/*********************************************************************/

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

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/* Redistribution and use in source and binary forms, with or        */

/* without modification, are permitted provided that the following   */

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/*   2. Redistributions in binary form must reproduce the above      */

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/*    THIS  SOFTWARE IS PROVIDED  BY THE  UNIVERSITY OF  TEXAS AT    */

/*    AUSTIN  ``AS IS''  AND ANY  EXPRESS OR  IMPLIED WARRANTIES,    */

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/* interpreted as representing official policies, either expressed   */

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/*********************************************************************/

#include <stdio.h></stdio.h>

#include "common.h"

#ifdef UNIT

#define ZTRMV	ZTRMV_NUU

#else

#define ZTRMV	ZTRMV_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_r, ajj_i;

#ifndef UNIT

  FLOAT ratio, den;

#endif

  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_r =  ONE;

    ajj_i =  ZERO;

#ifndef UNIT

    ajj_r = *(a + (j + j * lda) * COMPSIZE + 0);

    ajj_i = *(a + (j + j * lda) * COMPSIZE + 1);

  if (fabs(ajj_r) >= fabs(ajj_i)){

    ratio = ajj_i / ajj_r;

    den   = 1. / (ajj_r * ( 1 + ratio * ratio));

    ajj_r =  den;

    ajj_i = -ratio * den;

  } else {

    ratio = ajj_r / ajj_i;

    den   = 1. /(ajj_i * ( 1 + ratio * ratio));

    ajj_r =  ratio * den;

    ajj_i = -den;

  }

  *(a + (j + j * lda) * COMPSIZE + 0) = ajj_r;

  *(a + (j + j * lda) * COMPSIZE + 1) = ajj_i;

#endif

  ZTRMV (j,

	 a                     , lda, 

	 a + j * lda * COMPSIZE, 1,

	 sb);

  SCAL_K(j, 0, 0, 

	  -ajj_r, -ajj_i,

	  a + j * lda * COMPSIZE, 1,

	  NULL, 0, NULL, 0);

  }

  return 0;

}