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// In the frame of RPW LFR Sofware ICD Issue1 Rev8 (05/07/2013)
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// version 1.0: 31/07/2013
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// version 1.1: 02/04/2014
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// version 1.2: 30/04/2014
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#include "basic_parameters.h"
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#include <math.h>
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#include <stdio.h>
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#include <stdint.h>
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#define K44_PE 0
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#define K55_PE 1
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#define K45_PE_RE 2
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#define K45_PE_IM 3
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#define K14_SX_RE 4
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#define K14_SX_IM 5
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#define K15_SX_RE 6
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#define K15_SX_IM 7
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#define K24_SX_RE 8
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#define K24_SX_IM 9
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#define K25_SX_RE 10
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#define K25_SX_IM 11
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#define K34_SX_RE 12
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#define K34_SX_IM 13
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#define K35_SX_RE 14
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#define K35_SX_IM 15
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#define K24_NY_RE 16
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#define K24_NY_IM 17
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#define K25_NY_RE 18
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#define K25_NY_IM 19
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#define K34_NY_RE 20
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#define K34_NY_IM 21
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#define K35_NY_RE 22
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#define K35_NY_IM 23
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#define K24_NZ_RE 24
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#define K24_NZ_IM 25
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#define K25_NZ_RE 26
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#define K25_NZ_IM 27
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#define K34_NZ_RE 28
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#define K34_NZ_IM 29
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#define K35_NZ_RE 30
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#define K35_NZ_IM 31
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float k_f0[NB_BINS_COMPRESSED_MATRIX_f0][32];
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void init_k_f0( void )
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{
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uint16_t i; // 16 bits unsigned
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for(i=0; i<NB_BINS_COMPRESSED_MATRIX_f0; i++){
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k_f0[i][K44_PE] = 1;
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k_f0[i][K55_PE] = 1;
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k_f0[i][K45_PE_RE] = 1;
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k_f0[i][K45_PE_IM] = 1;
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k_f0[i][K14_SX_RE] = 1;
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k_f0[i][K14_SX_IM] = 1;
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k_f0[i][K15_SX_RE] = 1;
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k_f0[i][K15_SX_IM] = 1;
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k_f0[i][K24_SX_RE] = 1;
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k_f0[i][K24_SX_IM] = 1;
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k_f0[i][K25_SX_RE] = 1;
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k_f0[i][K25_SX_IM] = 1;
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k_f0[i][K34_SX_RE] = 1;
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k_f0[i][K34_SX_IM] = 1;
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k_f0[i][K35_SX_RE] = 1;
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k_f0[i][K35_SX_IM] = 1;
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k_f0[i][K24_NY_RE] = 1;
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k_f0[i][K24_NY_IM] = 1;
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k_f0[i][K25_NY_RE] = 1;
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k_f0[i][K25_NY_IM] = 1;
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k_f0[i][K34_NY_RE] = 1;
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k_f0[i][K34_NY_IM] = 1;
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k_f0[i][K35_NY_RE] = 1;
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k_f0[i][K35_NY_IM] = 1;
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k_f0[i][K24_NZ_RE] = 1;
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k_f0[i][K24_NZ_IM] = 1;
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k_f0[i][K25_NZ_RE] = 1;
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k_f0[i][K25_NZ_IM] = 1;
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k_f0[i][K34_NZ_RE] = 1;
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k_f0[i][K34_NZ_IM] = 1;
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k_f0[i][K35_NZ_RE] = 1;
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k_f0[i][K35_NZ_IM] = 1;
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}
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}
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float alpha_M = 45 * (3.1415927/180);
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void BP1_set( float * compressed_spec_mat, uint8_t nb_bins_compressed_spec_mat, uint8_t * lfr_bp1 ){
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int exponent; // 32 bits signed
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float PSDB; // 32 bits floating point
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float PSDE;
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float tmp;
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float NVEC_V0;
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float NVEC_V1;
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float NVEC_V2;
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float aux;
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float tr_SB_SB;
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float e_cross_b_re;
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float e_cross_b_im;
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float n_cross_e_scal_b_re;
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float n_cross_e_scal_b_im;
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float ny;
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float nz;
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float bx_bx_star;
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float vphi;
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float significand;
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uint8_t nbitexp; // 8 bits unsigned
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uint8_t nbitsig;
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uint8_t tmp_uint8;
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uint8_t *pt_uint8; // pointer on unsigned 8-bit bytes
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int8_t expmin; // 8 bits signed
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int8_t expmax;
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int16_t rangesig; // 16 bits unsigned
