##// END OF EJS Templates
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r11:163519b5356a TCH
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1 #ifndef BASIC_PARAMETERS_PARAMS_H
2 #define BASIC_PARAMETERS_PARAMS_H
3
4 #define NB_VALUES_PER_SPECTRAL_MATRIX 25
5 #define NB_BINS_COMPRESSED_MATRIX_f0 11
6
7 #define NB_BYTES_BP1 9
8 #define NB_BYTES_BP2 30
9
10 //**
11 // K
12 #define K44_PE 0
13 #define K55_PE 1
14 #define K45_PE_RE 2
15 #define K45_PE_IM 3
16
17 #define K14_SX_RE 4
18 #define K14_SX_IM 5
19 #define K15_SX_RE 6
20 #define K15_SX_IM 7
21 #define K24_SX_RE 8
22 #define K24_SX_IM 9
23 #define K25_SX_RE 10
24 #define K25_SX_IM 11
25 #define K34_SX_RE 12
26 #define K34_SX_IM 13
27 #define K35_SX_RE 14
28 #define K35_SX_IM 15
29
30 #define K24_NY_RE 16
31 #define K24_NY_IM 17
32 #define K25_NY_RE 18
33 #define K25_NY_IM 19
34 #define K34_NY_RE 20
35 #define K34_NY_IM 21
36 #define K35_NY_RE 22
37 #define K35_NY_IM 23
38
39 #define K24_NZ_RE 24
40 #define K24_NZ_IM 25
41 #define K25_NZ_RE 26
42 #define K25_NZ_IM 27
43 #define K34_NZ_RE 28
44 #define K34_NZ_IM 29
45 #define K35_NZ_RE 30
46 #define K35_NZ_IM 31
47
48 #endif // BASIC_PARAMETERS_PARAMS_H
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@@ -5,47 +5,6
5 // version 1.3: 02/05/2014
5 // version 1.3: 02/05/2014
6
6
7 #include "basic_parameters.h"
7 #include "basic_parameters.h"
8 #include <math.h>
9 #include <stdio.h>
10 #include <stdint.h>
11
12 #define K44_PE 0
13 #define K55_PE 1
14 #define K45_PE_RE 2
15 #define K45_PE_IM 3
16
17 #define K14_SX_RE 4
18 #define K14_SX_IM 5
19 #define K15_SX_RE 6
20 #define K15_SX_IM 7
21 #define K24_SX_RE 8
22 #define K24_SX_IM 9
23 #define K25_SX_RE 10
24 #define K25_SX_IM 11
25 #define K34_SX_RE 12
26 #define K34_SX_IM 13
27 #define K35_SX_RE 14
28 #define K35_SX_IM 15
29
30 #define K24_NY_RE 16
31 #define K24_NY_IM 17
32 #define K25_NY_RE 18
33 #define K25_NY_IM 19
34 #define K34_NY_RE 20
35 #define K34_NY_IM 21
36 #define K35_NY_RE 22
37 #define K35_NY_IM 23
38
39 #define K24_NZ_RE 24
40 #define K24_NZ_IM 25
41 #define K25_NZ_RE 26
42 #define K25_NZ_IM 27
43 #define K34_NZ_RE 28
44 #define K34_NZ_IM 29
45 #define K35_NZ_RE 30
46 #define K35_NZ_IM 31
47
48 float k_f0[NB_BINS_COMPRESSED_MATRIX_f0][32];
49
8
50 void init_k_f0( void )
9 void init_k_f0( void )
51 {
10 {
@@ -90,842 +49,3 void init_k_f0( void )
90 }
49 }
91 }
50 }
92
51
93 float alpha_M = 45 * (3.1415927/180);
94
95 void BP1_set( float * compressed_spec_mat, uint8_t nb_bins_compressed_spec_mat, uint8_t * lfr_bp1 ){
96 float PSDB; // 32-bit 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 int exponent; // 32-bit signed integer
114 uint8_t nbitexp; // 8-bit unsigned integer
115 uint8_t nbitsig;
116 uint8_t tmp_uint8;
117 uint8_t *pt_uint8; // pointer on unsigned 8-bit integer
118 int8_t expmin; // 8-bit signed integer
119 int8_t expmax;
120 uint16_t rangesig; // 16-bit unsigned integer
121 uint16_t psd;
122 uint16_t exp;
123 uint16_t tmp_uint16;
124 uint16_t i;
125
126 init_k_f0();
127
128 #ifdef DEBUG_TCH
129 printf("BP1 : \n");
130 printf("Number of bins: %d\n", nb_bins_compressed_spec_mat);
131 #endif
132
133 // initialization for managing the exponents of the floating point data:
134 nbitexp = 5; // number of bits for the exponent
135 expmax = 30; // maximum value of the exponent
136 expmin = expmax - (1 << nbitexp) + 1; // accordingly the minimum exponent value
137 // for floating point data to be recorded on 12-bit words:
138 nbitsig = 12 - nbitexp; // number of bits for the significand
