Centre Blaise Pascal » HPL sur GPU

/* 

 * -- High Performance Computing Linpack Benchmark (HPL)                

 *    HPL - 2.0 - September 10, 2008                          

 *    Antoine P. Petitet                                                

 *    University of Tennessee, Knoxville                                

 *    Innovative Computing Laboratory                                 

 *    (C) Copyright 2000-2008 All Rights Reserved                       

 *                                                                      

 * -- Copyright notice and Licensing terms:                             

 *                                                                      

 * 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. All  advertising  materials  mentioning  features  or  use of this

 * software must display the following acknowledgement:                 

 * This  product  includes  software  developed  at  the  University  of

 * Tennessee, Knoxville, Innovative Computing Laboratory.             

 *                                                                      

 * 4. The name of the  University,  the name of the  Laboratory,  or the

 * names  of  its  contributors  may  not  be used to endorse or promote

 * products  derived   from   this  software  without  specific  written

 * permission.                                                          

 *                                                                      

 * -- Disclaimer:                                                       

 *                                                                      

 * 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 UNIVERSITY

 * 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. 

 * ---------------------------------------------------------------------

 */ 

/*

 * Include files

 */

#include "hpl.h"

#ifndef HPL_dtrsm

#ifdef HPL_CALL_VSIPL

#ifdef STDC_HEADERS

static void HPL_dtrsmLLNN

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmLLNN( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   int                        i, iaik, ibij, ibkj, j, jak, jbj, k;

   for( j = 0, jbj = 0; j < N; j++, jbj += LDB )

   {

      for( i = 0, ibij= jbj; i < M; i++, ibij += 1 ) { B[ibij] *= ALPHA; }

      for( k = 0, jak  = 0, ibkj = jbj; k < M; k++, jak += LDA, ibkj += 1 )

      {

         B[ibkj] /= A[k+jak];

         for( i = k+1,    iaik  = k+1+jak, ibij  = k+1+jbj;

              i < M; i++, iaik +=1,        ibij += 1 )

         { B[ibij] -= B[ibkj] * A[iaik]; }

      }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmLLNU

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmLLNU( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   int                        i, iaik, ibij, ibkj, j, jak, jbj, k;

   for( j = 0, jbj = 0; j < N; j++, jbj += LDB )

   {

      for( i = 0, ibij= jbj; i < M; i++, ibij += 1 ) { B[ibij] *= ALPHA; }

      for( k = 0, jak  = 0, ibkj = jbj; k < M; k++, jak += LDA, ibkj += 1 )

      {

         for( i = k+1,    iaik  = k+1+jak, ibij  = k+1+jbj;

              i < M; i++, iaik +=1,        ibij += 1 )

         { B[ibij] -= B[ibkj] * A[iaik]; }

      }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmLLTN

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmLLTN( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   register double            t0;

   int                        i, iaki, ibij, ibkj, j, jai, jbj, k;

   for( j = 0, jbj = 0; j < N; j++, jbj += LDB )

   {

      for( i = M-1,     jai  = (M-1)*LDA, ibij  = M-1+jbj;

           i >= 0; i--, jai -= LDA,       ibij -= 1 )

      {

         t0 = ALPHA * B[ibij];

         for( k = i+1,    iaki  = i+1+jai, ibkj  = i+1+jbj;

              k < M; k++, iaki += 1,       ibkj += 1 )

         { t0 -= A[iaki] * B[ibkj]; }

         t0 /= A[i+jai];

         B[ibij] = t0;

      }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmLLTU

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmLLTU( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   register double            t0;

   int                        i, iaki, ibij, ibkj, j, jai, jbj, k;

   for( j = 0, jbj = 0; j < N; j++, jbj += LDB )

   {

      for( i = M-1,     jai  = (M-1)*LDA, ibij  = M-1+jbj;

           i >= 0; i--, jai -= LDA,       ibij -= 1 )

      {

         t0 = ALPHA * B[ibij];

         for( k = i+1,    iaki  = i+1+jai, ibkj  = i+1+jbj;

              k < M; k++, iaki += 1,       ibkj += 1 )

         { t0 -= A[iaki] * B[ibkj]; }

         B[ibij] = t0;

      }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmLUNN

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmLUNN( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   int                        i, iaik, ibij, ibkj, j, jak, jbj, k;

   for( j = 0, jbj = 0; j < N; j++, jbj += LDB )