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uint16_t psd;
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uint16_t exp;
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uint16_t tmp_uint16;
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uint16_t i;
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init_k_f0();
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#ifdef DEBUG_TCH
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printf("BP1 : \n");
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printf("Number of bins: %d\n", nb_bins_compressed_spec_mat);
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#endif
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// initialization for managing the exponents of the floating point data:
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nbitexp = 5; // number of bits for the exponent
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expmax = 30; // maximum value of the exponent
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expmin = expmax - (1 << nbitexp) + 1; // accordingly the minimum exponent value
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// for floating point data to be recorded on 12-bit words:
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nbitsig = 12 - nbitexp; // number of bits for the significand
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rangesig = (1 << nbitsig)-1; // == 2^nbitsig - 1
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#ifdef DEBUG_TCH
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printf("nbitexp : %d, expmax : %d, expmin : %d\n", nbitexp, expmax, expmin);
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printf("nbitsig : %d, rangesig : %d\n", nbitsig, rangesig);
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#endif
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for(i=0; i<nb_bins_compressed_spec_mat; i++){
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//==============================================
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// BP1 PSDB == PA_LFR_SC_BP1_PB_F0 == 12 bits = 5 bits (exponent) + 7 bits (significand)
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PSDB = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX] // S11
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+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] // S22
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+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]; // S33
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significand = frexpf(PSDB/3, &exponent); // 0.5 <= significand < 1
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// PSDB/3 = significand * 2^exponent
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// the division by 3 is to ensure that max value <= 2^30
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if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
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exponent = expmin;
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significand = 0.5; // min value that can be recorded
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}
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if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
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exponent = expmax;
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significand = 1.0; // max value that can be recorded
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}
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if (significand == 0) {// in that case exponent == 0 too
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exponent = expmin;
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significand = 0.5; // min value that can be recorded
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}
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psd = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
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// where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
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exp = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int where just
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// the first nbitexp bits are used (0, ..., 2^nbitexp-1)
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tmp_uint16 = psd | (exp << nbitsig); // Put the exponent bits (nbitexp) next to the
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// left place of the significand bits (nbitsig),
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// making the 16-bit word to be recorded
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pt_uint8 = (uint8_t*) &tmp_uint16; // Affect an uint8_t pointer with the adress of tmp_uint16
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#ifdef LSB_FIRST_TCH
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lfr_bp1[i*NB_BYTES_BP1+2] = pt_uint8[0]; // Record LSB of tmp_uint16
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lfr_bp1[i*NB_BYTES_BP1+3] = pt_uint8[1]; // Record MSB of tmp_uint16
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#endif
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#ifdef MSB_FIRST_TCH
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lfr_bp1[i*NB_BYTES_BP1+2] = pt_uint8[1]; // Record LSB of tmp_uint16
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lfr_bp1[i*NB_BYTES_BP1+3] = pt_uint8[0]; // Record MSB of tmp_uint16
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#endif
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#ifdef DEBUG_TCH
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printf("\nBin number: %d\n", i);
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printf("PSDB / 3 : %16.8e\n",PSDB/3);
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printf("significand : %16.8e\n",significand);
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printf("exponent : %d\n" ,exponent);
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printf("psd for PSDB significand : %d\n",psd);
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printf("exp for PSDB exponent : %d\n",exp);
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printf("pt_uint8[1] for PSDB exponent + significand: %.3d or %.2x\n",pt_uint8[1], pt_uint8[1]);
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printf("pt_uint8[0] for PSDB exponent + significand: %.3d or %.2x\n",pt_uint8[0], pt_uint8[0]);
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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]);
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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]);
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#endif
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//==============================================
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// BP1 PSDE == PA_LFR_SC_BP1_PE_F0 == 12 bits = 5 bits (exponent) + 7 bits (significand)
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PSDE = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21] * k_f0[i][K44_PE] // S44
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+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24] * k_f0[i][K55_PE] // S55
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+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+22] * k_f0[i][K45_PE_RE] // S45 Re
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- compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+23] * k_f0[i][K45_PE_IM]; // S45 Im
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significand = frexpf(PSDE/2, &exponent); // 0.5 <= significand < 1
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// PSDE/2 = significand * 2^exponent
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// the division by 2 is to ensure that max value <= 2^30
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// should be reconsidered by taking into account the k-coefficients ...