139 rangesig = (1 << nbitsig)-1; // == 2^nbitsig - 1
140
141 #ifdef DEBUG_TCH
142 printf("nbitexp : %d, expmax : %d, expmin : %d\n", nbitexp, expmax, expmin);
143 printf("nbitsig : %d, rangesig : %d\n", nbitsig, rangesig);
144 #endif
145
146 for(i=0; i<nb_bins_compressed_spec_mat; i++){
147 //==============================================
148 // BP1 PSDB == PA_LFR_SC_BP1_PB_F0 == 12 bits = 5 bits (exponent) + 7 bits (significand)
149 PSDB = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX] // S11
150 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] // S22
151 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]; // S33
152
153 significand = frexpf(PSDB/3, &exponent); // 0.5 <= significand < 1
154 // PSDB/3 = significand * 2^exponent
155 // the division by 3 is to ensure that max value <= 2^30
156
157 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
158 exponent = expmin;
159 significand = 0.5; // min value that can be recorded
160 }
161 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
162 exponent = expmax;
163 significand = 1.0; // max value that can be recorded
164 }
165 if (significand == 0) { // in that case exponent == 0 too
166 exponent = expmin;
167 significand = 0.5; // min value that can be recorded
168 }
169
170 psd = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
171 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
172 exp = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int where just
173 // the first nbitexp bits are used (0, ..., 2^nbitexp-1)
174 tmp_uint16 = psd | (exp << nbitsig); // Put the exponent bits (nbitexp) next to the
175 // left place of the significand bits (nbitsig),
176 // making the 16-bit word to be recorded
177 pt_uint8 = (uint8_t*) &tmp_uint16; // Affect an uint8_t pointer with the adress of tmp_uint16
178 #ifdef LSB_FIRST_TCH
179 lfr_bp1[i*NB_BYTES_BP1+2] = pt_uint8[0]; // Record LSB of tmp_uint16
180 lfr_bp1[i*NB_BYTES_BP1+3] = pt_uint8[1]; // Record MSB of tmp_uint16
181 #endif
182 #ifdef MSB_FIRST_TCH
183 lfr_bp1[i*NB_BYTES_BP1+2] = pt_uint8[1]; // Record LSB of tmp_uint16
184 lfr_bp1[i*NB_BYTES_BP1+3] = pt_uint8[0]; // Record MSB of tmp_uint16
185 #endif
186 #ifdef DEBUG_TCH
187 printf("\nBin number: %d\n", i);
188 printf("PSDB / 3 : %16.8e\n",PSDB/3);
189 printf("significand : %16.8e\n",significand);
190 printf("exponent : %d\n" ,exponent);
191 printf("psd for PSDB significand : %d\n",psd);
192 printf("exp for PSDB exponent : %d\n",exp);
193 printf("pt_uint8[1] for PSDB exponent + significand: %.3d or %.2x\n",pt_uint8[1], pt_uint8[1]);
194 printf("pt_uint8[0] for PSDB exponent + significand: %.3d or %.2x\n",pt_uint8[0], pt_uint8[0]);
195 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]);
196 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]);
197 #endif
198 //==============================================
199 // BP1 PSDE == PA_LFR_SC_BP1_PE_F0 == 12 bits = 5 bits (exponent) + 7 bits (significand)
200 PSDE = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21] * k_f0[i][K44_PE] // S44
201 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24] * k_f0[i][K55_PE] // S55
202 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+22] * k_f0[i][K45_PE_RE] // S45 Re
203 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+23] * k_f0[i][K45_PE_IM]; // S45 Im
204
205 significand = frexpf(PSDE/2, &exponent); // 0.5 <= significand < 1
206 // PSDE/2 = significand * 2^exponent
207 // the division by 2 is to ensure that max value <= 2^30
208 // should be reconsidered by taking into account the k-coefficients ...
