OpenBLAS/kernel/generic/zimatcopy_rt.c

/***************************************************************************
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#include "common.h"

/*****************************************************
 * 2015-09-07 grisuthedragon 
******************************************************/

int CNAME(BLASLONG rows, BLASLONG cols, FLOAT alpha_r, FLOAT alpha_i, FLOAT *a, BLASLONG lda)
{
	BLASLONG i,j,ia,ib;
	FLOAT *aptr,*bptr;
    FLOAT t0, t1; 

	if ( rows <= 0     )  return(0);
	if ( cols <= 0     )  return(0);

    aptr = a;
	lda *= 2;
	ib = 0;
	for ( i=0; i<rows ; i++ )
	{
		bptr = &a[ib+i*lda];
		ia = 2*i;
        
        /* Diagonal Element  */
        t0 = bptr[0]; 
        t1 = bptr[1]; 
		bptr[0]   = alpha_r * t0   - alpha_i * t1;
		bptr[1]   = alpha_r * t1   + alpha_i * t0;

        bptr +=lda; 
        ia += 2; 

		for(j=i+1; j<cols; j++)
		{
            t0 = bptr[0]; 
            t1 = bptr[1]; 
			bptr[0]   = alpha_r * aptr[ia]   - alpha_i * aptr[ia+1];
			bptr[1]   = alpha_r * aptr[ia+1] + alpha_i * aptr[ia];
    		aptr[ia]   = alpha_r * t0   - alpha_i * t1;
			aptr[ia+1] = alpha_r * t1   + alpha_i * t0;

			ia += 2;
			bptr += lda;
		}
		aptr += lda;
		ib += 2;
	}

	return(0);

}