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      1 /*
      2  *
      3  * cblas_strsm.c
      4  * This program is a C interface to strsm.
      5  * Written by Keita Teranishi
      6  * 4/6/1998
      7  *
      8  */
      9 
     10 #include "cblas.h"
     11 #include "cblas_f77.h"
     12 void cblas_strsm(const enum CBLAS_ORDER Order, const enum CBLAS_SIDE Side,
     13                  const enum CBLAS_UPLO Uplo, const enum CBLAS_TRANSPOSE TransA,
     14                  const enum CBLAS_DIAG Diag, const int M, const int N,
     15                  const float alpha, const float  *A, const int lda,
     16                  float  *B, const int ldb)
     17 
     18 {
     19    char UL, TA, SD, DI;
     20 #ifdef F77_CHAR
     21    F77_CHAR F77_TA, F77_UL, F77_SD, F77_DI;
     22 #else
     23    #define F77_TA &TA
     24    #define F77_UL &UL
     25    #define F77_SD &SD
     26    #define F77_DI &DI
     27 #endif
     28 
     29 #ifdef F77_INT
     30    F77_INT F77_N=M, F77_N=N, F77_lda=lda, F77_ldb=ldb;
     31 #else
     32    #define F77_M M
     33    #define F77_N N
     34    #define F77_lda lda
     35    #define F77_ldb ldb
     36 #endif
     37 
     38    extern int CBLAS_CallFromC;
     39    extern int RowMajorStrg;
     40    RowMajorStrg = 0;
     41    CBLAS_CallFromC = 1;
     42 
     43    if( Order == CblasColMajor )
     44    {
     45       if( Side == CblasRight) SD='R';
     46       else if ( Side == CblasLeft ) SD='L';
     47       else
     48       {
     49          cblas_xerbla(2, "cblas_strsm", "Illegal Side setting, %d\n", Side);
     50          CBLAS_CallFromC = 0;
     51          RowMajorStrg = 0;
     52          return;
     53       }
     54       if( Uplo == CblasUpper) UL='U';
     55       else if ( Uplo == CblasLower ) UL='L';
     56       else
     57       {
     58          cblas_xerbla(3, "cblas_strsm", "Illegal Uplo setting, %d\n", Uplo);
     59          CBLAS_CallFromC = 0;
     60          RowMajorStrg = 0;
     61          return;
     62       }
     63       if( TransA == CblasTrans) TA ='T';
     64       else if ( TransA == CblasConjTrans ) TA='C';
     65       else if ( TransA == CblasNoTrans )   TA='N';
     66       else
     67       {
     68          cblas_xerbla(4, "cblas_strsm", "Illegal Trans setting, %d\n", TransA);
     69          CBLAS_CallFromC = 0;
     70          RowMajorStrg = 0;
     71          return;
     72       }
     73       if( Diag == CblasUnit ) DI='U';
     74       else if ( Diag == CblasNonUnit ) DI='N';
     75       else
     76       {
     77          cblas_xerbla(5, "cblas_strsm", "Illegal Diag setting, %d\n", Diag);
     78          CBLAS_CallFromC = 0;
     79          RowMajorStrg = 0;
     80          return;
     81       }
     82       #ifdef F77_CHAR
     83          F77_UL = C2F_CHAR(&UL);
     84          F77_TA = C2F_CHAR(&TA);
     85          F77_SD = C2F_CHAR(&SD);
     86          F77_DI = C2F_CHAR(&DI);
     87       #endif
     88 
     89       F77_strsm(F77_SD, F77_UL, F77_TA, F77_DI, &F77_M, &F77_N, &alpha, A, &F77_lda, B, &F77_ldb);
     90    } else if (Order == CblasRowMajor)
     91    {
     92       RowMajorStrg = 1;
     93       if( Side == CblasRight) SD='L';
     94       else if ( Side == CblasLeft ) SD='R';
     95       else
     96       {
     97          cblas_xerbla(2, "cblas_strsm", "Illegal Side setting, %d\n", Side);
     98          CBLAS_CallFromC = 0;
     99          RowMajorStrg = 0;
    100          return;
    101       }
    102       if( Uplo == CblasUpper) UL='L';
    103       else if ( Uplo == CblasLower ) UL='U';
    104       else
    105       {
    106          cblas_xerbla(3, "cblas_strsm", "Illegal Uplo setting, %d\n", Uplo);
    107          CBLAS_CallFromC = 0;
    108          RowMajorStrg = 0;
    109          return;
    110       }
    111       if( TransA == CblasTrans) TA ='T';
    112       else if ( TransA == CblasConjTrans ) TA='C';
    113       else if ( TransA == CblasNoTrans )   TA='N';
    114       else
    115       {
    116          cblas_xerbla(4, "cblas_strsm", "Illegal Trans setting, %d\n", TransA);
    117          CBLAS_CallFromC = 0;
    118          RowMajorStrg = 0;
    119          return;
    120       }
    121       if( Diag == CblasUnit ) DI='U';
    122       else if ( Diag == CblasNonUnit ) DI='N';
    123       else
    124       {
    125          cblas_xerbla(5, "cblas_strsm", "Illegal Diag setting, %d\n", Diag);
    126          CBLAS_CallFromC = 0;
    127          RowMajorStrg = 0;
    128          return;
    129       }
    130       #ifdef F77_CHAR
    131          F77_UL = C2F_CHAR(&UL);
    132          F77_TA = C2F_CHAR(&TA);
    133          F77_SD = C2F_CHAR(&SD);
    134          F77_DI = C2F_CHAR(&DI);
    135       #endif
    136 
    137       F77_strsm(F77_SD, F77_UL, F77_TA, F77_DI, &F77_N, &F77_M, &alpha, A, &F77_lda, B, &F77_ldb);
    138    }
    139    else  cblas_xerbla(1, "cblas_strsm", "Illegal Order setting, %d\n", Order);
    140    CBLAS_CallFromC = 0;
    141    RowMajorStrg = 0;
    142    return;
    143 }
    144