001: /*
002:  *
003:  * cblas_strsm.c
004:  * This program is a C interface to strsm.
005:  * Written by Keita Teranishi
006:  * 4/6/1998
007:  *
008:  */
009: 
010: #include "cblas.h"
011: #include "cblas_f77.h"
012: void cblas_strsm(const enum CBLAS_ORDER Order, const enum CBLAS_SIDE Side,
013:                  const enum CBLAS_UPLO Uplo, const enum CBLAS_TRANSPOSE TransA,
014:                  const enum CBLAS_DIAG Diag, const int M, const int N,
015:                  const float alpha, const float  *A, const int lda,
016:                  float  *B, const int ldb)
017: 
018: {
019:    char UL, TA, SD, DI;
020: #ifdef F77_CHAR
021:    F77_CHAR F77_TA, F77_UL, F77_SD, F77_DI;
022: #else
023:    #define F77_TA &TA
024:    #define F77_UL &UL
025:    #define F77_SD &SD
026:    #define F77_DI &DI
027: #endif
028: 
029: #ifdef F77_INT
030:    F77_INT F77_N=M, F77_N=N, F77_lda=lda, F77_ldb=ldb;
031: #else
032:    #define F77_M M
033:    #define F77_N N
034:    #define F77_lda lda
035:    #define F77_ldb ldb
036: #endif
037: 
038:    extern int CBLAS_CallFromC;
039:    extern int RowMajorStrg;
040:    RowMajorStrg = 0;
041:    CBLAS_CallFromC = 1;
042: 
043:    if( Order == CblasColMajor )
044:    {
045:       if( Side == CblasRight) SD='R';
046:       else if ( Side == CblasLeft ) SD='L';
047:       else
048:       {
049:          cblas_xerbla(2, "cblas_strsm", "Illegal Side setting, %d\n", Side);
050:          CBLAS_CallFromC = 0;
051:          RowMajorStrg = 0;
052:          return;
053:       }
054:       if( Uplo == CblasUpper) UL='U';
055:       else if ( Uplo == CblasLower ) UL='L';
056:       else
057:       {
058:          cblas_xerbla(3, "cblas_strsm", "Illegal Uplo setting, %d\n", Uplo);
059:          CBLAS_CallFromC = 0;
060:          RowMajorStrg = 0;
061:          return;
062:       }
063:       if( TransA == CblasTrans) TA ='T';
064:       else if ( TransA == CblasConjTrans ) TA='C';
065:       else if ( TransA == CblasNoTrans )   TA='N';
066:       else
067:       {
068:          cblas_xerbla(4, "cblas_strsm", "Illegal Trans setting, %d\n", TransA);
069:          CBLAS_CallFromC = 0;
070:          RowMajorStrg = 0;
071:          return;
072:       }
073:       if( Diag == CblasUnit ) DI='U';
074:       else if ( Diag == CblasNonUnit ) DI='N';
075:       else
076:       {
077:          cblas_xerbla(5, "cblas_strsm", "Illegal Diag setting, %d\n", Diag);
078:          CBLAS_CallFromC = 0;
079:          RowMajorStrg = 0;
080:          return;
081:       }
082:       #ifdef F77_CHAR
083:          F77_UL = C2F_CHAR(&UL);
084:          F77_TA = C2F_CHAR(&TA);
085:          F77_SD = C2F_CHAR(&SD);
086:          F77_DI = C2F_CHAR(&DI);
087:       #endif
088: 
089:       F77_strsm(F77_SD, F77_UL, F77_TA, F77_DI, &F77_M, &F77_N, &alpha, A, &F77_lda, B, &F77_ldb);
090:    } else if (Order == CblasRowMajor)
091:    {
092:       RowMajorStrg = 1;
093:       if( Side == CblasRight) SD='L';
094:       else if ( Side == CblasLeft ) SD='R';
095:       else
096:       {
097:          cblas_xerbla(2, "cblas_strsm", "Illegal Side setting, %d\n", Side);
098:          CBLAS_CallFromC = 0;
099:          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: