atl_f77wrap_gesv.c

来自「基于Blas CLapck的.用过的人知道是干啥的」· C语言 代码 · 共 59 行

/*
 *             Automatically Tuned Linear Algebra Software v3.8.0
 *                    (C) Copyright 1999 R. Clint Whaley
 *
 * Code contributers : R. Clint Whaley, Antoine P. Petitet
 *
 * 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.
 *   3. The name of the ATLAS group or the names of its contributers may
 *      not be used to endorse or promote products derived from this
 *      software without specific written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``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 ATLAS GROUP OR ITS 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.
 *
 */

#include "f77wrap_lapack.h"
#include "atlas_lapack.h"
void F77WRAP_GESV(const F77_INTEGER *N, const F77_INTEGER *NRHS,
                  TYPE *A, const F77_INTEGER *lda, F77_INTEGER *ipiv0,
                  TYPE *B, const F77_INTEGER *ldb, F77_INTEGER *info)
{
   const int n = *N;
   int i;
   #ifdef ATL_FunkyInts
      int *ipiv;
      ipiv = malloc(n*sizeof(int));
      ATL_assert(ipiv);
   #else
      #define ipiv ipiv0
   #endif

   *info = ATL_getrf(AtlasColMajor, *N, *N, A, *lda, ipiv);
   if (*info == 0)
      ATL_getrs(AtlasColMajor, AtlasNoTrans, *N, *NRHS, A, *lda, ipiv, B, *ldb);
   #ifdef ATL_FunkyInts
      for (i=0; i != n; i++) ipiv0[i] = ipiv[i] + 1;
      free(ipiv);
   #else
      for (i=0; i != n; i++) ipiv[i]++;
   #endif
}