209
210 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
211 exponent = expmin;
212 significand = 0.5; // min value that can be recorded
213 }
214 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
215 exponent = expmax;
216 significand = 1.0; // max value that can be recorded
217 }
218 if (significand == 0) {// in that case exponent == 0 too
219 exponent = expmin;
220 significand = 0.5; // min value that can be recorded
221 }
222
223 psd = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
224 // where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
225 exp = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int where just
226 // the first nbitexp bits are used (0, ..., 2^nbitexp-1)
227 tmp_uint16 = psd | (exp << nbitsig); // Put the exponent bits (nbitexp) next to the
228 // left place of the significand bits (nbitsig),
229 // making the 16-bit word to be recorded
230 pt_uint8 = (uint8_t*) &tmp_uint16; // Affect an uint8_t pointer with the adress of tmp_uint16
231 #ifdef LSB_FIRST_TCH
232 lfr_bp1[i*NB_BYTES_BP1+0] = pt_uint8[0]; // Record LSB of tmp_uint16
233 lfr_bp1[i*NB_BYTES_BP1+1] = pt_uint8[1]; // Record MSB of tmp_uint16
234 #endif
235 #ifdef MSB_FIRST_TCH
236 lfr_bp1[i*NB_BYTES_BP1+0] = pt_uint8[1]; // Record LSB of tmp_uint16
237 lfr_bp1[i*NB_BYTES_BP1+1] = pt_uint8[0]; // Record MSB of tmp_uint16
238 #endif
239 #ifdef DEBUG_TCH
240 printf("Bin number: %d\n", i);
241 printf("PSDE/2 : %16.8e\n",PSDE/2);
242 printf("significand : %16.8e\n",significand);
243 printf("exponent : %d\n" ,exponent);
244 printf("psd for PSDE significand : %d\n",psd);
245 printf("exp for PSDE exponent : %d\n",exp);
246 printf("pt_uint8[1] for PSDE exponent + significand: %.3d or %.2x\n",pt_uint8[1], pt_uint8[1]);
247 printf("pt_uint8[0] for PSDE exponent + significand: %.3d or %.2x\n",pt_uint8[0], pt_uint8[0]);
248 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]);
249 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]);
250 #endif
251 //==============================================================================
252 // BP1 normal wave vector == PA_LFR_SC_BP1_NVEC_V0_F0 == 8 bits
253 // == PA_LFR_SC_BP1_NVEC_V1_F0 == 8 bits
254 // == PA_LFR_SC_BP1_NVEC_V2_F0 == 1 sign bit
255 tmp = sqrt( compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] //Im S12
256 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] //Im S13
257 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11] //Im S23
258 );
259 NVEC_V0 = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]/ tmp; // S23 Im => n1
260 NVEC_V1 = -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] / tmp; // S13 Im => n2
261 NVEC_V2 = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] / tmp; // S12 Im => n3
262
263 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
264 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
265 pt_uint8 = (uint8_t*) &NVEC_V2; // Affect an uint8_t pointer with the adress of NVEC_V2
266 #ifdef LSB_FIRST_TCH
267 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)
268 // Record it at the 8th bit position (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
269 #endif
270 #ifdef MSB_FIRST_TCH
271 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)
272 // Record it at the 8th bit position (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
273 #endif
274 #ifdef DEBUG_TCH
275 printf("NVEC_V0 : %16.8e\n",NVEC_V0);
276 printf("NVEC_V1 : %16.8e\n",NVEC_V1);
277 printf("NVEC_V2 : %16.8e\n",NVEC_V2);
278 printf("lfr_bp1[i*NB_BYTES_BP1+4] for NVEC_V0 : %u\n",lfr_bp1[i*NB_BYTES_BP1+4]);
279 printf("lfr_bp1[i*NB_BYTES_BP1+5] for NVEC_V1 : %u\n",lfr_bp1[i*NB_BYTES_BP1+5]);
280 printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
281 #endif
282 //=======================================================
283 // BP1 ellipticity == PA_LFR_SC_BP1_ELLIP_F0 == 4 bits
284 aux = 2*tmp / PSDB; // Compute the ellipticity
285
286 tmp_uint8 = (uint8_t) (aux*15 + 0.5); // Shift and cast into a 8-bit uint8_t with rounding
287 // where just the first 4 bits are used (0, ..., 15)
288 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
289 // of the sign bit of NVEC_V2 (recorded
290 // previously in lfr_bp1[i*NB_BYTES_BP1+6])
291 #ifdef DEBUG_TCH
292 printf("ellipticity : %16.8e\n",aux);
293 printf("tmp_uint8 for ellipticity : %u\n",tmp_uint8);
294 printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 + ellipticity : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
295 #endif
296 //==============================================================