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if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
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exponent = expmin;
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significand = 0.5; // min value that can be recorded
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}
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if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
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exponent = expmax;
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significand = 1.0; // max value that can be recorded
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}
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if (significand == 0) {// in that case exponent == 0 too
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exponent = expmin;
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significand = 0.5; // min value that can be recorded
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}
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psd = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
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// where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
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exp = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int where just
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// the first nbitexp bits are used (0, ..., 2^nbitexp-1)
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tmp_uint16 = psd | (exp << nbitsig); // Put the exponent bits (nbitexp) next to the
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// left place of the significand bits (nbitsig),
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// making the 16-bit word to be recorded
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pt_uint8 = (uint8_t*) &tmp_uint16; // Affect an uint8_t pointer with the adress of tmp_uint16
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#ifdef LSB_FIRST_TCH
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lfr_bp1[i*NB_BYTES_BP1+0] = pt_uint8[0]; // Record LSB of tmp_uint16
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lfr_bp1[i*NB_BYTES_BP1+1] = pt_uint8[1]; // Record MSB of tmp_uint16
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#endif
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#ifdef MSB_FIRST_TCH
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lfr_bp1[i*NB_BYTES_BP1+0] = pt_uint8[1]; // Record LSB of tmp_uint16
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lfr_bp1[i*NB_BYTES_BP1+1] = pt_uint8[0]; // Record MSB of tmp_uint16
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#endif
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#ifdef DEBUG_TCH
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printf("Bin number: %d\n", i);
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printf("PSDE/2 : %16.8e\n",PSDE/2);
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printf("significand : %16.8e\n",significand);
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printf("exponent : %d\n" ,exponent);
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printf("psd for PSDE significand : %d\n",psd);
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printf("exp for PSDE exponent : %d\n",exp);
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printf("pt_uint8[1] for PSDE exponent + significand: %.3d or %.2x\n",pt_uint8[1], pt_uint8[1]);
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printf("pt_uint8[0] for PSDE exponent + significand: %.3d or %.2x\n",pt_uint8[0], pt_uint8[0]);
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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]);
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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]);
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#endif
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//==============================================================================
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// BP1 normal wave vector == PA_LFR_SC_BP1_NVEC_V0_F0 == 8 bits
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// == PA_LFR_SC_BP1_NVEC_V1_F0 == 8 bits
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// == PA_LFR_SC_BP1_NVEC_V2_F0 == 1 sign bit
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tmp = sqrt( compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] //Im S12
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+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] //Im S13
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+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11] //Im S23
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);
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NVEC_V0 = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]/ tmp; // S23 Im => n1
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NVEC_V1 = -compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] / tmp; // S13 Im => n2
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NVEC_V2 = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] / tmp; // S12 Im => n3
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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
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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
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pt_uint8 = (uint8_t*) &NVEC_V2; // affect an uint8_t pointer with the adress of NVEC_V2
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#ifdef LSB_FIRST_TCH
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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)
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// record it at the 8th bit position (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
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#endif
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#ifdef MSB_FIRST_TCH
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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)
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// record it at the 8th bit position (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
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#endif
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#ifdef DEBUG_TCH
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printf("NVEC_V0 : %16.8e\n",NVEC_V0);
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printf("NVEC_V1 : %16.8e\n",NVEC_V1);
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printf("NVEC_V2 : %16.8e\n",NVEC_V2);
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printf("lfr_bp1[i*NB_BYTES_BP1+4] for NVEC_V0 : %u\n",lfr_bp1[i*NB_BYTES_BP1+4]);
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printf("lfr_bp1[i*NB_BYTES_BP1+5] for NVEC_V1 : %u\n",lfr_bp1[i*NB_BYTES_BP1+5]);
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printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
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#endif
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//=======================================================
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// BP1 ellipticity == PA_LFR_SC_BP1_ELLIP_F0 == 4 bits
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aux = 2*tmp / PSDB; // compute the ellipticity
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tmp_uint8 = (uint8_t) (aux*15 + 0.5); // shift and cast into a 8-bit uint8_t with rounding
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// where just the first 4 bits are used (0, ..., 15)