   {

      for( i = 0, ibij = jbj; i < M; i++, ibij += 1 ) { B[ibij] *= ALPHA; }

      for( k = M-1,     jak  = (M-1)*LDA, ibkj  = M-1+jbj;

           k >= 0; k--, jak -= LDA,       ibkj -= 1 )

      {

         B[ibkj] /= A[k+jak];

         for( i = 0,      iaik  = jak, ibij  = jbj;

              i < k; i++, iaik += 1,   ibij += 1 )

         { B[ibij] -= B[ibkj] * A[iaik]; }

      }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmLUNU

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmLUNU( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   int                        i, iaik, ibij, ibkj, j, jak, jbj, k;

   for( j = 0, jbj = 0; j < N; j++, jbj += LDB )

   {

      for( i = 0, ibij = jbj; i < M; i++, ibij += 1 ) { B[ibij] *= ALPHA; }

      for( k = M-1,     jak  = (M-1)*LDA, ibkj  = M-1+jbj;

           k >= 0; k--, jak -= LDA,       ibkj -= 1 )

      {

         for( i = 0,      iaik  = jak, ibij  = jbj;

              i < k; i++, iaik += 1,   ibij += 1 )

         { B[ibij] -= B[ibkj] * A[iaik]; }

      }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmLUTN

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmLUTN( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   int                        i, iaki, ibij, ibkj, j, jai, jbj, k;

   register double            t0;

   for( j = 0, jbj  = 0; j < N; j++, jbj += LDB )

   {

      for( i = 0, jai  = 0, ibij = jbj; i < M; i++, jai += LDA, ibij += 1 )

      {

         t0 = ALPHA * B[ibij];

         for( k = 0, iaki = jai, ibkj = jbj; k < i; k++, iaki += 1, ibkj += 1 )

         { t0 -= A[iaki] * B[ibkj]; }

         t0 /= A[i+jai];

         B[ibij] = t0;

      }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmLUTU

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmLUTU( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   register double            t0;

   int                        i, iaki, ibij, ibkj, j, jai, jbj, k;

   for( j = 0, jbj  = 0; j < N; j++, jbj += LDB )

   {

      for( i = 0, jai  = 0, ibij = jbj; i < M; i++, jai += LDA, ibij += 1 )

      {

         t0 = ALPHA * B[ibij];

         for( k = 0, iaki = jai, ibkj = jbj; k < i; k++, iaki += 1, ibkj += 1 )

         { t0 -= A[iaki] * B[ibkj]; }

         B[ibij] = t0;

      }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmRLNN

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmRLNN( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   int                        i, iakj, ibij, ibik, j, jaj, jbj, jbk, k;

   for( j = N-1,      jaj  = (N-1)*LDA, jbj  = (N-1)*LDB;

        j >= 0;  j--, jaj -= LDA,       jbj -= LDB )

   {

      for( i = 0, ibij = jbj; i < M; i++, ibij += 1 ) { B[ibij] *= ALPHA; }

      for( k = j+1,    iakj  = j+1+jaj, jbk  = (j+1)*LDB;

           k < N; k++, iakj += 1,       jbk += LDB )

      {

         for( i = 0, ibij = jbj, ibik = jbk; i < M; i++, ibij += 1, ibik += 1 )

         { B[ibij] -= A[iakj] * B[ibik]; }

      }

      for( i = 0, ibij = jbj; i < M; i++, ibij += 1 ) { B[ibij] /= A[j+jaj]; }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmRLNU

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmRLNU( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   int                        i, iakj, ibij, ibik, j, jaj, jbj, jbk, k;

   for( j = N-1,      jaj  = (N-1)*LDA, jbj  = (N-1)*LDB;

        j >= 0;  j--, jaj -= LDA,       jbj -= LDB )

   {

      for( i = 0, ibij = jbj; i < M; i++, ibij += 1 ) { B[ibij] *= ALPHA; }

      for( k = j+1,    iakj  = j+1+jaj, jbk  = (j+1)*LDB;

           k < N; k++, iakj += 1,       jbk += LDB )

      {

         for( i = 0, ibij = jbj, ibik = jbk; i < M; i++, ibij += 1, ibik += 1 )

