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/*********************************************************************/
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/* Copyright 2009, 2010 The University of Texas at Austin.           */
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/* All rights reserved.                                              */
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/*                                                                   */
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/* Redistribution and use in source and binary forms, with or        */
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/* without modification, are permitted provided that the following   */
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/* conditions are met:                                               */
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/*                                                                   */
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/*   1. Redistributions of source code must retain the above         */
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/*      copyright notice, this list of conditions and the following  */
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/*      disclaimer.                                                  */
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/*                                                                   */
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/*   2. Redistributions in binary form must reproduce the above      */
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/*      copyright notice, this list of conditions and the following  */
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/*      disclaimer in the documentation and/or other materials       */
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/*      provided with the distribution.                              */
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/*                                                                   */
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/*    THIS  SOFTWARE IS PROVIDED  BY THE  UNIVERSITY OF  TEXAS AT    */
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/*    AUSTIN  ``AS IS''  AND ANY  EXPRESS OR  IMPLIED WARRANTIES,    */
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/*    INCLUDING, BUT  NOT LIMITED  TO, THE IMPLIED  WARRANTIES OF    */
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/*    MERCHANTABILITY  AND FITNESS FOR  A PARTICULAR  PURPOSE ARE    */
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/*    DISCLAIMED.  IN  NO EVENT SHALL THE UNIVERSITY  OF TEXAS AT    */
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/*    AUSTIN OR CONTRIBUTORS BE  LIABLE FOR ANY DIRECT, INDIRECT,    */
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/*    INCIDENTAL,  SPECIAL, EXEMPLARY,  OR  CONSEQUENTIAL DAMAGES    */
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/*    (INCLUDING, BUT  NOT LIMITED TO,  PROCUREMENT OF SUBSTITUTE    */
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/*    GOODS  OR  SERVICES; LOSS  OF  USE,  DATA,  OR PROFITS;  OR    */
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/*    BUSINESS INTERRUPTION) HOWEVER CAUSED  AND ON ANY THEORY OF    */
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/*    LIABILITY, WHETHER  IN CONTRACT, STRICT  LIABILITY, OR TORT    */
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/*    (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING IN ANY WAY OUT    */
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/*    OF  THE  USE OF  THIS  SOFTWARE,  EVEN  IF ADVISED  OF  THE    */
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/*    POSSIBILITY OF SUCH DAMAGE.                                    */
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/*                                                                   */
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/* The views and conclusions contained in the software and           */
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/* documentation are those of the authors and should not be          */
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/* interpreted as representing official policies, either expressed   */
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/* or implied, of The University of Texas at Austin.                 */
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/*********************************************************************/
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#include <stdio.h></stdio.h>
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#include "common.h"
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#ifdef FUNCTION_PROFILE
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#include "functable.h"
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#endif
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#ifdef XDOUBLE
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#define ERROR_NAME "XTRTRI"
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#elif defined(DOUBLE)
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#define ERROR_NAME "ZTRTRI"
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#else
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#define ERROR_NAME "CTRTRI"
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#endif
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static blasint (*trtri_single[])(blas_arg_t *, BLASLONG *, BLASLONG *, FLOAT *, FLOAT *, BLASLONG) ={
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  TRTRI_UU_SINGLE, TRTRI_UN_SINGLE, TRTRI_LU_SINGLE, TRTRI_LN_SINGLE,
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};
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#ifdef SMP
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static blasint (*trtri_parallel[])(blas_arg_t *, BLASLONG *, BLASLONG *, FLOAT *, FLOAT *, BLASLONG) ={
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  TRTRI_UU_PARALLEL, TRTRI_UN_PARALLEL, TRTRI_LU_PARALLEL, TRTRI_LN_PARALLEL,
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};
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#endif
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int NAME(char *UPLO, char *DIAG, blasint *N, FLOAT *a, blasint *ldA, blasint *Info){
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  blas_arg_t args;
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  blasint uplo_arg = *UPLO;
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  blasint diag_arg = *DIAG;
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  blasint uplo, diag;
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  blasint info;
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  FLOAT *buffer;
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#ifdef PPC440
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  extern
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#endif
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  FLOAT *sa, *sb;
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  PRINT_DEBUG_NAME;
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  args.n    = *N;
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  args.a    = (void *)a;
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  args.lda  = *ldA;
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  TOUPPER(uplo_arg);
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  TOUPPER(diag_arg);
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  uplo = -1;
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  if (uplo_arg == 'U') uplo = 0;
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  if (uplo_arg == 'L') uplo = 1;
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  diag = -1;
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  if (diag_arg == 'U') diag = 0;
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  if (diag_arg == 'N') diag = 1;
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  info  = 0;
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  if (args.lda  < MAX(1,args.n)) info = 5;
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  if (args.n    < 0)             info = 3; 
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  if (diag < 0)                  info = 2;
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  if (uplo < 0)                  info = 1;
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  if (info) {
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    BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));
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    *Info = - info;
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    return 0;
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  }
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  *Info = 0;
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  if (args.n == 0) return 0;
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  if (diag) {
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    if (AMIN_K(args.n, args.a, args.lda + 1) == ZERO) {
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      *Info = IAMIN_K(args.n, args.a, args.lda + 1);
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      return 0;
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    }
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  }
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  IDEBUG_START;
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  FUNCTION_PROFILE_START();
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#ifndef PPC440
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  buffer = (FLOAT *)blas_memory_alloc(1);
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  sa = (FLOAT *)((BLASLONG)buffer + GEMM_OFFSET_A);
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  sb = (FLOAT *)(((BLASLONG)sa + ((GEMM_P * GEMM_Q * COMPSIZE * SIZE + GEMM_ALIGN) & ~GEMM_ALIGN)) + GEMM_OFFSET_B);
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#endif
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#ifdef SMP
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  args.common = NULL;
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  args.nthreads = num_cpu_avail(4);
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  if (args.nthreads == 1) {
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#endif
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    *Info = (trtri_single[(uplo << 1) | diag])(&args, NULL, NULL, sa, sb, 0);
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#ifdef SMP
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  } else {
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    *Info = (trtri_parallel[(uplo << 1) | diag])(&args, NULL, NULL, sa, sb, 0);
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  }
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#endif
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#ifndef PPC440
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  blas_memory_free(buffer);
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#endif
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  FUNCTION_PROFILE_END(1, .5 * args.n * args.n,
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		          2. * args.n * (1./3. + args.n * ( 1./2. + args.n * 1./6.))
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		       +  6. * args.n * (1./3. + args.n * (-1./2. + args.n * 1./6.)));
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  IDEBUG_END;
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  return 0;
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}