297 // BP1 degree of polarization == PA_LFR_SC_BP1_DOP_F0 == 3 bits
298 tr_SB_SB = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]
299 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]
300 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]
301 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1]
302 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2]
303 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3]
304 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4]
305 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]
306 + 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11];
307 aux = PSDB*PSDB;
308 tmp = ( 3*tr_SB_SB - aux ) / ( 2 * aux ); // Compute the degree of polarisation
309
310 tmp_uint8 = (uint8_t) (tmp*7 + 0.5); // Shift and cast into a 8-bit uint8_t with rounding
311 // where just the first 3 bits are used (0, ..., 7)
312 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
313 // (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
314 #ifdef DEBUG_TCH
315 printf("DOP : %16.8e\n",tmp);
316 printf("tmp_uint8 for DOP : %u\n",tmp_uint8);
317 printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 + ellipticity + DOP : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
318 #endif
319 //=======================================================================================
320 // BP1 X_SO-component of the Poynting flux == PA_LFR_SC_BP1_SX_F0 == 8 (+ 2) bits
321 // = 5 bits (exponent) + 3 bits (significand)
322 // + 1 sign bit + 1 argument bit (two sectors)
323 e_cross_b_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_SX_RE] //S34 Re
324 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_SX_RE] //S35 Re
325 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] *k_f0[i][K14_SX_RE] //S14 Re
326 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] *k_f0[i][K15_SX_RE] //S15 Re
327 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_SX_RE] //S24 Re
328 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_SX_RE] //S25 Re
329 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_SX_IM] //S34 Im
330 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_SX_IM] //S35 Im
331 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] *k_f0[i][K14_SX_IM] //S14 Im
332 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] *k_f0[i][K15_SX_IM] //S15 Im
333 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_SX_IM] //S24 Im
334 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_SX_IM]; //S25 Im
335 // Im(S_ji) = -Im(S_ij)
336 // k_ji = k_ij
337 e_cross_b_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_SX_IM] //S34 Re
338 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_SX_IM] //S35 Re
339 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] *k_f0[i][K14_SX_IM] //S14 Re
340 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] *k_f0[i][K15_SX_IM] //S15 Re
341 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_SX_IM] //S24 Re
342 + compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_SX_IM] //S25 Re
343 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_SX_RE] //S34 Im
344 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_SX_RE] //S35 Im
345 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] *k_f0[i][K14_SX_RE] //S14 Im
346 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] *k_f0[i][K15_SX_RE] //S15 Im
347 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_SX_RE] //S24 Im
348 - compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_SX_RE]; //S25 Im
349 #ifdef DEBUG_TCH
350 printf("ReaSX / 2 : %16.8e\n",e_cross_b_re/2);
351 #endif
352 pt_uint8 = (uint8_t*) &e_cross_b_re; // Affect an uint8_t pointer with the adress of e_cross_b_re
353 #ifdef LSB_FIRST_TCH
354 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)
355 // Record it at the 8th bit position (from the right to the left)
356 // of lfr_bp1[i*NB_BYTES_BP1+1]
357 pt_uint8[3] = (pt_uint8[3] & 0x7f); // Make e_cross_b_re be positive in any case: |ReaSX|
358 #endif
359 #ifdef MSB_FIRST_TCH
360 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)
361 // Record it at the 8th bit position (from the right to the left)
362 // of lfr_bp1[i*NB_BYTES_BP1+1]
363 pt_uint8[0] = (pt_uint8[0] & 0x7f); // Make e_cross_b_re be positive in any case: |ReaSX|
364 #endif
365 significand = frexpf(e_cross_b_re/2, &exponent); // 0.5 <= significand < 1
366 // ReaSX/2 = significand * 2^exponent
367 // The division by 2 is to ensure that max value <= 2^30 (rough estimate)
368 // Should be reconsidered by taking into account the k-coefficients ...