         { B[ibij] -= A[iakj] * B[ibik]; }

      }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmRLTN

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmRLTN( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   register double            t0;

   int                        i, iajk, ibij, ibik, j, jak, jbj, jbk, k;

   for( k = 0, jak = 0, jbk = 0; k < N; k++, jak += LDA, jbk += LDB )

   {

      for( i = 0, ibik = jbk; i < M; i++, ibik += 1 ) { B[ibik] /= A[k+jak]; }

      for( j = k+1,    iajk  = (k+1)+jak, jbj  = (k+1)*LDB;

           j < N; j++, iajk += 1,         jbj += LDB )

      {

         t0 = A[iajk];

         for( i = 0, ibij = jbj, ibik = jbk; i < M; i++, ibij += 1, ibik += 1 )

         { B[ibij] -= t0 * B[ibik]; }

      }

      for( i = 0, ibik = jbk; i < M; i++, ibik += 1 ) { B[ibik] *= ALPHA; }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmRLTU

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmRLTU( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   register double            t0;

   int                        i, iajk, ibij, ibik, j, jak, jbj, jbk, k;

   for( k = 0, jak = 0, jbk = 0; k < N; k++, jak += LDA, jbk += LDB )

   {

      for( j = k+1,    iajk  = (k+1)+jak, jbj  = (k+1)*LDB;

           j < N; j++, iajk += 1,         jbj += LDB )

      {

         t0 = A[iajk];

         for( i = 0, ibij = jbj, ibik = jbk; i < M; i++, ibij += 1, ibik += 1 )

         { B[ibij] -= t0 * B[ibik]; }

      }

      for( i = 0, ibik = jbk; i < M; i++, ibik += 1 ) { B[ibik] *= ALPHA; }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmRUNN

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmRUNN( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   int                        i, iakj, ibij, ibik, j, jaj, jbj, jbk, k;

   for( j = 0, jaj = 0, jbj = 0; j < N; j++, jaj += LDA, jbj += LDB )

   {

      for( i = 0, ibij = jbj; i < M; i++, ibij += 1 ) { B[ibij] *= ALPHA; }

      for( k = 0, iakj = jaj, jbk = 0; k < j; k++, iakj += 1, jbk += LDB )

      {

         for( i = 0, ibij = jbj, ibik = jbk; i < M; i++, ibij += 1, ibik += 1 )

         { B[ibij] -= A[iakj] * B[ibik]; }

      }

      for( i = 0, ibij = jbj; i < M; i++, ibij += 1 ) { B[ibij] /= A[j+jaj]; }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmRUNU

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmRUNU( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   int                        i, iakj, ibij, ibik, j, jaj, jbj, jbk, k;

   for( j = 0, jaj = 0, jbj = 0; j < N; j++, jaj += LDA, jbj += LDB )

   {

      for( i = 0, ibij = jbj; i < M; i++, ibij += 1 ) { B[ibij] *= ALPHA; }

      for( k = 0, iakj = jaj, jbk = 0; k < j; k++, iakj += 1, jbk += LDB )

      {

         for( i = 0, ibij = jbj, ibik = jbk; i < M; i++, ibij += 1, ibik += 1 )

         { B[ibij] -= A[iakj] * B[ibik]; }

      }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmRUTN

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmRUTN( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   register double            t0;

   int                        i, iajk, ibij, ibik, j, jak, jbj, jbk, k;

   for( k = N-1,     jak  = (N-1)*LDA, jbk  = (N-1)*LDB;

        k >= 0; k--, jak -= LDA,       jbk -= LDB )

   {

      for( i = 0, ibik = jbk; i < M; i++, ibik += 1 ) { B[ibik] /= A[k+jak]; }

      for( j = 0, iajk = jak, jbj = 0; j < k; j++, iajk += 1, jbj += LDB )

      {

         t0 = A[iajk];

         for( i = 0, ibij = jbj, ibik = jbk; i < M; i++, ibij += 1, ibik += 1 )

         { B[ibij] -= t0 * B[ibik]; }

      }

      for( i = 0, ibik = jbk; i < M; i++, ibik += 1 ) { B[ibik] *= ALPHA; }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsmRUTU

(

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsmRUTU( M, N, ALPHA, A, LDA, B, LDB )

