OpenBLAS/kernel/riscv64/trsm_uncopy_rvv_v1.c

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#include <stdio.h>
#include "common.h"

#if !defined(DOUBLE)
#define VSETVL(n)               __riscv_vsetvl_e32m2(n)
#define FLOAT_V_T               vfloat32m2_t
#define VLEV_FLOAT              __riscv_vle32_v_f32m2
#define VSEV_FLOAT              __riscv_vse32_v_f32m2
#define VSEV_FLOAT_M            __riscv_vse32_v_f32m2_m
#define VLSEV_FLOAT             __riscv_vlse32_v_f32m2
#define VBOOL_T                 vbool16_t
#define UINT_V_T                vuint32m2_t
#define VID_V_UINT              __riscv_vid_v_u32m2
#define VMSGTU_VX_UINT          __riscv_vmsgtu_vx_u32m2_b16
#else
#define VSETVL(n)               __riscv_vsetvl_e64m2(n)
#define FLOAT_V_T               vfloat64m2_t
#define VLEV_FLOAT              __riscv_vle64_v_f64m2
#define VSEV_FLOAT              __riscv_vse64_v_f64m2
#define VSEV_FLOAT_M            __riscv_vse64_v_f64m2_m
#define VLSEV_FLOAT             __riscv_vlse64_v_f64m2
#define VBOOL_T                 vbool32_t
#define UINT_V_T                vuint64m2_t
#define VID_V_UINT              __riscv_vid_v_u64m2
#define VMSGTU_VX_UINT          __riscv_vmsgtu_vx_u64m2_b32
#endif


#ifndef UNIT
#define INV(a) (ONE / (a))
#else
#define INV(a) (ONE)
#endif

// Optimizes the implementation in ../arm64/trsm_uncopy_sve.c

int CNAME(BLASLONG m, BLASLONG n, FLOAT *a, BLASLONG lda, BLASLONG offset, FLOAT *b){

    BLASLONG i, ii, jj, js;
    BLASLONG stride_lda = sizeof(FLOAT)*lda;

    FLOAT *ao;
    jj = offset;

    FLOAT_V_T va1;
    VBOOL_T vbool_cmp;
    UINT_V_T vindex;

    size_t vl;

    for (js = n; js > 0; js -= vl)
    {
        vl = VSETVL(js);
        ao = a;

        i = 0;
        ii = 0;
        for (i = 0; i < m;)
        {
            if (ii == jj) 
            {
                vindex  = VID_V_UINT(vl);
                for (unsigned int j = 0; j < vl; j++) 
                {
                    *(b + j) = INV(*(ao + j * lda));
                    va1 = VLSEV_FLOAT(ao, stride_lda, vl);
                    vbool_cmp = VMSGTU_VX_UINT(vindex, j, vl);
                    VSEV_FLOAT_M(vbool_cmp, b, va1, vl);
                    ao++;
                    b += vl;
                }
                i += vl;
                ii += vl;
            } 
            else
            {
                if (ii < jj) 
                {
                    va1 = VLSEV_FLOAT(ao, stride_lda, vl);
                    VSEV_FLOAT(b, va1, vl);
                }
                ao++;
                b += vl;
                i++;
                ii++;
            }
        } 

        a += vl * lda;
        jj += vl;
    }
    return 0;
}