trti2_U.c

/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin.           */
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/*********************************************************************/

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

#ifdef UNIT
#define TRMV	TRMV_NUU
#else
#define TRMV	TRMV_NUN
#endif

blasint CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG myid) {

  BLASLONG  n, lda;
  FLOAT *a;

  FLOAT ajj;
  BLASLONG j;

  n      = args -> n;
  a      = (FLOAT *)args -> a;
  lda    = args -> lda;

  if (range_n) {
    n      = range_n[1] - range_n[0];
    a     += range_n[0] * (lda + 1) * COMPSIZE;
  }

  for (j = 0; j < n; j++) {

    ajj =  ONE;

#ifndef UNIT
    ajj /= *(a + j + j * lda);
    *(a + j + j * lda) = ajj;
#endif

    TRMV  (j,
	   a          , lda,
	   a + j * lda, 1,
	   sb);

    SCAL_K(j, 0, 0,
	   -ajj,
	   a + j * lda, 1,
	   NULL, 0, NULL, 0);

  }

  return 0;
}