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{

   register double            t0;

   int                        i, iajk, ibij, ibik, j, jak, jbj, jbk, k;

   for( k = N-1,     jak  = (N-1)*LDA, jbk  = (N-1)*LDB;

        k >= 0; k--, jak -= LDA,       jbk -= LDB )

   {

      for( j = 0, iajk = jak, jbj = 0; j < k; j++, iajk += 1, jbj += LDB )

      {

         t0 = A[iajk];

         for( i = 0, ibij = jbj, ibik = jbk; i < M; i++, ibij += 1, ibik += 1 )

         { B[ibij] -= t0 * B[ibik]; }

      }

      for( i = 0, ibik = jbk; i < M; i++, ibik += 1 ) { B[ibik] *= ALPHA; }

   }

}

#ifdef STDC_HEADERS

static void HPL_dtrsm0

(

   const enum HPL_SIDE        SIDE,

   const enum HPL_UPLO        UPLO,

   const enum HPL_TRANS       TRANS,

   const enum HPL_DIAG        DIAG,

   const int                  M,

   const int                  N,

   const double               ALPHA,

   const double               * A,

   const int                  LDA,

   double                     * B,

   const int                  LDB

)

#else

static void HPL_dtrsm0( SIDE, UPLO, TRANS, DIAG, M, N, ALPHA, A, LDA, B, LDB )

   const enum HPL_SIDE        SIDE;

   const enum HPL_UPLO        UPLO;

   const enum HPL_TRANS       TRANS;

   const enum HPL_DIAG        DIAG;

   const int                  LDA, LDB, M, N;

   const double               ALPHA;

   const double               * A;

   double                     * B;

#endif

{ 

   int                        i, j;

   if( ( M == 0 ) || ( N == 0 ) ) return;

   if( ALPHA == HPL_rzero )

   {

      for( j = 0; j < N; j++ )

      {  for( i = 0; i < M; i++ ) *(B+i+j*LDB) = HPL_rzero; }

      return;

   }

   if( SIDE == HplLeft )

   {

      if( UPLO == HplUpper )

      {

         if( TRANS == HplNoTrans )

         {

            if( DIAG == HplNonUnit )

            {      HPL_dtrsmLUNN( M, N, ALPHA, A, LDA, B, LDB ); }

            else { HPL_dtrsmLUNU( M, N, ALPHA, A, LDA, B, LDB ); }

         }

         else

         {

            if( DIAG == HplNonUnit )

            {      HPL_dtrsmLUTN( M, N, ALPHA, A, LDA, B, LDB ); }

            else { HPL_dtrsmLUTU( M, N, ALPHA, A, LDA, B, LDB ); }

         }

      }

      else

      {

         if( TRANS == HplNoTrans )

         {

            if( DIAG == HplNonUnit )

            {      HPL_dtrsmLLNN( M, N, ALPHA, A, LDA, B, LDB ); }

            else { HPL_dtrsmLLNU( M, N, ALPHA, A, LDA, B, LDB ); }

         }

         else

         {

            if( DIAG == HplNonUnit )

            {      HPL_dtrsmLLTN( M, N, ALPHA, A, LDA, B, LDB ); }

            else { HPL_dtrsmLLTU( M, N, ALPHA, A, LDA, B, LDB ); }

         }

      }

   }

   else

   {

      if( UPLO == HplUpper )

      {

         if( TRANS == HplNoTrans )

         {

            if( DIAG == HplNonUnit )

            {      HPL_dtrsmRUNN( M, N, ALPHA, A, LDA, B, LDB ); }

            else { HPL_dtrsmRUNU( M, N, ALPHA, A, LDA, B, LDB ); }

         }

         else

         {

            if( DIAG == HplNonUnit )

            {      HPL_dtrsmRUTN( M, N, ALPHA, A, LDA, B, LDB ); }

            else { HPL_dtrsmRUTU( M, N, ALPHA, A, LDA, B, LDB ); }

         }

      }

      else

      {

         if( TRANS == HplNoTrans )

         {

            if( DIAG == HplNonUnit )

            {      HPL_dtrsmRLNN( M, N, ALPHA, A, LDA, B, LDB ); }

            else { HPL_dtrsmRLNU( M, N, ALPHA, A, LDA, B, LDB ); }

         }

         else

         {

            if( DIAG == HplNonUnit )

