OpenBLAS/kernel/riscv64/zomatcopy_cn_rvv.c

/***************************************************************************
Copyright (c) 2013, The OpenBLAS Project
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#include "common.h"
#include <stdio.h>

#if defined(DOUBLE)
#define VLSEG2_FLOAT		__riscv_vlseg2e64_v_f64m4x2
#define VSSEG2_FLOAT		__riscv_vsseg2e64_v_f64m4x2
#define VSETVL              __riscv_vsetvl_e64m4
#define FLOAT_VX2_T         vfloat64m4x2_t
#define VGET_VX2			__riscv_vget_v_f64m4x2_f64m4
#define VSET_VX2			__riscv_vset_v_f64m4_f64m4x2
#define FLOAT_V             vfloat64m4_t
#define VFMULVF_FLOAT       __riscv_vfmul_vf_f64m4
#define VFMACCVF_FLOAT      __riscv_vfmacc_vf_f64m4
#else
#define VLSEG2_FLOAT		__riscv_vlseg2e32_v_f32m4x2
#define VSSEG2_FLOAT		__riscv_vsseg2e32_v_f32m4x2
#define VSETVL              __riscv_vsetvl_e32m4
#define FLOAT_VX2_T         vfloat32m4x2_t
#define VGET_VX2			__riscv_vget_v_f32m4x2_f32m4
#define VSET_VX2			__riscv_vset_v_f32m4_f32m4x2
#define FLOAT_V             vfloat32m4_t
#define VFMULVF_FLOAT       __riscv_vfmul_vf_f32m4
#define VFMACCVF_FLOAT      __riscv_vfmacc_vf_f32m4
#endif

int CNAME(BLASLONG rows, BLASLONG cols, FLOAT alpha_r, FLOAT alpha_i, FLOAT *a, BLASLONG lda, FLOAT *b, BLASLONG ldb)
{
	BLASLONG i,j,ia;
	FLOAT *aptr,*bptr;
	size_t vl;
	FLOAT_VX2_T va, vb;
	FLOAT_V va0, va1, vb0, vb1, vtemp;

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

	aptr = a;
	bptr = b;

	lda *= 2;
	ldb *= 2;

	for ( i=0; i<cols ; i++ )
	{
		ia = 0;

		for(j=0; j<rows; j+=vl)
		{
			vl = VSETVL(rows - j);
			va = VLSEG2_FLOAT(aptr + ia, vl);

			va0 = VGET_VX2(va, 0);
			va1 = VGET_VX2(va, 1);

			vb0 = VFMULVF_FLOAT(va0, alpha_r, vl);
			vb0 = VFMACCVF_FLOAT(vb0, -alpha_i, va1, vl);

			vb1 = VFMULVF_FLOAT(va0, alpha_i, vl);
			vb1 = VFMACCVF_FLOAT(vb1, alpha_r, va1, vl);

			vb = VSET_VX2(vb, 0, vb0);
			vb = VSET_VX2(vb, 1, vb1);

			VSSEG2_FLOAT(bptr + ia, vb, vl);

			ia += vl * 2;
		}
		aptr += lda;
		bptr += ldb;
	}

	return(0);
}