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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
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// of the sign bit of NVEC_V2 (recorded
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// previously in lfr_bp1[i*NB_BYTES_BP1+6])
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#ifdef DEBUG_TCH
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printf("ellipticity : %16.8e\n",aux);
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printf("tmp_uint8 for ellipticity : %u\n",tmp_uint8);
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printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 + ellipticity : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
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#endif
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//==============================================================
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// BP1 degree of polarization == PA_LFR_SC_BP1_DOP_F0 == 3 bits
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tr_SB_SB = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]
|
|
|
+ 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1]
|
|
|
+ 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2]
|
|
|
+ 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3]
|
|
|
+ 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] *compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4]
|
|
|
+ 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]
|
|
|
+ 2 * compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11];
|
|
|
aux = PSDB*PSDB;
|
|
|
tmp = ( 3*tr_SB_SB - aux ) / ( 2 * aux ); // compute the degree of polarisation
|
|
|
|
|
|
tmp_uint8 = (uint8_t) (tmp*7 + 0.5);// shift and cast into a 8-bit uint8_t with rounding
|
|
|
// where just the first 3 bits are used (0, ..., 7)
|
|
|
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
|
|
|
// (from the right to the left) of lfr_bp1[i*NB_BYTES_BP1+6]
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("DOP : %16.8e\n",tmp);
|
|
|
printf("tmp_uint8 for DOP : %u\n",tmp_uint8);
|
|
|
printf("lfr_bp1[i*NB_BYTES_BP1+6] for NVEC_V2 + ellipticity + DOP : %u\n",lfr_bp1[i*NB_BYTES_BP1+6]);
|
|
|
#endif
|
|
|
//=======================================================================================
|
|
|
// BP1 X_SO-component of the Poynting flux == PA_LFR_SC_BP1_SX_F0 == 8 (+ 2) bits
|
|
|
// = 5 bits (exponent) + 3 bits (significand)
|
|
|
// + 1 sign bit + 1 argument bit (two sectors)
|
|
|
e_cross_b_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_SX_RE] //S34 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_SX_RE] //S35 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] *k_f0[i][K14_SX_RE] //S14 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] *k_f0[i][K15_SX_RE] //S15 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_SX_RE] //S24 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_SX_RE] //S25 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_SX_IM] //S34 Im
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_SX_IM] //S35 Im
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] *k_f0[i][K14_SX_IM] //S14 Im
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] *k_f0[i][K15_SX_IM] //S15 Im
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_SX_IM] //S24 Im
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_SX_IM]; //S25 Im
|
|
|
// Im(S_ji) = -Im(S_ij)
|
|
|
// k_ji = k_ij
|
|
|
e_cross_b_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_SX_IM] //S34 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_SX_IM] //S35 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] *k_f0[i][K14_SX_IM] //S14 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] *k_f0[i][K15_SX_IM] //S15 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_SX_IM] //S24 Re
|
|
|
+ compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_SX_IM] //S25 Re
|
|
|
- compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_SX_RE] //S34 Im
|
|
|
- compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_SX_RE] //S35 Im
|
|
|
- compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] *k_f0[i][K14_SX_RE] //S14 Im
|
|
|
- compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] *k_f0[i][K15_SX_RE] //S15 Im
|
|
|
- compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_SX_RE] //S24 Im
|
|
|
- compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_SX_RE]; //S25 Im
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("ReaSX / 2 : %16.8e\n",e_cross_b_re/2);
|
|
|
#endif
|
|
|
pt_uint8 = (uint8_t*) &e_cross_b_re; // Affect an uint8_t pointer with the adress of e_cross_b_re
|
|
|
#ifdef LSB_FIRST_TCH
|
|
|
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)
|
|
|
// Record it at the 8th bit position (from the right to the left)
|
|
|
// of lfr_bp1[i*NB_BYTES_BP1+1]
|
|
|
pt_uint8[3] = (pt_uint8[3] & 0x7f); // Make e_cross_b_re be positive in any case: |ReaSX|
|
|
|
#endif
|
|
|
#ifdef MSB_FIRST_TCH
|
|
|
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)
|
|
|
// Record it at the 8th bit position (from the right to the left)
|
|
|
// of lfr_bp1[i*NB_BYTES_BP1+1]
|
|
|
pt_uint8[0] = (pt_uint8[0] & 0x7f); // Make e_cross_b_re be positive in any case: |ReaSX|
|
|
|
#endif
|
|
|
significand = frexpf(e_cross_b_re/2, &exponent);// 0.5 <= significand < 1
|
|
|
// ReaSX/2 = significand * 2^exponent
|
|
|
// The division by 2 is to ensure that max value <= 2^30 (rough estimate)
|
|
|
// Should be reconsidered by taking into account the k-coefficients ...
|
|
|
|
|
|
if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
|
|
|
exponent = expmax;
|
|
|
significand = 1.0; // max value that can be recorded
|
|
|
}
|
|
|
if (significand == 0) {// in that case exponent == 0 too
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
|
|
|
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
|
|
|
// where just the first 3 bits are used (0, ..., 7)
|
|
|
tmp_uint8 = (uint8_t) (exponent-expmin); // Shift and cast into a 8-bit uint8_t where
|
|
|
// just the first 5 bits are used (0, ..., 2^5-1)
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("|ReaSX| / 2 : %16.8e\n",e_cross_b_re/2);
|
|
|
printf("significand : %16.8e\n",significand);
|
|
|
printf("exponent : %d\n" ,exponent);
|
|
|
printf("lfr_bp1[i*NB_BYTES_BP1+7] for ReaSX significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+7]);
|
|
|
printf("tmp_uint8 for ReaSX exponent : %d\n",tmp_uint8);
|
|
|
#endif
|
|
|
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
|
|
|
// with lfr_bp1[i*NB_BYTES_BP1+7]
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp1[i*NB_BYTES_BP1+7] for ReaSX exponent + significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+7]);
|
|
|
printf("lfr_bp1[i*NB_BYTES_BP1+1] for ReaSX sign + PSDE 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+1]);
|
|
|
printf("ImaSX / 2 : %16.8e\n",e_cross_b_im/2);
|
|
|
#endif
|
|
|
pt_uint8 = (uint8_t*) &e_cross_b_im; // Affect an uint8_t pointer with the adress of e_cross_b_im
|
|
|
#ifdef LSB_FIRST_TCH
|
|
|
pt_uint8[3] = pt_uint8[3] & 0x7f; // Make e_cross_b_im be positive in any case: |ImaSX|
|
|
|
#endif
|
|
|
#ifdef MSB_FIRST_TCH
|
|
|
pt_uint8[0] = pt_uint8[0] & 0x7f; // Make e_cross_b_im be positive in any case: |ImaSX|
|
|
|
#endif
|
|
|
tmp_uint8 = (e_cross_b_im > e_cross_b_re) ? 0x40 : 0x00; // Determine the sector argument of SX. If |Im| > |Re| affect
|
|
|
// an unsigned 8-bit char with 01000000; otherwise with null.
|
|
|
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
|
|
|
// to the left) of lfr_bp1[i*NB_BYTES_BP1+1], by simple logical addition.
