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/*********************
This matrix transpose is in a seperate file because it should always be double precision.
*********************/
#include "dxpose.h"
void dxpose(xdouble *indata, long iRsiz, xdouble *outdata, long oRsiz, long Nrows, long Ncols){
/* not in-place double precision 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 */
xdouble *irow; /* pointer to input row start */
xdouble *ocol; /* pointer to output col start */
xdouble *idata; /* pointer to input data */
xdouble *odata; /* pointer to output data */
long RowCnt; /* row counter */
long ColCnt; /* col counter */
xdouble T0; /* data storage */
xdouble T1; /* data storage */
xdouble T2; /* data storage */
xdouble T3; /* data storage */
xdouble T4; /* data storage */
xdouble T5; /* data storage */
xdouble T6; /* data storage */
xdouble 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;
}
}
}
}
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