369
370 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
371 exponent = expmin;
372 significand = 0.5; // min value that can be recorded
373 }
374 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
375 exponent = expmax;
376 significand = 1.0; // max value that can be recorded
377 }
378 if (significand == 0) { // in that case exponent == 0 too
379 exponent = expmin;
380 significand = 0.5; // min value that can be recorded
381 }
382
383 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
384 // where just the first 3 bits are used (0, ..., 7)
385 tmp_uint8 = (uint8_t) (exponent-expmin); // Shift and cast into a 8-bit uint8_t where
386 // just the first 5 bits are used (0, ..., 2^5-1)
387 #ifdef DEBUG_TCH
388 printf("|ReaSX| / 2 : %16.8e\n",e_cross_b_re/2);
389 printf("significand : %16.8e\n",significand);
390 printf("exponent : %d\n" ,exponent);
391 printf("lfr_bp1[i*NB_BYTES_BP1+7] for ReaSX significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+7]);
392 printf("tmp_uint8 for ReaSX exponent : %d\n",tmp_uint8);
393 #endif
394 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
395 // with lfr_bp1[i*NB_BYTES_BP1+7]
396 #ifdef DEBUG_TCH
397 printf("lfr_bp1[i*NB_BYTES_BP1+7] for ReaSX exponent + significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+7]);
398 printf("lfr_bp1[i*NB_BYTES_BP1+1] for ReaSX sign + PSDE 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+1]);
399 printf("ImaSX / 2 : %16.8e\n",e_cross_b_im/2);
400 #endif
401 pt_uint8 = (uint8_t*) &e_cross_b_im; // Affect an uint8_t pointer with the adress of e_cross_b_im
402 #ifdef LSB_FIRST_TCH
403 pt_uint8[3] = pt_uint8[3] & 0x7f; // Make e_cross_b_im be positive in any case: |ImaSX|
404 #endif
405 #ifdef MSB_FIRST_TCH
406 pt_uint8[0] = pt_uint8[0] & 0x7f; // Make e_cross_b_im be positive in any case: |ImaSX|
407 #endif
408 tmp_uint8 = (e_cross_b_im > e_cross_b_re) ? 0x40 : 0x00; // Determine the sector argument of SX. If |Im| > |Re| affect
409 // an unsigned 8-bit char with 01000000; otherwise with null.
410 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
411 // to the left) of lfr_bp1[i*NB_BYTES_BP1+1], by simple logical addition.
412 #ifdef DEBUG_TCH
413 printf("|ImaSX| / 2 : %16.8e\n",e_cross_b_im/2);
414 printf("ArgSX sign : %u\n",tmp_uint8);
415 printf("lfr_bp1[i*NB_BYTES_BP1+1] for ReaSX & ArgSX signs + PSDE 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+1]);
416 #endif
417 //======================================================================
418 // BP1 phase velocity estimator == PA_LFR_SC_BP1_VPHI_F0 == 8 (+ 2) bits
419 // = 5 bits (exponent) + 3 bits (significand)
420 // + 1 sign bit + 1 argument bit (two sectors)
421 ny = sin(alpha_M)*NVEC_V1 + cos(alpha_M)*NVEC_V2;
422 nz = NVEC_V0;
423 bx_bx_star = cos(alpha_M)*cos(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] // S22 Re
424 + sin(alpha_M)*sin(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16] // S33 Re
425 - 2*sin(alpha_M)*cos(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]; // S23 Re
426
427 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
428 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NY_RE] //S25 Re
429 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NY_RE] //S34 Re
430 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NY_RE] //S35 Re
431 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NY_IM] //S24 Im
432 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NY_IM] //S25 Im
433 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NY_IM] //S34 Im
434 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NY_IM]) //S35 Im
435 + nz * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NZ_RE] //S24 Re
436 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NZ_RE] //S25 Re
437 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NZ_RE] //S34 Re
438 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NZ_RE] //S35 Re
439 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NZ_IM] //S24 Im
440 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NZ_IM] //S25 Im
441 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NZ_IM] //S34 Im
442 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NZ_IM]);//S35 Im
443 // Im(S_ji) = -Im(S_ij)
444 // k_ji = k_ij
445 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
