OpenBLAS/kernel/arm64/trsm_uncopy_sve.c

/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin.           */
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#include <stdio.h>
#include "common.h"
#include "arm_sve.h"

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

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

  BLASLONG i, ii, jj;

  FLOAT *ao;

  jj = offset;
#ifdef DOUBLE
  int64_t js = 0;
  svint64_t index = svindex_s64(0LL, lda);
  svbool_t pn = svwhilelt_b64(js, n);
  int n_active = svcntp_b64(svptrue_b64(), pn);
#else
  int32_t N = n;
  int32_t js = 0;
  svint32_t index = svindex_s32(0, lda);
  svbool_t pn = svwhilelt_b32(js, N);
  int n_active = svcntp_b32(svptrue_b32(), pn);
#endif
  do {

    ao = a;

    i = 0;
    ii = 0;
    do {

      if (ii == jj) {
        for (int j = 0; j < n_active; j++) {
          *(b + j * n_active + j) = INV(*(ao + j * lda + j));
          for (int k = j+1; k < n_active; k++) {
            *(b + j * n_active + k) = *(ao + k * lda + j);
          }
        }
        ao += n_active;
        b += n_active * n_active;
        i += n_active;
        ii += n_active;
      } else {
        if (ii < jj) {
#ifdef DOUBLE
          svfloat64_t aj_vec = svld1_gather_index(pn, ao, index);
#else
          svfloat32_t aj_vec = svld1_gather_index(pn, ao, index);
#endif
          svst1(pn, b, aj_vec);
        }
        ao++;
        b += n_active;
        i++;
        ii++;
      }
    } while (i < m);


    a += n_active * lda;
    jj += n_active;

    js += n_active;
#ifdef DOUBLE
    pn = svwhilelt_b64(js, n);
    n_active = svcntp_b64(svptrue_b64(), pn);
  } while (svptest_any(svptrue_b64(), pn));
#else
    pn = svwhilelt_b32(js, N);
    n_active = svcntp_b32(svptrue_b32(), pn);
  } while (svptest_any(svptrue_b32(), pn));
#endif

return 0;
}