            {      HPL_dtrsmRLTN( M, N, ALPHA, A, LDA, B, LDB ); }

            else { HPL_dtrsmRLTU( M, N, ALPHA, A, LDA, B, LDB ); }

         }

      }

   }

}

#endif

#ifdef STDC_HEADERS

void HPL_dtrsm

(

   const enum HPL_ORDER             ORDER,

   const enum HPL_SIDE              SIDE,

   const enum HPL_UPLO              UPLO,

   const enum HPL_TRANS             TRANS,

   const enum HPL_DIAG              DIAG,

   const int                        M,

   const int                        N,

   const double                     ALPHA,

   const double *                   A,

   const int                        LDA,

   double *                         B,

   const int                        LDB

)

#else

void HPL_dtrsm

( ORDER, SIDE, UPLO, TRANS, DIAG, M, N, ALPHA, A, LDA, B, LDB )

   const enum HPL_ORDER             ORDER;

   const enum HPL_SIDE              SIDE;

   const enum HPL_UPLO              UPLO;

   const enum HPL_TRANS             TRANS;

   const enum HPL_DIAG              DIAG;

   const int                        M;

   const int                        N;

   const double                     ALPHA;

   const double *                   A;

   const int                        LDA;

   double *                         B;

   const int                        LDB;

#endif

{

/* 

 * Purpose

 * =======

 *

 * HPL_dtrsm solves one of the matrix equations

 *  

 *    op( A ) * X = alpha * B,   or  X * op( A ) = alpha * B,

 *  

 * where alpha is a scalar, X and B are m by n matrices, A is a unit, or

 * non-unit, upper or lower triangular matrix and op(A) is one of

 *  

 *    op( A ) = A   or   op( A ) = A^T.

 *  

 * The matrix X is overwritten on B.

 *  

 * No test for  singularity  or  near-singularity  is included  in  this

 * routine. Such tests must be performed before calling this routine.

 *

 * Arguments

 * =========

 *

 * ORDER   (local input)                 const enum HPL_ORDER

 *         On entry, ORDER  specifies the storage format of the operands

 *         as follows:                                                  

 *            ORDER = HplRowMajor,                                      

 *            ORDER = HplColumnMajor.                                   

 *

 * SIDE    (local input)                 const enum HPL_SIDE

 *         On entry, SIDE  specifies  whether  op(A) appears on the left

 *         or right of X as follows:

 *            SIDE==HplLeft    op( A ) * X = alpha * B,

 *            SIDE==HplRight   X * op( A ) = alpha * B.

 *

 * UPLO    (local input)                 const enum HPL_UPLO

 *         On  entry,   UPLO   specifies  whether  the  upper  or  lower

 *         triangular  part  of the array  A  is to be referenced.  When

 *         UPLO==HplUpper, only  the upper triangular part of A is to be

 *         referenced, otherwise only the lower triangular part of A is 

 *         to be referenced. 

 *

 * TRANS   (local input)                 const enum HPL_TRANS

 *         On entry, TRANSA  specifies the form of  op(A)  to be used in

 *         the matrix-matrix operation follows:                         

 *            TRANSA==HplNoTrans    : op( A ) = A,                     

 *            TRANSA==HplTrans      : op( A ) = A^T,                   

 *            TRANSA==HplConjTrans  : op( A ) = A^T.                   

 *

 * DIAG    (local input)                 const enum HPL_DIAG

 *         On entry,  DIAG  specifies  whether  A  is unit triangular or

 *         not. When DIAG==HplUnit,  A is assumed to be unit triangular,

 *         and otherwise, A is not assumed to be unit triangular.

 *

 * M       (local input)                 const int

 *         On entry,  M  specifies  the number of rows of the  matrix B.

 *         M must be at least zero.

 *

 * N       (local input)                 const int

 *         On entry, N  specifies the number of columns of the matrix B.

 *         N must be at least zero.

 *

 * ALPHA   (local input)                 const double

 *         On entry, ALPHA specifies the scalar alpha.   When  ALPHA  is

 *         supplied  as  zero then the elements of the matrix B need not

 *         be set on input.

 *

 * A       (local input)                 const double *

 *         On entry,  A  points  to an array of size equal to or greater

 *         than LDA * k,  where  k is m  when  SIDE==HplLeft  and  is  n

 *         otherwise.  Before  entry  with  UPLO==HplUpper,  the leading

 *         k by k upper triangular  part of the array A must contain the

 *         upper triangular  matrix and the  strictly  lower  triangular

 *         part of A is not referenced.  When  UPLO==HplLower on  entry,

 *         the  leading k by k lower triangular part of the array A must

 *         contain the lower triangular matrix  and  the  strictly upper

 *         triangular part of A is not referenced.