446 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NY_IM] //S25 Re
447 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NY_IM] //S34 Re
448 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NY_IM] //S35 Re
449 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NY_RE] //S24 Im
450 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NY_RE] //S25 Im
451 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NY_RE] //S34 Im
452 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NY_RE]) //S35 Im
453 + nz * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NZ_IM] //S24 Re
454 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NZ_IM] //S25 Re
455 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NZ_IM] //S34 Re
456 +compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NZ_IM] //S35 Re
457 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NZ_RE] //S24 Im
458 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NZ_RE] //S25 Im
459 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NZ_RE] //S34 Im
460 -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NZ_RE]);//S35 Im
461 #ifdef DEBUG_TCH
462 printf("n_cross_e_scal_b_re : %16.8e\n",n_cross_e_scal_b_re);
463 printf("n_cross_e_scal_b_im : %16.8e\n",n_cross_e_scal_b_im);
464 #endif
465 // vphi = n_cross_e_scal_b_re / bx_bx_star => sign(VPHI) = sign(n_cross_e_scal_b_re)
466 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
467 #ifdef LSB_FIRST_TCH
468 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)
469 // Record it at the 8th bit position (from the right to the left)
470 // of lfr_bp1[i*NB_BYTES_BP1+3]
471 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|
472 #endif
473 #ifdef MSB_FIRST_TCH
474 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)
475 // Record it at the 8th bit position (from the right to the left)
476 // of lfr_bp1[i*NB_BYTES_BP1+3]
477 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|
478 #endif
479 vphi = n_cross_e_scal_b_re / bx_bx_star; // Compute |VPHI|
480
481 significand = frexpf(vphi/2, &exponent); // 0.5 <= significand < 1
482 // vphi/2 = significand * 2^exponent
483 // The division by 2 is to ensure that max value <= 2^30 (rough estimate)
484 // Should be reconsidered by taking into account the k-coefficients ...
485
486 if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
487 exponent = expmin;
488 significand = 0.5; // min value that can be recorded
489 }
490 if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
491 exponent = expmax;
492 significand = 1.0; // max value that can be recorded
493 }
494 if (significand == 0) {// in that case exponent == 0 too
495 exponent = expmin;
496 significand = 0.5; // min value that can be recorded
497 }
498 #ifdef DEBUG_TCH
499 printf("|VPHI| / 2 : %16.8e\n",vphi/2);
500 printf("significand : %16.8e\n",significand);
501 printf("exponent : %d\n" ,exponent);
502 #endif
503 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
504 // where just the first 3 bits are used (0, ..., 7)
505 tmp_uint8 = (uint8_t) (exponent-expmin); // Shift and cast into a 8-bit uint8_t where
506 // just the first 5 bits are used (0, ..., 2^5-1)
507 #ifdef DEBUG_TCH
508 printf("lfr_bp1[i*NB_BYTES_BP1+8] for VPHI significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+8]);
509 printf("tmp_uint8 for VPHI exponent : %d\n",tmp_uint8);
510 #endif
511 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
512 // with lfr_bp1[i*NB_BYTES_BP1+8]
513 #ifdef DEBUG_TCH
514 printf("lfr_bp1[i*NB_BYTES_BP1+8] for VPHI exponent + significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+8]);
515 printf("lfr_bp1[i*NB_BYTES_BP1+3] for VPHI sign + PSDB 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+3]);
516 #endif
517 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
518 #ifdef LSB_FIRST_TCH
519 pt_uint8[3] = pt_uint8[3] & 0x7f; // Make n_cross_e_scal_b_im be positive in any case: |ImaSX|
520 #endif
521 #ifdef MSB_FIRST_TCH
522 pt_uint8[0] = pt_uint8[0] & 0x7f; // Make n_cross_e_scal_b_im be positive in any case: |ImaSX|
523 #endif
524 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
525 // an unsigned 8-bit char with 01000000; otherwise with null.
526 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
527 // to the left) of lfr_bp1[i*NB_BYTES_BP1+3], by simple logical addition.
