_bp2[i*NB_BYTES_BP2+6] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+6], lfr_bp2[i*NB_BYTES_BP2+6]);
808 #endif
809 // S55
810 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24], &exponent); // 0.5 <= significand < 1
811 // S55 = significand * 2^exponent
812 #ifdef DEBUG_TCH
813 printf("S55 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
814 printf("significand : %16.8e\n",significand);
815 printf("exponent : %d\n" ,exponent);
816 #endif
817 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
818 exponent = expmin;
819 significand = 0.5; // min value that can be recorded
820 }
821 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
822 exponent = expmax;
823 significand = 1.0; // max value that can be recorded
824 }
825 if (significand == 0) {// in that case exponent == 0 too
826 exponent = expmin;
827 significand = 0.5; // min value that can be recorded
828 }
829
830 autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
831 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
832 tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
833 // where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
834 pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+8]; // Affect an uint16_t pointer with the
835 // adress where the 16-bit word result will be stored
836 *pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
837 // left place of the significand bits (nbitsig), making
838 // the 16-bit word to be recorded, and record it using the pointer
839 #ifdef DEBUG_TCH
840 printf("autocor for S55 significand : %d\n",autocor );
841 printf("tmp_uint8 for S55 exponent : %d\n",tmp_uint16 );
842 printf("*pt_u_short_int for S55 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
843 printf("lfr_bp2[i*NB_BYTES_BP2+9] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+9], lfr_bp2[i*NB_BYTES_BP2+9]);
844 printf("lfr_bp2[i*NB_BYTES_BP2+8] : %.3d or %x\n",lfr_bp2[i*NB_BYTES_BP2+8], lfr_bp2[i*NB_BYTES_BP2+8]);
845 #endif
846 }
847 }
848
849
18 850
19 851 #endif // BASIC_PARAMETERS_H_INCLUDED
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