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

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

/* All rights reserved.                                              */

/*                                                                   */

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

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

/* conditions are met:                                               */

/*                                                                   */

/*   1. Redistributions of source code must retain the above         */

/*      copyright notice, this list of conditions and the following  */

/*      disclaimer.                                                  */

/*                                                                   */

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

/*      copyright notice, this list of conditions and the following  */

/*      disclaimer in the documentation and/or other materials       */

/*      provided with the distribution.                              */

/*                                                                   */

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

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

/*    INCLUDING, BUT  NOT LIMITED  TO, THE IMPLIED  WARRANTIES OF    */

/*    MERCHANTABILITY  AND FITNESS FOR  A PARTICULAR  PURPOSE ARE    */

/*    DISCLAIMED.  IN  NO EVENT SHALL THE UNIVERSITY  OF TEXAS AT    */

/*    AUSTIN OR CONTRIBUTORS BE  LIABLE FOR ANY DIRECT, INDIRECT,    */

/*    INCIDENTAL,  SPECIAL, EXEMPLARY,  OR  CONSEQUENTIAL DAMAGES    */

/*    (INCLUDING, BUT  NOT LIMITED TO,  PROCUREMENT OF SUBSTITUTE    */

/*    GOODS  OR  SERVICES; LOSS  OF  USE,  DATA,  OR PROFITS;  OR    */

/*    BUSINESS INTERRUPTION) HOWEVER CAUSED  AND ON ANY THEORY OF    */

/*    LIABILITY, WHETHER  IN CONTRACT, STRICT  LIABILITY, OR TORT    */

/*    (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING IN ANY WAY OUT    */

/*    OF  THE  USE OF  THIS  SOFTWARE,  EVEN  IF ADVISED  OF  THE    */

/*    POSSIBILITY OF SUCH DAMAGE.                                    */

/*                                                                   */

/* The views and conclusions contained in the software and           */

/* documentation are those of the authors and should not be          */

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

/* or implied, of The University of Texas at Austin.                 */

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

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

#include <ctype.h></ctype.h>

#include "common.h"

#ifdef FUNCTION_PROFILE

#include "functable.h"

#endif

#ifdef XDOUBLE

#define ERROR_NAME "QTRSV "

#elif defined(DOUBLE)

#define ERROR_NAME "DTRSV "

#else

#define ERROR_NAME "STRSV "

#endif

static int (*trsv[])(BLASLONG, FLOAT *, BLASLONG, FLOAT *, BLASLONG, void *) = {

#ifdef XDOUBLE

  qtrsv_NUU, qtrsv_NUN, qtrsv_NLU, qtrsv_NLN,

  qtrsv_TUU, qtrsv_TUN, qtrsv_TLU, qtrsv_TLN,

#elif defined(DOUBLE)

  dtrsv_NUU, dtrsv_NUN, dtrsv_NLU, dtrsv_NLN,

  dtrsv_TUU, dtrsv_TUN, dtrsv_TLU, dtrsv_TLN,

#else

  strsv_NUU, strsv_NUN, strsv_NLU, strsv_NLN,

  strsv_TUU, strsv_TUN, strsv_TLU, strsv_TLN,

#endif

};

#ifndef CBLAS

void NAME(char *UPLO, char *TRANS, char *DIAG,

	   blasint *N, FLOAT *a, blasint *LDA, FLOAT *x, blasint *INCX){

  char uplo_arg  = *UPLO;

  char trans_arg = *TRANS;

  char diag_arg  = *DIAG;

  blasint n    = *N;

  blasint lda  = *LDA;

  blasint incx = *INCX;

  blasint info;

  int uplo;

  int unit;

  int trans;

  FLOAT *buffer;

  PRINT_DEBUG_NAME;

  TOUPPER(uplo_arg);

  TOUPPER(trans_arg);

  TOUPPER(diag_arg);

  trans = -1;

  unit  = -1;

  uplo  = -1;

  if (trans_arg == 'N') trans = 0;

  if (trans_arg == 'T') trans = 1;

  if (trans_arg == 'R') trans = 0;

  if (trans_arg == 'C') trans = 1;

  if (diag_arg  == 'U') unit  = 0;

  if (diag_arg  == 'N') unit  = 1;

  if (uplo_arg  == 'U') uplo  = 0;

  if (uplo_arg  == 'L') uplo  = 1;

  info = 0;

  if (incx == 0)          info =  8;

  if (lda  < MAX(1, n))   info =  6;

  if (n < 0)              info =  4;

  if (unit  < 0)          info =  3;

  if (trans < 0)          info =  2;

  if (uplo  < 0)          info =  1;

  if (info != 0) {

    BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));

    return;

  }

#else

void CNAME(enum CBLAS_ORDER order, enum CBLAS_UPLO Uplo,

	   enum CBLAS_TRANSPOSE TransA, enum CBLAS_DIAG Diag,

	   blasint n, FLOAT  *a, blasint lda, FLOAT  *x, blasint incx) {

  int trans, uplo, unit;

  blasint info;

  FLOAT *buffer;

  PRINT_DEBUG_CNAME;

  unit  = -1;

  uplo  = -1;

  trans = -1;

  info  =  0;

  if (order == CblasColMajor) {

    if (Uplo == CblasUpper)         uplo  = 0;

    if (Uplo == CblasLower)         uplo  = 1;

    if (TransA == CblasNoTrans)     trans = 0;

    if (TransA == CblasTrans)       trans = 1;

    if (TransA == CblasConjNoTrans) trans = 0;

    if (TransA == CblasConjTrans)   trans = 1;

    if (Diag == CblasUnit)          unit  = 0;

    if (Diag == CblasNonUnit)       unit  = 1;

    info = -1;

    if (incx == 0)          info =  8;

    if (lda  < MAX(1, n))   info =  6;

    if (n < 0)              info =  4;

    if (unit  < 0)          info =  3;

    if (trans < 0)          info =  2;

    if (uplo  < 0)          info =  1;

  }

  if (order == CblasRowMajor) {

    if (Uplo == CblasUpper)         uplo  = 1;

    if (Uplo == CblasLower)         uplo  = 0;

    if (TransA == CblasNoTrans)     trans = 1;

    if (TransA == CblasTrans)       trans = 0;

    if (TransA == CblasConjNoTrans) trans = 1;

    if (TransA == CblasConjTrans)   trans = 0;

    if (Diag == CblasUnit)          unit  = 0;

    if (Diag == CblasNonUnit)       unit  = 1;

    info = -1;

    if (incx == 0)          info =  8;

    if (lda  < MAX(1, n))   info =  6;

    if (n < 0)              info =  4;

    if (unit  < 0)          info =  3;

    if (trans < 0)          info =  2;

    if (uplo  < 0)          info =  1;

  }

  if (info >= 0) {

    BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));

    return;

  }

#endif

  if (n == 0) return;

  IDEBUG_START;

  FUNCTION_PROFILE_START();

  if (incx < 0 ) x -= (n - 1) * incx;

  buffer = (FLOAT *)blas_memory_alloc(1);

  (trsv[(trans<<2) | (uplo<<1) | unit])(n, a, lda, x, incx, buffer);

  blas_memory_free(buffer);

  FUNCTION_PROFILE_END(1, n * n / 2 + n,  n * n);

  IDEBUG_END;

  return;

}