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("|ImaSX| / 2 : %16.8e\n",e_cross_b_im/2);
|
|
|
printf("ArgSX sign : %u\n",tmp_uint8);
|
|
|
printf("lfr_bp1[i*NB_BYTES_BP1+1] for ReaSX & ArgSX signs + PSDE 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+1]);
|
|
|
#endif
|
|
|
//======================================================================
|
|
|
// BP1 phase velocity estimator == PA_LFR_SC_BP1_VPHI_F0 == 8 (+ 2) bits
|
|
|
// = 5 bits (exponent) + 3 bits (significand)
|
|
|
// + 1 sign bit + 1 argument bit (two sectors)
|
|
|
ny = sin(alpha_M)*NVEC_V1 + cos(alpha_M)*NVEC_V2;
|
|
|
nz = NVEC_V0;
|
|
|
bx_bx_star = cos(alpha_M)*cos(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9] // S22 Re
|
|
|
+ sin(alpha_M)*sin(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16] // S33 Re
|
|
|
- 2*sin(alpha_M)*cos(alpha_M)*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10]; // S23 Re
|
|
|
|
|
|
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
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NY_RE] //S25 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NY_RE] //S34 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NY_RE] //S35 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NY_IM] //S24 Im
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NY_IM] //S25 Im
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NY_IM] //S34 Im
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NY_IM]) //S35 Im
|
|
|
+ nz * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NZ_RE] //S24 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NZ_RE] //S25 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NZ_RE] //S34 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NZ_RE] //S35 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NZ_IM] //S24 Im
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NZ_IM] //S25 Im
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NZ_IM] //S34 Im
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NZ_IM]);//S35 Im
|
|
|
// Im(S_ji) = -Im(S_ij)
|
|
|
// k_ji = k_ij
|
|
|
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
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NY_IM] //S25 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NY_IM] //S34 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NY_IM] //S35 Re
|
|
|
-compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NY_RE] //S24 Im
|
|
|
-compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NY_RE] //S25 Im
|
|
|
-compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NY_RE] //S34 Im
|
|
|
-compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NY_RE]) //S35 Im
|
|
|
+ nz * (compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12]*k_f0[i][K24_NZ_IM] //S24 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14]*k_f0[i][K25_NZ_IM] //S25 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17]*k_f0[i][K34_NZ_IM] //S34 Re
|
|
|
+compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19]*k_f0[i][K35_NZ_IM] //S35 Re
|
|
|
-compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13]*k_f0[i][K24_NZ_RE] //S24 Im
|
|
|
-compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15]*k_f0[i][K25_NZ_RE] //S25 Im
|
|
|
-compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18]*k_f0[i][K34_NZ_RE] //S34 Im
|
|
|
-compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20]*k_f0[i][K35_NZ_RE]);//S35 Im
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("n_cross_e_scal_b_re : %16.8e\n",n_cross_e_scal_b_re);
|
|
|
printf("n_cross_e_scal_b_im : %16.8e\n",n_cross_e_scal_b_im);
|
|
|
#endif
|
|
|
// vphi = n_cross_e_scal_b_re / bx_bx_star => sign(VPHI) = sign(n_cross_e_scal_b_re)
|
|
|
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
|
|
|
#ifdef LSB_FIRST_TCH
|
|
|
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)
|
|
|
// Record it at the 8th bit position (from the right to the left)
|
|
|
// of lfr_bp1[i*NB_BYTES_BP1+3]
|
|
|
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|
|
|
|
#endif
|
|
|
#ifdef MSB_FIRST_TCH
|
|
|
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)
|
|
|
// Record it at the 8th bit position (from the right to the left)
|
|
|
// of lfr_bp1[i*NB_BYTES_BP1+3]
|
|
|
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|
|
|
|
#endif
|
|
|
vphi = n_cross_e_scal_b_re / bx_bx_star; // Compute |VPHI|
|
|
|
|
|
|
significand = frexpf(vphi/2, &exponent); // 0.5 <= significand < 1
|
|
|
// vphi/2 = significand * 2^exponent
|
|
|
// The division by 2 is to ensure that max value <= 2^30 (rough estimate)
|
|
|
// Should be reconsidered by taking into account the k-coefficients ...
