OpenBLAS/interface/imatcopy.c

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/***********************************************************
 * 2014-06-10 Saar
 * 2015-09-07 grisuthedragon 
***********************************************************/

#include <stdio.h>
#include <stdlib.h>
#include "common.h"
#ifdef FUNCTION_PROFILE
#include "functable.h"
#endif

#if defined(DOUBLE)
#define ERROR_NAME "DIMATCOPY"
#else
#define ERROR_NAME "SIMATCOPY"
#endif

#define BlasRowMajor 0
#define BlasColMajor 1
#define BlasNoTrans  0
#define BlasTrans    1

#undef malloc
#undef free

/* Enables the New IMATCOPY code with inplace operation if lda == ldb   */
#define NEW_IMATCOPY

#ifndef CBLAS
void NAME( char* ORDER, char* TRANS, blasint *rows, blasint *cols, FLOAT *alpha, FLOAT *a, blasint *lda, blasint *ldb)
{

	char Order, Trans;
	int order=-1,trans=-1;
	blasint info = -1;
	FLOAT *b;
	size_t msize;

	Order = *ORDER;
	Trans = *TRANS;

	TOUPPER(Order);
	TOUPPER(Trans);

	if ( Order == 'C' ) order = BlasColMajor;
	if ( Order == 'R' ) order = BlasRowMajor;
	if ( Trans == 'N' ) trans = BlasNoTrans;
	if ( Trans == 'R' ) trans = BlasNoTrans;
	if ( Trans == 'T' ) trans = BlasTrans;
	if ( Trans == 'C' ) trans = BlasTrans;
#else 
void CNAME( enum CBLAS_ORDER CORDER, enum CBLAS_TRANSPOSE CTRANS, blasint crows, blasint ccols, FLOAT calpha, FLOAT *a, blasint clda, blasint cldb)
{
	int order=-1,trans=-1;
	blasint info = -1;
	FLOAT *b;
	size_t msize;
	blasint *lda, *ldb, *rows, *cols; 
	FLOAT *alpha; 

	if ( CORDER == CblasColMajor) order = BlasColMajor; 
	if ( CORDER == CblasRowMajor) order = BlasRowMajor; 
	if ( CTRANS == CblasNoTrans || CTRANS == CblasConjNoTrans) trans = BlasNoTrans; 
	if ( CTRANS == CblasTrans   || CTRANS == CblasConjTrans  ) trans = BlasTrans; 

	rows = &crows; 
	cols = &ccols; 
	alpha = &calpha; 
	lda = &clda; 
	ldb = &cldb; 	
#endif 

	if ( order == BlasColMajor)
	{
        	if ( trans == BlasNoTrans  &&  *ldb < *rows ) info = 8;
        	if ( trans == BlasTrans    &&  *ldb < *cols ) info = 8;
	}
	if ( order == BlasRowMajor)
	{
        	if ( trans == BlasNoTrans  &&  *ldb < *cols ) info = 8;
        	if ( trans == BlasTrans    &&  *ldb < *rows ) info = 8;
	}

	if ( order == BlasColMajor &&  *lda < *rows ) info = 7;
	if ( order == BlasRowMajor &&  *lda < *cols ) info = 7;
	if ( *cols <= 0 ) info = 4;
	if ( *rows <= 0 ) info = 3;
	if ( trans < 0  ) info = 2;
	if ( order < 0  ) info = 1;

	if (info >= 0) {
    		BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));
    		return;
  	}

#ifdef NEW_IMATCOPY
    if ( *lda == *ldb ) {
        if ( order == BlasColMajor )
        {
            if ( trans == BlasNoTrans )
            {
                IMATCOPY_K_CN(*rows, *cols, *alpha, a, *lda );
                return;
            }
            else if ( *rows == *cols )
            {
                IMATCOPY_K_CT(*rows, *cols, *alpha, a, *lda );
                return;
            }
        }
        else
        {
            if ( trans == BlasNoTrans )
            {
                IMATCOPY_K_RN(*rows, *cols, *alpha, a, *lda );
                return;
            }
            else if ( *rows == *cols )
            {
                IMATCOPY_K_RT(*rows, *cols, *alpha, a, *lda );
                return;
            }
        }
    }
#endif

	msize = (size_t)(*rows) * (*cols) * sizeof(FLOAT);

	b = malloc(msize);
	if ( b == NULL )
	{
		printf("Memory alloc failed in imatcopy\n");
		exit(1);
	}

	if ( order == BlasColMajor )
	{
		if ( trans == BlasNoTrans )
		{
			OMATCOPY_K_CN(*rows, *cols, *alpha, a, *lda, b, *rows );
			OMATCOPY_K_CN(*rows, *cols, (FLOAT) 1.0 , b, *rows, a, *ldb );
		}
		else
		{
			OMATCOPY_K_CT(*rows, *cols, *alpha, a, *lda, b, *cols );
			OMATCOPY_K_CN(*cols, *rows, (FLOAT) 1.0, b, *cols, a, *ldb );
		}
	}
	else
	{
		if ( trans == BlasNoTrans )
		{
			OMATCOPY_K_RN(*rows, *cols, *alpha, a, *lda, b, *cols );
			OMATCOPY_K_RN(*rows, *cols, (FLOAT) 1.0, b, *cols, a, *ldb );
		}
		else
		{
			OMATCOPY_K_RT(*rows, *cols, *alpha, a, *lda, b, *rows );
			OMATCOPY_K_RN(*cols, *rows, (FLOAT) 1.0, b, *rows, a, *ldb );
		}
	}

	free(b);
	return;

}