OpenBLAS/kernel/power/zaxpy_power10.c

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#include "common.h"


#if defined(__VEC__) || defined(__ALTIVEC__)
#include "zaxpy_microk_power10.c"
#endif


#ifndef HAVE_KERNEL_4

static void zaxpy_kernel_4(BLASLONG n, FLOAT *x, FLOAT *y, FLOAT da_r,FLOAT da_i)
{
	BLASLONG register i  = 0;
	BLASLONG register ix = 0;
 
	

	while(i < n)
        {
#if !defined(CONJ)
              y[ix]   += ( da_r * x[ix]   - da_i * x[ix+1] ) ;
              y[ix+1] += ( da_r * x[ix+1] + da_i * x[ix]   ) ;
              y[ix+2] += ( da_r * x[ix+2] - da_i * x[ix+3] ) ;
              y[ix+3] += ( da_r * x[ix+3] + da_i * x[ix+2] ) ;
#else
              y[ix]   += ( da_r * x[ix]   + da_i * x[ix+1] ) ;
              y[ix+1] -= ( da_r * x[ix+1] - da_i * x[ix]   ) ;
              y[ix+2] += ( da_r * x[ix+2] + da_i * x[ix+3] ) ;
              y[ix+3] -= ( da_r * x[ix+3] - da_i * x[ix+2] ) ;
#endif

              ix+=4 ;
              i+=2 ;

       }

}

#endif

int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da_r, FLOAT da_i, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *dummy, BLASLONG dummy2)
{
	BLASLONG i=0;
	BLASLONG ix=0,iy=0;

	if ( n <= 0 )  return(0);

	if ( (inc_x == 1) && (inc_y == 1) )
	{

		BLASLONG n1 = n & -16;

		if ( n1 )
		{
			zaxpy_kernel_4 (n1, x, y, da_r, da_i);
			ix = 2 * n1;
		}
		i = n1;
		while(i < n)
		{
#if !defined(CONJ)
                	y[ix]   += ( da_r * x[ix]   - da_i * x[ix+1] ) ;
                	y[ix+1] += ( da_r * x[ix+1] + da_i * x[ix]   ) ;
#else
                	y[ix]   += ( da_r * x[ix]   + da_i * x[ix+1] ) ;
                	y[ix+1] -= ( da_r * x[ix+1] - da_i * x[ix]   ) ;
#endif
			i++ ;
			ix += 2;

		}
		return(0);


	}

	inc_x *=2;
	inc_y *=2;

	while(i < n)
	{

#if !defined(CONJ)
                y[iy]   += ( da_r * x[ix]   - da_i * x[ix+1] ) ;
                y[iy+1] += ( da_r * x[ix+1] + da_i * x[ix]   ) ;
#else
                y[iy]   += ( da_r * x[ix]   + da_i * x[ix+1] ) ;
                y[iy+1] -= ( da_r * x[ix+1] - da_i * x[ix]   ) ;
#endif
		ix  += inc_x ;
		iy  += inc_y ;
		i++ ;

	}
	return(0);

}