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/* a few routines from a vector/matrix library */
#include "matlib.h"
void xpose(float *indata, long iRsiz, float *outdata, long oRsiz, long Nrows, long Ncols){
/* not in-place matrix transpose */
/* INPUTS */
/* *indata = input data array */
/* iRsiz = offset to between rows of input data array */
/* oRsiz = offset to between rows of output data array */
/* Nrows = number of rows in input data array */
/* Ncols = number of columns in input data array */
/* OUTPUTS */
/* *outdata = output data array */
float *irow; /* pointer to input row start */
float *ocol; /* pointer to output col start */
float *idata; /* pointer to input data */
float *odata; /* pointer to output data */
long RowCnt; /* row counter */
long ColCnt; /* col counter */
float T0; /* data storage */
float T1; /* data storage */
float T2; /* data storage */
float T3; /* data storage */
float T4; /* data storage */
float T5; /* data storage */
float T6; /* data storage */
float T7; /* data storage */
const long inRsizd1 = iRsiz;
const long inRsizd2 = 2*iRsiz;
const long inRsizd3 = inRsizd2+iRsiz;
const long inRsizd4 = 4*iRsiz;
const long inRsizd5 = inRsizd3+inRsizd2;
const long inRsizd6 = inRsizd4+inRsizd2;
const long inRsizd7 = inRsizd4+inRsizd3;
const long inRsizd8 = 8*iRsiz;
ocol = outdata;
irow = indata;
for (RowCnt=Nrows/8; RowCnt>0; RowCnt--){
idata = irow;
odata = ocol;
for (ColCnt=Ncols; ColCnt>0; ColCnt--){
T0 = *idata;
T1 = *(idata+inRsizd1);
T2 = *(idata+inRsizd2);
T3 = *(idata+inRsizd3);
T4 = *(idata+inRsizd4);
T5 = *(idata+inRsizd5);
T6 = *(idata+inRsizd6);
T7 = *(idata+inRsizd7);
*odata = T0;
*(odata+1) = T1;
*(odata+2) = T2;
*(odata+3) = T3;
*(odata+4) = T4;
*(odata+5) = T5;
*(odata+6) = T6;
*(odata+7) = T7;
idata++;
odata += oRsiz;
}
irow += inRsizd8;
ocol += 8;
}
if (Nrows%8 != 0){
for (ColCnt=Ncols; ColCnt>0; ColCnt--){
idata = irow++;
odata = ocol;
ocol += oRsiz;
for (RowCnt=Nrows%8; RowCnt>0; RowCnt--){
T0 = *idata;
*odata++ = T0;
idata += iRsiz;
}
}
}
}
void cxpose(float *indata, long iRsiz, float *outdata, long oRsiz, long Nrows, long Ncols){
/* not in-place complex float matrix transpose */
/* INPUTS */
/* *indata = input data array */
/* iRsiz = offset to between rows of input data array */
/* oRsiz = offset to between rows of output data array */
/* Nrows = number of rows in input data array */
/* Ncols = number of columns in input data array */
/* OUTPUTS */
/* *outdata = output data array */
float *irow; /* pointer to input row start */
float *ocol; /* pointer to output col start */
float *idata; /* pointer to input data */
float *odata; /* pointer to output data */
long RowCnt; /* row counter */
long ColCnt; /* col counter */
float T0r; /* data storage */
float T0i; /* data storage */
float T1r; /* data storage */
float T1i; /* data storage */
float T2r; /* data storage */
float T2i; /* data storage */
float T3r; /* data storage */
float T3i; /* data storage */
const long inRsizd1 = 2*iRsiz;
const long inRsizd1i = 2*iRsiz + 1;
const long inRsizd2 = 4*iRsiz;
const long inRsizd2i = 4*iRsiz + 1;
const long inRsizd3 = inRsizd2+inRsizd1;
const long inRsizd3i = inRsizd2+inRsizd1 + 1;
const long inRsizd4 = 8*iRsiz;
ocol = outdata;
irow = indata;
for (RowCnt=Nrows/4; RowCnt>0; RowCnt--){
idata = irow;
odata = ocol;
for (ColCnt=Ncols; ColCnt>0; ColCnt--){
T0r = *idata;