 *          

 *         Note that  when  DIAG==HplUnit,  the  diagonal elements of  A

 *         not referenced  either,  but are assumed to be unity.

 *

 * LDA     (local input)                 const int

 *         On entry,  LDA  specifies  the  leading  dimension  of  A  as

 *         declared  in  the  calling  (sub) program.  LDA  must  be  at

 *         least MAX(1,m) when SIDE==HplLeft, and MAX(1,n) otherwise.

 *

 * B       (local input/output)          double *

 *         On entry,  B  points  to an array of size equal to or greater

 *         than LDB * n.  Before entry, the leading  m by n  part of the

 *         array B must contain the matrix  B, except when beta is zero,

 *         in which case B need not be set on entry.  On exit, the array

 *         B is overwritten by the m by n solution matrix.

 *

 * LDB     (local input)                 const int

 *         On entry,  LDB  specifies  the  leading  dimension  of  B  as

 *         declared  in  the  calling  (sub) program.  LDB  must  be  at

 *         least MAX(1,m).

 *

 * ---------------------------------------------------------------------

 */ 

#ifdef HPL_CALL_CBLAS

   cblas_dtrsm( ORDER, SIDE, UPLO, TRANS, DIAG, M, N, ALPHA, A, LDA, B, LDB );

#endif

#ifdef HPL_CALL_VSIPL

   if( ORDER == HplColumnMajor )

   {

      HPL_dtrsm0( SIDE, UPLO, TRANS, DIAG, M, N, ALPHA, A, LDA, B, LDB );

   }

   else

   {

      HPL_dtrsm0( ( SIDE == HplRight ? HplLeft  : HplRight ),

                  ( UPLO == HplLower ? HplUpper : HplLower ),

                  TRANS, DIAG, N, M, ALPHA, A, LDA, B, LDB );

   }

#endif

#ifdef HPL_CALL_FBLAS

   double                    alpha = ALPHA;

#ifdef StringSunStyle

#if defined( HPL_USE_F77_INTEGER_DEF )

   F77_INTEGER               IONE = 1;

#else

   int                       IONE = 1;

#endif

#endif

#ifdef StringStructVal

   F77_CHAR                  fside;

   F77_CHAR                  fuplo;

   F77_CHAR                  ftran;

   F77_CHAR                  fdiag;

#endif

#ifdef StringStructPtr

   F77_CHAR                  fside;

   F77_CHAR                  fuplo;

   F77_CHAR                  ftran;

   F77_CHAR                  fdiag;

#endif

#ifdef StringCrayStyle

   F77_CHAR                  fside;

   F77_CHAR                  fuplo;

   F77_CHAR                  ftran;

   F77_CHAR                  fdiag;

#endif

#ifdef HPL_USE_F77_INTEGER_DEF

   const F77_INTEGER         F77M   = M,   F77N   = N,

                             F77lda = LDA, F77ldb = LDB;

#else

#define  F77M                M

#define  F77N                N

#define  F77lda              LDA

#define  F77ldb              LDB

#endif

   char                      cside, cuplo, ctran, cdiag;

   if(      TRANS == HplNoTrans ) ctran = 'N';

   else if( TRANS == HplTrans   ) ctran = 'T';

   else                           ctran = 'C';

   cdiag = ( DIAG == HplUnit  ? 'U' : 'N' );

   if( ORDER == HplColumnMajor )

   {

      cside = ( SIDE == HplRight ? 'R' : 'L' );

      cuplo = ( UPLO == HplLower ? 'L' : 'U' );

#ifdef StringSunStyle

      F77dtrsm( &cside, &cuplo, &ctran, &cdiag, &F77M, &F77N, &alpha,

                A, &F77lda, B, &F77ldb, IONE, IONE, IONE, IONE );

#endif

#ifdef StringCrayStyle

      fside = HPL_C2F_CHAR( cside ); fuplo = HPL_C2F_CHAR( cuplo );

      ftran = HPL_C2F_CHAR( ctran ); fdiag = HPL_C2F_CHAR( cdiag );