|
|
|
|
|
|
if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
|
|
|
exponent = expmax;
|
|
|
significand = 1.0; // max value that can be recorded
|
|
|
}
|
|
|
if (significand == 0) {// in that case exponent == 0 too
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("|VPHI| / 2 : %16.8e\n",vphi/2);
|
|
|
printf("significand : %16.8e\n",significand);
|
|
|
printf("exponent : %d\n" ,exponent);
|
|
|
#endif
|
|
|
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
|
|
|
// where just the first 3 bits are used (0, ..., 7)
|
|
|
tmp_uint8 = (uint8_t) (exponent-expmin); // Shift and cast into a 8-bit uint8_t where
|
|
|
// just the first 5 bits are used (0, ..., 2^5-1)
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp1[i*NB_BYTES_BP1+8] for VPHI significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+8]);
|
|
|
printf("tmp_uint8 for VPHI exponent : %d\n",tmp_uint8);
|
|
|
#endif
|
|
|
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
|
|
|
// with lfr_bp1[i*NB_BYTES_BP1+8]
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp1[i*NB_BYTES_BP1+8] for VPHI exponent + significand : %u\n",lfr_bp1[i*NB_BYTES_BP1+8]);
|
|
|
printf("lfr_bp1[i*NB_BYTES_BP1+3] for VPHI sign + PSDB 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+3]);
|
|
|
#endif
|
|
|
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
|
|
|
#ifdef LSB_FIRST_TCH
|
|
|
pt_uint8[3] = pt_uint8[3] & 0x7f; // Make n_cross_e_scal_b_im be positive in any case: |ImaSX|
|
|
|
#endif
|
|
|
#ifdef MSB_FIRST_TCH
|
|
|
pt_uint8[0] = pt_uint8[0] & 0x7f; // Make n_cross_e_scal_b_im be positive in any case: |ImaSX|
|
|
|
#endif
|
|
|
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
|
|
|
// an unsigned 8-bit char with 01000000; otherwise with null.
|
|
|
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
|
|
|
// to the left) of lfr_bp1[i*NB_BYTES_BP1+3], by simple logical addition.
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("|n_cross_e_scal_b_im| : %16.8e\n",n_cross_e_scal_b_im);
|
|
|
printf("|n_cross_e_scal_b_im|/bx_bx_star/2: %16.8e\n",n_cross_e_scal_b_im/bx_bx_star/2);
|
|
|
printf("ArgNEBX sign : %u\n",tmp_uint8);
|
|
|
printf("lfr_bp1[i*NB_BYTES_BP1+3] for VPHI & ArgNEBX signs + PSDB 'exponent' : %u\n",lfr_bp1[i*NB_BYTES_BP1+3]);
|
|
|
#endif
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void BP2_set( float * compressed_spec_mat, uint8_t nb_bins_compressed_spec_mat, uint8_t * lfr_bp2 )
|
|
|
{
|
|
|
int i, exponent;
|
|
|
float aux, significand, cross_re, cross_im;
|
|
|
int8_t nbitexp, nbitsig, expmin, expmax; // 8 bits
|
|
|
int16_t rangesig; // 16 bits
|
|
|
uint16_t autocor, tmp_uint16; // 16 bits
|
|
|
uint16_t *pt_u_short_int; // pointer on unsigned 16-bit words
|
|
|
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("BP2 : \n");
|
|
|
printf("Number of bins: %d\n", nb_bins_compressed_spec_mat);
|
|
|
#endif
|
|
|
|
|
|
// For floating point data to be recorded on 16-bit words :
|
|
|
nbitexp = 6; // number of bits for the exponent
|
|
|
nbitsig = 16 - nbitexp; // number of bits for the significand
|
|
|
rangesig = (1 << nbitsig)-1; // == 2^nbitsig - 1
|
|
|
expmax = 32;
|
|
|
expmin = expmax - (1 << nbitexp) + 1;
|
|
|
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("nbitexp : %d, nbitsig : %d, rangesig : %d\n", nbitexp, nbitsig, rangesig);
|
|
|
printf("expmin : %d, expmax : %d\n", expmin, expmax);
|
|
|
#endif
|
|
|
|
|
|
for(i = 0; i<nb_bins_compressed_spec_mat; i++){
|
|
|
//==============================================
|
|
|
// BP2 normalized cross correlations == PA_LFR_SC_BP2_CROSS_F0 == 10 * (8+8) bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_RE_0_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_IM_0_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_RE_1_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_IM_1_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_RE_2_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_IM_2_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_RE_3_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_IM_3_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_RE_4_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_IM_4_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_RE_5_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_IM_5_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_RE_6_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_IM_6_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_RE_7_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_IM_7_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_RE_8_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_IM_8_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_RE_9_F0 == 8 bits
|
|
|
// == PA_LFR_SC_BP2_CROSS_IM_9_F0 == 8 bits
|
|
|
// S12
|
|
|
aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]);
|
|
|
cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+1] / aux;
|
|
|
cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+2] / aux;
|
|
|
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
|
|
|
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
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("\nBin number: %d\n", i);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+10] for cross12_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+10]);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+20] for cross12_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+20]);
|
|
|
#endif
|
|
|
// S13
|
|
|
aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
|
|
|
cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+3] / aux;
|
|
|
cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+4] / aux;
|
|
|
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
|
|
|
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
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+11] for cross13_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+11]);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+21] for cross13_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+21]);
|
|
|
#endif
|
|
|
// S14
|
|
|
aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
|
|
|
cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+5] / aux;
|
|
|
cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+6] / aux;
|
|
|
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
|
|
|
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
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+12] for cross14_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+12]);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+22] for cross14_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+22]);
|
|
|
#endif
|
|
|
// S15
|
|
|
aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
