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

/* 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    */

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/*                                                                   */

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/* 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 "common.h"

#ifdef FUNCTION_PROFILE

#include "functable.h"

#endif

#ifdef XDOUBLE

#define ERROR_NAME "XGETRS"

#elif defined(DOUBLE)

#define ERROR_NAME "ZGETRS"

#else

#define ERROR_NAME "CGETRS"

#endif

static blasint (*getrs_single[])(blas_arg_t *, BLASLONG *, BLASLONG *, FLOAT *, FLOAT *, BLASLONG) ={

  GETRS_N_SINGLE, GETRS_T_SINGLE, GETRS_R_SINGLE, GETRS_C_SINGLE,

};

#ifdef SMP

static blasint (*getrs_parallel[])(blas_arg_t *, BLASLONG *, BLASLONG *, FLOAT *, FLOAT *, BLASLONG) ={

  GETRS_N_PARALLEL, GETRS_T_PARALLEL, GETRS_R_PARALLEL, GETRS_C_PARALLEL,

};

#endif

int NAME(char *TRANS, blasint *N, blasint *NRHS, FLOAT *a, blasint *ldA,

	    blasint *ipiv, FLOAT *b, blasint *ldB, blasint *Info){

  char trans_arg = *TRANS;

  blas_arg_t args;

  blasint info;

  int trans;

  FLOAT *buffer;

#ifdef PPC440

  extern

#endif

  FLOAT *sa, *sb;

  PRINT_DEBUG_NAME;

  args.m    = *N;

  args.n    = *NRHS;

  args.a    = (void *)a;

  args.lda  = *ldA;

  args.b    = (void *)b;

  args.ldb  = *ldB;

  args.c    = (void *)ipiv;

  info = 0;

  TOUPPER(trans_arg);

  trans = -1;

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

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

  if (trans_arg == 'R') trans = 2;

  if (trans_arg == 'C') trans = 3;

  if (args.ldb  < MAX(1, args.m)) info = 8;

  if (args.lda  < MAX(1, args.m)) info = 5;

  if (args.n    < 0) info = 3;

  if (args.m    < 0) info = 2;

  if (trans     < 0) info = 1;

  if (info != 0) {

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

    return 0;

  }

  args.alpha = NULL;

  args.beta  = NULL;

  *Info = info;

  if (args.m == 0 || args.n == 0) return 0;

  IDEBUG_START;

  FUNCTION_PROFILE_START();

#ifndef PPC440

  buffer = (FLOAT *)blas_memory_alloc(1);

  sa = (FLOAT *)((BLASLONG)buffer + GEMM_OFFSET_A);

  sb = (FLOAT *)(((BLASLONG)sa + ((GEMM_P * GEMM_Q * COMPSIZE * SIZE + GEMM_ALIGN) & ~GEMM_ALIGN)) + GEMM_OFFSET_B);

#endif

#ifdef SMP

  args.nthreads = num_cpu_avail(4);

  if (args.nthreads == 1) {

#endif

    (getrs_single[trans])(&args, NULL, NULL, sa, sb, 0);

#ifdef SMP

  } else {

    (getrs_parallel[trans])(&args, NULL, NULL, sa, sb, 0);

  }

#endif

#ifndef PPC440

  blas_memory_free(buffer);

#endif

  FUNCTION_PROFILE_END(COMPSIZE * COMPSIZE, args.m * args.n, 2 * args.m * args.m * args.n);

  IDEBUG_END;

  return 0;

}