T0i = *(idata +1);
T1r = *(idata+inRsizd1);
T1i = *(idata+inRsizd1i);
T2r = *(idata+inRsizd2);
T2i = *(idata+inRsizd2i);
T3r = *(idata+inRsizd3);
T3i = *(idata+inRsizd3i);
*odata = T0r;
*(odata+1) = T0i;
*(odata+2) = T1r;
*(odata+3) = T1i;
*(odata+4) = T2r;
*(odata+5) = T2i;
*(odata+6) = T3r;
*(odata+7) = T3i;
idata+=2;
odata += 2*oRsiz;
}
irow += inRsizd4;
ocol += 8;
}
if (Nrows%4 != 0){
for (ColCnt=Ncols; ColCnt>0; ColCnt--){
idata = irow;
odata = ocol;
for (RowCnt=Nrows%4; RowCnt>0; RowCnt--){
T0r = *idata;
T0i = *(idata+1);
*odata = T0r;
*(odata+1) = T0i;
odata+=2;
idata += 2*iRsiz;
}
irow+=2;
ocol += 2*oRsiz;
}
}
}
void cvprod(float *a, float *b, float *out, long N){
/* complex vector product, can be in-place */
/* product of complex vector *a times complex vector *b */
/* INPUTS */
/* N vector length */
/* *a complex vector length N complex numbers */
/* *b complex vector length N complex numbers */
/* OUTPUTS */
/* *out complex vector length N */
long OutCnt; /* output counter */
float A0R; /* A storage */
float A0I; /* A storage */
float A1R; /* A storage */
float A1I; /* A storage */
float A2R; /* A storage */
float A2I; /* A storage */
float A3R; /* A storage */
float A3I; /* A storage */
float B0R; /* B storage */
float B0I; /* B storage */
float B1R; /* B storage */
float B1I; /* B storage */
float B2R; /* B storage */
float B2I; /* B storage */
float B3R; /* B storage */
float B3I; /* B storage */
float T0R; /* TMP storage */
float T0I; /* TMP storage */
float T1R; /* TMP storage */
float T1I; /* TMP storage */
float T2R; /* TMP storage */
float T2I; /* TMP storage */
float T3R; /* TMP storage */
float T3I; /* TMP storage */
if (N>=4){
A0R = *a;
B0R = *b;
A0I = *(a +1);
B0I = *(b +1);
A1R = *(a +2);
B1R = *(b +2);
A1I = *(a +3);
B1I = *(b +3);
A2R = *(a +4);
B2R = *(b +4);
A2I = *(a +5);
B2I = *(b +5);
A3R = *(a +6);
B3R = *(b +6);
A3I = *(a +7);
B3I = *(b +7);
T0R = A0R * B0R;
T0I = (A0R * B0I);
T1R = A1R * B1R;
T1I = (A1R * B1I);
T2R = A2R * B2R;
T2I = (A2R * B2I);
T3R = A3R * B3R;
T3I = (A3R * B3I);
T0R -= (A0I * B0I);
T0I = A0I * B0R + T0I;
T1R -= (A1I * B1I);
T1I = A1I * B1R + T1I;
T2R -= (A2I * B2I);
T2I = A2I * B2R + T2I;
T3R -= (A3I * B3I);
T3I = A3I * B3R + T3I;
for (OutCnt=N/4-1; OutCnt > 0; OutCnt--){
a += 8;
b += 8;
A0R = *a;
B0R = *b;
A0I = *(a +1);
B0I = *(b +1);
A1R = *(a +2);
B1R = *(b +2);
A1I = *(a +3);
B1I = *(b +3);
A2R = *(a +4);
B2R = *(b +4);
A2I = *(a +5);
B2I = *(b +5);
A3R = *(a +6);
B3R = *(b +6);
A3I = *(a +7);
B3I = *(b +7);
*out = T0R;
*(out +1) = T0I;
*(out +2) = T1R;
*(out +3) = T1I;
*(out +4) = T2R;
*(out +5) = T2I;
*(out +6) = T3R;
*(out +7) = T3I;
T0R = A0R * B0R;
T0I = (A0R * B0I);
T1R = A1R * B1R;
T1I = (A1R * B1I);
T2R = A2R * B2R;
T2I = (A2R * B2I);
T3R = A3R * B3R;
T3I = (A3R * B3I);
T0R -= (A0I * B0I);
T0I = A0I * B0R + T0I;
T1R -= (A1I * B1I);
T1I = A1I * B1R + T1I;
T2R -= (A2I * B2I);
T2I = A2I * B2R + T2I;
T3R -= (A3I * B3I);
T3I = A3I * B3R + T3I;
out += 8;
}
a += 8;
b += 8;
*out = T0R;
*(out +1) = T0I;
*(out +2) = T1R;
*(out +3) = T1I;
*(out +4) = T2R;
*(out +5) = T2I;
*(out +6) = T3R;
*(out +7) = T3I;
out += 8;
}
for (OutCnt=N%4; OutCnt > 0; OutCnt--){
A0R = *a++;
B0R = *b++;
A0I = *a++;
B0I = *b++;
T0R = A0R * B0R;
T0I = (A0R * B0I);
T0R -= (A0I * B0I);
T0I = A0I * B0R + T0I;
*out++ = T0R;
*out++ = T0I;
}
}
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