|
|
|
cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+7] / aux;
|
|
|
cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+8] / aux;
|
|
|
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
|
|
|
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
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+13] for cross15_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+13]);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+23] for cross15_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+23]);
|
|
|
#endif
|
|
|
// S23
|
|
|
aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
|
|
|
cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+10] / aux;
|
|
|
cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+11] / aux;
|
|
|
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
|
|
|
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
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+14] for cross23_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+14]);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+24] for cross23_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+24]);
|
|
|
#endif
|
|
|
// S24
|
|
|
aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
|
|
|
cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+12] / aux;
|
|
|
cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+13] / aux;
|
|
|
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
|
|
|
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
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+15] for cross24_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+15]);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+25] for cross24_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+25]);
|
|
|
#endif
|
|
|
// S25
|
|
|
aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
|
|
|
cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+14] / aux;
|
|
|
cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+15] / aux;
|
|
|
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
|
|
|
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
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+16] for cross25_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+16]);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+26] for cross25_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+26]);
|
|
|
#endif
|
|
|
// S34
|
|
|
aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
|
|
|
cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+17] / aux;
|
|
|
cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+18] / aux;
|
|
|
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
|
|
|
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
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+17] for cross34_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+17]);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+27] for cross34_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+27]);
|
|
|
#endif
|
|
|
// S35
|
|
|
aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
|
|
|
cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+19] / aux;
|
|
|
cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+20] / aux;
|
|
|
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
|
|
|
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
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+18] for cross35_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+18]);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+28] for cross35_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+28]);
|
|
|
#endif
|
|
|
// S45
|
|
|
aux = sqrt(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]*compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
|
|
|
cross_re = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+22] / aux;
|
|
|
cross_im = compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+23] / aux;
|
|
|
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
|
|
|
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
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+19] for cross45_re (%16.8e) : %.3u\n",cross_re, lfr_bp2[i*NB_BYTES_BP2+19]);
|
|
|
printf("lfr_bp2[i*NB_BYTES_BP2+29] for cross45_im (%16.8e) : %.3u\n",cross_im, lfr_bp2[i*NB_BYTES_BP2+29]);
|
|
|
#endif
|
|
|
//==============================================
|
|
|
// BP2 auto correlations == PA_LFR_SC_BP2_AUTO_F0 == 5*16 bits = 5*[6 bits (exponent) + 10 bits (significand)]
|
|
|
// == PA_LFR_SC_BP2_AUTO_A0_F0 == 16 bits
|
|
|
// == PA_LFR_SC_BP2_AUTO_A1_F0 == 16 bits
|
|
|
// == PA_LFR_SC_BP2_AUTO_A2_F0 == 16 bits
|
|
|
// == PA_LFR_SC_BP2_AUTO_A3_F0 == 16 bits
|
|
|
// == PA_LFR_SC_BP2_AUTO_A4_F0 == 16 bits
|
|
|
// S11
|
|
|
significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX], &exponent); // 0.5 <= significand < 1
|
|
|
// S11 = significand * 2^exponent
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("S11 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX]);
|
|
|
printf("significand : %16.8e\n",significand);
|
|
|
printf("exponent : %d\n" ,exponent);
|
|
|
#endif
|
|
|
if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
|
|
|
exponent = expmax;
|
|
|
significand = 1.0; // max value that can be recorded
|
|
|
}
|
|
|
if (significand == 0) {// in that case exponent == 0 too
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
|
|
|
autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
|
|
|
// where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
|
|
|
tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
|
|
|
// where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
|
|
|
pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+0]; // Affect an uint16_t pointer with the
|
|
|
// adress where the 16-bit word result will be stored
|
|
|
*pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
|
|
|
// left place of the significand bits (nbitsig), making
|
|
|
// the 16-bit word to be recorded, and record it using the pointer
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("autocor for S11 significand : %u\n",autocor );
|
|
|
printf("tmp_uint8 for S11 exponent : %u\n",tmp_uint16 );
|
|
|
printf("*pt_u_short_int for S11 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
|
|
|
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]);
|
|
|
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]);
|
|
|
#endif
|
|
|
// S22
|
|
|
significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9], &exponent); // 0.5 <= significand < 1
|
|
|
// S22 = significand * 2^exponent
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("S22 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+9]);
|
|
|
printf("significand : %16.8e\n",significand);
|
|
|
printf("exponent : %d\n" ,exponent);
