    /*
     *
     * cblas_ctrsm.c
     * This program is a C interface to ctrsm.
     * Written by Keita Teranishi
     * 4/8/1998
     *
     */

    #include "cblas.h"
    #include "cblas_f77.h"
    void cblas_ctrsm(const enum CBLAS_ORDER Order, const enum CBLAS_SIDE Side,
                     const enum CBLAS_UPLO Uplo, const enum CBLAS_TRANSPOSE TransA,
                     const enum CBLAS_DIAG Diag, const CBLAS_INT_TYPE M, const CBLAS_INT_TYPE N,
                     const void *alpha, const void  *A, const CBLAS_INT_TYPE lda,
                     void  *B, const CBLAS_INT_TYPE ldb)
    {
       char UL, TA, SD, DI;
    #ifdef F77_CHAR
       F77_CHAR F77_TA, F77_UL, F77_SD, F77_DI;
    #else
       #define F77_TA &TA
       #define F77_UL &UL
       #define F77_SD &SD
       #define F77_DI &DI
    #endif

    #ifdef F77_INT
       F77_INT F77_M=M, F77_N=N, F77_lda=lda, F77_ldb=ldb;
    #else
       #define F77_M M
       #define F77_N N
       #define F77_lda lda
       #define F77_ldb ldb
    #endif

       if( Order == CblasColMajor )
       {

          if( Side == CblasRight) SD='R';
          else if ( Side == CblasLeft ) SD='L';
          else
          {
             cblas_xerbla(2, "cblas_ctrsm", "Illegal Side setting, %d\n", Side);
             return;
          }

          if( Uplo == CblasUpper) UL='U';
          else if ( Uplo == CblasLower ) UL='L';
          else
          {
             cblas_xerbla(3, "cblas_ctrsm", "Illegal Uplo setting, %d\n", Uplo);
             return;
          }

          if( TransA == CblasTrans) TA ='T';
          else if ( TransA == CblasConjTrans ) TA='C';
          else if ( TransA == CblasNoTrans )   TA='N';
          else
          {
             cblas_xerbla(4, "cblas_ctrsm", "Illegal Trans setting, %d\n", TransA);
             return;
          }

          if( Diag == CblasUnit ) DI='U';
          else if ( Diag == CblasNonUnit ) DI='N';
          else
          {
             cblas_xerbla(5, "cblas_ctrsm", "Illegal Diag setting, %d\n", Diag);
             return;
          }

          #ifdef F77_CHAR
             F77_UL = C2F_CHAR(&UL);
             F77_TA = C2F_CHAR(&TA);
             F77_SD = C2F_CHAR(&SD);
             F77_DI = C2F_CHAR(&DI);
          #endif

          F77_ctrsm(F77_SD, F77_UL, F77_TA, F77_DI, &F77_M, &F77_N, alpha, A,
                    &F77_lda, B, &F77_ldb);
       } else if (Order == CblasRowMajor)
       {

          if( Side == CblasRight) SD='L';
          else if ( Side == CblasLeft ) SD='R';
          else
          {
             cblas_xerbla(2, "cblas_ctrsm", "Illegal Side setting, %d\n", Side);
             return;
          }

          if( Uplo == CblasUpper) UL='L';
          else if ( Uplo == CblasLower ) UL='U';
          else
          {
             cblas_xerbla(3, "cblas_ctrsm", "Illegal Uplo setting, %d\n", Uplo);
             return;
          }

          if( TransA == CblasTrans) TA ='T';
          else if ( TransA == CblasConjTrans ) TA='C';
          else if ( TransA == CblasNoTrans )   TA='N';
          else
          {
             cblas_xerbla(4, "cblas_ctrsm", "Illegal Trans setting, %d\n", TransA);
             return;
          }

          if( Diag == CblasUnit ) DI='U';
          else if ( Diag == CblasNonUnit ) DI='N';
          else
          {
             cblas_xerbla(5, "cblas_ctrsm", "Illegal Diag setting, %d\n", Diag);
             return;
          }

          #ifdef F77_CHAR
             F77_UL = C2F_CHAR(&UL);
             F77_TA = C2F_CHAR(&TA);
             F77_SD = C2F_CHAR(&SD);
             F77_DI = C2F_CHAR(&DI);
          #endif

          F77_ctrsm(F77_SD, F77_UL, F77_TA, F77_DI, &F77_N, &F77_M, alpha, A,
                    &F77_lda, B, &F77_ldb);
       }
       else cblas_xerbla(1, "cblas_ctrsm", "Illegal Order setting, %d\n", Order);
       return;
    }