528 #ifdef DEBUG_TCH
529 printf("|n_cross_e_scal_b_im| : %16.8e\n",n_cross_e_scal_b_im);
530 printf("|n_cross_e_scal_b_im|/bx_bx_star/2: %16.8e\n",n_cross_e_scal_b_im/bx_bx_star/2);
531 printf("ArgNEBX sign : %u\n",tmp_uint8);
532 printf("lfr_bp1[i*NB_BYTES_BP1+3] for VPHI & ArgNEBX signs + PSDB 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+3]);
533 #endif
534 }
535 }
536
537 void BP2_set( float * compressed_spec_mat, uint8_t nb_bins_compressed_spec_mat, uint8_t * lfr_bp2 )
538 {
539 float cross_re; // 32-bit floating point
540 float cross_im;
541 float aux;
542 float significand;
543 int exponent; // 32-bit signed integer
544 uint8_t nbitexp; // 8-bit unsigned integer
545 uint8_t nbitsig;
546 uint8_t *pt_uint8; // pointer on unsigned 8-bit integer
547 int8_t expmin; // 8-bit signed integer
548 int8_t expmax;
549 uint16_t rangesig; // 16-bit unsigned integer
550 uint16_t autocor;
551 uint16_t exp;
552 uint16_t tmp_uint16;
553 uint16_t i;
554
555 #ifdef DEBUG_TCH
556 printf("BP2 : \n");
557 printf("Number of bins: %d\n", nb_bins_compressed_spec_mat);
558 #endif
559
560 // For floating point data to be recorded on 16-bit words :
561 nbitexp = 6; // number of bits for the exponent
562 nbitsig = 16 - nbitexp; // number of bits for the significand
563 rangesig = (1 << nbitsig)-1; // == 2^nbitsig - 1
564 expmax = 32;
565 expmin = expmax - (1 << nbitexp) + 1;
566
567 #ifdef DEBUG_TCH
568 printf("nbitexp : %d, nbitsig : %d, rangesig : %d\n", nbitexp, nbitsig, rangesig);
569 printf("expmin : %d, expmax : %d\n", expmin, expmax);
570 #endif
571
572 for(i = 0; i<nb_bins_compressed_spec_mat; i++){
573 //==============================================
574 // BP2 normalized cross correlations == PA_LFR_SC_BP2_CROSS_F0 == 10 * (8+8) bits
575 // == PA_LFR_SC_BP2_CROSS_RE_0_F0 == 8 bits
576 // == PA_LFR_SC_BP2_CROSS_IM_0_F0 == 8 bits
577 // == PA_LFR_SC_BP2_CROSS_RE_1_F0 == 8 bits
578 // == PA_LFR_SC_BP2_CROSS_IM_1_F0 == 8 bits
579 // == PA_LFR_SC_BP2_CROSS_RE_2_F0 == 8 bits
580 // == PA_LFR_SC_BP2_CROSS_IM_2_F0 == 8 bits
581 // == PA_LFR_SC_BP2_CROSS_RE_3_F0 == 8 bits
582 // == PA_LFR_SC_BP2_CROSS_IM_3_F0 == 8 bits
583 // == PA_LFR_SC_BP2_CROSS_RE_4_F0 == 8 bits
584 // == PA_LFR_SC_BP2_CROSS_IM_4_F0 == 8 bits
585 // == PA_LFR_SC_BP2_CROSS_RE_5_F0 == 8 bits
586 // == PA_LFR_SC_BP2_CROSS_IM_5_F0 == 8 bits
587 // == PA_LFR_SC_BP2_CROSS_RE_6_F0 == 8 bits
588 // == PA_LFR_SC_BP2_CROSS_IM_6_F0 == 8 bits
589 // == PA_LFR_SC_BP2_CROSS_RE_7_F0 == 8 bits
590 // == PA_LFR_SC_BP2_CROSS_IM_7_F0 == 8 bits
591 // == PA_LFR_SC_BP2_CROSS_RE_8_F0 == 8 bits
592 // == PA_LFR_SC_BP2_CROSS_IM_8_F0 == 8 bits
593 // == PA_LFR_SC_BP2_CROSS_RE_9_F0 == 8 bits
594 // == PA_LFR_SC_BP2_CROSS_IM_9_F0 == 8 bits
595 // S12
596 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]);
597 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1] / aux;
598 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] / aux;
599 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
600 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
601 #ifdef DEBUG_TCH
602 printf("\nBin number: %d\n", i);
603 printf("lfr_bp2[i*NB_BYTES_BP2+10] for cross12_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+10]);
604 printf("lfr_bp2[i*NB_BYTES_BP2+20] for cross12_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+20]);
605 #endif
606 // S13
607 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
608 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3] / aux;
609 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] / aux;
610 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
611 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
612 #ifdef DEBUG_TCH
613 printf("lfr_bp2[i*NB_BYTES_BP2+11] for cross13_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+11]);
614 printf("lfr_bp2[i*NB_BYTES_BP2+21] for cross13_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+21]);
615 #endif
616 // S14
617 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
618 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] / aux;
619 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] / aux;
620 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
621 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
622 #ifdef DEBUG_TCH
623 printf("lfr_bp2[i*NB_BYTES_BP2+12] for cross14_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+12]);
624 printf("lfr_bp2[i*NB_BYTES_BP2+22] for cross14_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+22]);
625 #endif
626 // S15
627 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