|
|
|
#endif
|
|
|
if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
|
|
|
exponent = expmax;
|
|
|
significand = 1.0; // max value that can be recorded
|
|
|
}
|
|
|
if (significand == 0) {// in that case exponent == 0 too
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
|
|
|
autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
|
|
|
// where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
|
|
|
tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
|
|
|
// where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
|
|
|
pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+2]; // Affect an uint16_t pointer with the
|
|
|
// adress where the 16-bit word result will be stored
|
|
|
*pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
|
|
|
// left place of the significand bits (nbitsig), making
|
|
|
// the 16-bit word to be recorded, and record it using the pointer
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("autocor for S22 significand : %d\n",autocor );
|
|
|
printf("tmp_uint8 for S22 exponent : %d\n",tmp_uint16 );
|
|
|
printf("*pt_u_short_int for S22 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
|
|
|
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]);
|
|
|
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]);
|
|
|
#endif
|
|
|
// S33
|
|
|
significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16], &exponent); // 0.5 <= significand < 1
|
|
|
// S33 = significand * 2^exponent
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("S33 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+16]);
|
|
|
printf("significand : %16.8e\n",significand);
|
|
|
printf("exponent : %d\n" ,exponent);
|
|
|
#endif
|
|
|
if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
|
|
|
exponent = expmax;
|
|
|
significand = 1.0; // max value that can be recorded
|
|
|
}
|
|
|
if (significand == 0) {// in that case exponent == 0 too
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
|
|
|
autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
|
|
|
// where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
|
|
|
tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
|
|
|
// where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
|
|
|
pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+4]; // Affect an uint16_t pointer with the
|
|
|
// adress where the 16-bit word result will be stored
|
|
|
*pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
|
|
|
// left place of the significand bits (nbitsig), making
|
|
|
// the 16-bit word to be recorded, and record it using the pointer
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("autocor for S33 significand : %d\n",autocor );
|
|
|
printf("tmp_uint8 for S33 exponent : %d\n",tmp_uint16 );
|
|
|
printf("*pt_u_short_int for S33 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
|
|
|
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]);
|
|
|
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]);
|
|
|
#endif
|
|
|
// S44
|
|
|
significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21], &exponent); // 0.5 <= significand < 1
|
|
|
// S44 = significand * 2^exponent
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("S44 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+21]);
|
|
|
printf("significand : %16.8e\n",significand);
|
|
|
printf("exponent : %d\n" ,exponent);
|
|
|
#endif
|
|
|
|
|
|
if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
|
|
|
exponent = expmax;
|
|
|
significand = 1.0; // max value that can be recorded
|
|
|
}
|
|
|
if (significand == 0) {// in that case exponent == 0 too
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
|
|
|
autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
|
|
|
// where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
|
|
|
tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
|
|
|
// where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
|
|
|
pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+6]; // Affect an uint16_t pointer with the
|
|
|
// adress where the 16-bit word result will be stored
|
|
|
*pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
|
|
|
// left place of the significand bits (nbitsig), making
|
|
|
// the 16-bit word to be recorded, and record it using the pointer
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("autocor for S44 significand : %d\n",autocor );
|
|
|
printf("tmp_uint8 for S44 exponent : %d\n",tmp_uint16 );
|
|
|
printf("*pt_u_short_int for S44 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
|
|
|
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]);
|
|
|
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]);
|
|
|
#endif
|
|
|
// S55
|
|
|
significand = frexpf(compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24], &exponent); // 0.5 <= significand < 1
|
|
|
// S55 = significand * 2^exponent
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("S55 : %16.8e\n",compressed_spec_mat[i*NB_VALUES_PER_SPECTRAL_MATRIX+24]);
|
|
|
printf("significand : %16.8e\n",significand);
|
|
|
printf("exponent : %d\n" ,exponent);
|
|
|
#endif
|
|
|
if (exponent < expmin) { // value should be >= 0.5 * 2^expmin
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
if (exponent > expmax) { // value should be < 0.5 * 2^(expmax+1)
|
|
|
exponent = expmax;
|
|
|
significand = 1.0; // max value that can be recorded
|
|
|
}
|
|
|
if (significand == 0) {// in that case exponent == 0 too
|
|
|
exponent = expmin;
|
|
|
significand = 0.5; // min value that can be recorded
|
|
|
}
|
|
|
|
|
|
autocor = (uint16_t) ((significand*2-1)*rangesig + 0.5); // Shift and cast into a 16-bit unsigned int with rounding
|
|
|
// where just the first nbitsig bits are used (0, ..., 2^nbitsig-1)
|
|
|
tmp_uint16 = (uint16_t) (exponent-expmin); // Shift and cast into a 16-bit unsigned int
|
|
|
// where just the first nbitexp bits are used (0, ..., 2^nbitexp-1)
|
|
|
pt_u_short_int = (uint16_t*) &lfr_bp2[i*NB_BYTES_BP2+8]; // Affect an uint16_t pointer with the
|
|
|
// adress where the 16-bit word result will be stored
|
|
|
*pt_u_short_int = autocor | (tmp_uint16 << nbitsig); // Put the exponent bits (nbitexp) next to the
|
|
|
// left place of the significand bits (nbitsig), making
|
|
|
// the 16-bit word to be recorded, and record it using the pointer
|
|
|
#ifdef DEBUG_TCH
|
|
|
printf("autocor for S55 significand : %d\n",autocor );
|
|
|
printf("tmp_uint8 for S55 exponent : %d\n",tmp_uint16 );
|
|
|
printf("*pt_u_short_int for S55 exponent + significand : %.3d or %x\n",*pt_u_short_int, *pt_u_short_int);
|
|
|
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]);
|
|
|
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]);
|
|
|
#endif
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