      F77dtrsm( fside,  fuplo,  ftran,  fdiag,  &F77M, &F77N, &alpha,

                A, &F77lda, B, &F77ldb );

#endif

#ifdef StringStructVal

      fside.len = 1; fside.cp = &cside; fuplo.len = 1; fuplo.cp = &cuplo;

      ftran.len = 1; ftran.cp = &ctran; fdiag.len = 1; fdiag.cp = &cdiag;

      F77dtrsm( fside,  fuplo,  ftran,  fdiag,  &F77M, &F77N, &alpha,

                A, &F77lda, B, &F77ldb );

#endif

#ifdef StringStructPtr

      fside.len = 1; fside.cp = &cside; fuplo.len = 1; fuplo.cp = &cuplo;

      ftran.len = 1; ftran.cp = &ctran; fdiag.len = 1; fdiag.cp = &cdiag;

      F77dtrsm( &fside, &fuplo, &ftran, &fdiag, &F77M, &F77N, &alpha,

                A, &F77lda, B, &F77ldb );

#endif

   }

   else

   {

      cside = ( SIDE == HplRight ? 'L' : 'R' );

      cuplo = ( UPLO == HplLower ? 'U' : 'L' );

#ifdef StringSunStyle

      F77dtrsm( &cside, &cuplo, &ctran, &cdiag, &F77N, &F77M, &alpha,

                A, &F77lda, B, &F77ldb, IONE, IONE, IONE, IONE );

#endif

#ifdef StringCrayStyle

      fside = HPL_C2F_CHAR( cside ); fuplo = HPL_C2F_CHAR( cuplo );

      ftran = HPL_C2F_CHAR( ctran ); fdiag = HPL_C2F_CHAR( cdiag );

      F77dtrsm( fside,  fuplo,  ftran,  fdiag,  &F77N, &F77M, &alpha,

                A, &F77lda, B, &F77ldb );

#endif

#ifdef StringStructVal

      fside.len = 1; fside.cp = &cside; fuplo.len = 1; fuplo.cp = &cuplo;

      ftran.len = 1; ftran.cp = &ctran; fdiag.len = 1; fdiag.cp = &cdiag;

      F77dtrsm( fside,  fuplo,  ftran,  fdiag,  &F77N, &F77M, &alpha,

                A, &F77lda, B, &F77ldb );

#endif

#ifdef StringStructPtr

      fside.len = 1; fside.cp = &cside; fuplo.len = 1; fuplo.cp = &cuplo;

      ftran.len = 1; ftran.cp = &ctran; fdiag.len = 1; fdiag.cp = &cdiag;

      F77dtrsm( &fside, &fuplo, &ftran, &fdiag, &F77N, &F77M, &alpha,

                A, &F77lda, B, &F77ldb );

#endif

   }

#endif

#ifdef HPL_CALL_CUBLAS

   double                    alpha = ALPHA;

   int                       IONE = 1;

#define  CUBLASM                M

#define  CUBLASN                N

#define  CUBLASlda              LDA

#define  CUBLASldb              LDB

   char                      cside, cuplo, ctran, cdiag;

   if(      TRANS == HplNoTrans ) ctran = 'N';

   else if( TRANS == HplTrans   ) ctran = 'T';

   else                           ctran = 'C';

   cdiag = ( DIAG == HplUnit  ? 'U' : 'N' );

   if( ORDER == HplColumnMajor )

   {

      cside = ( SIDE == HplRight ? 'R' : 'L' );

      cuplo = ( UPLO == HplLower ? 'L' : 'U' );

      CUBLAS_DTRSM( &cside, &cuplo, &ctran, &cdiag, &CUBLASM, &CUBLASN, &alpha,

                    A, &CUBLASlda, B, &CUBLASldb, &IONE, &IONE, &IONE, &IONE );

   }

   else

   {

      cside = ( SIDE == HplRight ? 'L' : 'R' );

      cuplo = ( UPLO == HplLower ? 'U' : 'L' );

      CUBLAS_DTRSM( &cside, &cuplo, &ctran, &cdiag, &CUBLASN, &CUBLASM, &alpha,

                    A, &CUBLASlda, B, &CUBLASldb, &IONE, &IONE, &IONE, &IONE );

   }

#endif

/*

 * End of HPL_dtrsm

 */

}

#endif