628 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] / aux;
629 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] / aux;
630 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
631 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
632 #ifdef DEBUG_TCH
633 printf("lfr_bp2[i*NB_BYTES_BP2+13] for cross15_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+13]);
634 printf("lfr_bp2[i*NB_BYTES_BP2+23] for cross15_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+23]);
635 #endif
636 // S23
637 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
638 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10] / aux;
639 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11] / aux;
640 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
641 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
642 #ifdef DEBUG_TCH
643 printf("lfr_bp2[i*NB_BYTES_BP2+14] for cross23_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+14]);
644 printf("lfr_bp2[i*NB_BYTES_BP2+24] for cross23_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+24]);
645 #endif
646 // S24
647 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
648 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12] / aux;
649 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13] / aux;
650 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
651 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
652 #ifdef DEBUG_TCH
653 printf("lfr_bp2[i*NB_BYTES_BP2+15] for cross24_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+15]);
654 printf("lfr_bp2[i*NB_BYTES_BP2+25] for cross24_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+25]);
655 #endif
656 // S25
657 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
658 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14] / aux;
659 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15] / aux;
660 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
661 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
662 #ifdef DEBUG_TCH
663 printf("lfr_bp2[i*NB_BYTES_BP2+16] for cross25_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+16]);
664 printf("lfr_bp2[i*NB_BYTES_BP2+26] for cross25_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+26]);
665 #endif
666 // S34
667 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
668 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17] / aux;
669 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18] / aux;
670 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
671 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
672 #ifdef DEBUG_TCH
673 printf("lfr_bp2[i*NB_BYTES_BP2+17] for cross34_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+17]);
674 printf("lfr_bp2[i*NB_BYTES_BP2+27] for cross34_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+27]);
675 #endif
676 // S35
677 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
678 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19] / aux;
679 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20] / aux;
680 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
681 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
682 #ifdef DEBUG_TCH
683 printf("lfr_bp2[i*NB_BYTES_BP2+18] for cross35_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+18]);
684 printf("lfr_bp2[i*NB_BYTES_BP2+28] for cross35_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+28]);
685 #endif
686 // S45
687 aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
688 cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+22] / aux;
689 cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+23] / aux;
690 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
691 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
692 #ifdef DEBUG_TCH
693 printf("lfr_bp2[i*NB_BYTES_BP2+19] for cross45_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+19]);
694 printf("lfr_bp2[i*NB_BYTES_BP2+29] for cross45_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+29]);
695 #endif
696 //==============================================
697 // BP2 auto correlations == PA_LFR_SC_BP2_AUTO_F0 == 5*16 bits = 5*[6 bits (exponent) + 10 bits (significand)]
698 // == PA_LFR_SC_BP2_AUTO_A0_F0 == 16 bits
699 // == PA_LFR_SC_BP2_AUTO_A1_F0 == 16 bits
700 // == PA_LFR_SC_BP2_AUTO_A2_F0 == 16 bits
701 // == PA_LFR_SC_BP2_AUTO_A3_F0 == 16 bits
702 // == PA_LFR_SC_BP2_AUTO_A4_F0 == 16 bits
703 // S11
704 significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX], &exponent); // 0.5 <= significand < 1
705 // S11 = significand * 2^exponent
706 #ifdef DEBUG_TCH
707 printf("S11 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]);