001: /*
002:  *
003:  * cblas_strmv.c
004:  * This program is a C interface to strmv.
005:  * Written by Keita Teranishi
006:  * 4/6/1998
007:  *
008:  */
009: #include "cblas.h"
010: #include "cblas_f77.h"
011: void cblas_strmv(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
012:                  const enum CBLAS_TRANSPOSE TransA, const enum CBLAS_DIAG Diag,
013:                  const int N, const float  *A, const int lda,
014:                  float  *X, const int incX)
015: 
016: {
017:    char TA;
018:    char UL;
019:    char DI;
020: #ifdef F77_CHAR
021:    F77_CHAR F77_TA, F77_UL, F77_DI;
022: #else
023:    #define F77_TA &TA
024:    #define F77_UL &UL
025:    #define F77_DI &DI
026: #endif
027: #ifdef F77_INT
028:    F77_INT F77_N=N, F77_lda=lda, F77_incX=incX;
029: #else
030:    #define F77_N N
031:    #define F77_lda lda
032:    #define F77_incX incX
033: #endif
034:    extern int CBLAS_CallFromC;
035:    extern int RowMajorStrg;
036:    RowMajorStrg = 0;
037: 
038:    CBLAS_CallFromC = 1;
039:    if (order == CblasColMajor)
040:    {
041:       if (Uplo == CblasUpper) UL = 'U';
042:       else if (Uplo == CblasLower) UL = 'L';
043:       else
044:       {
045:          cblas_xerbla(2, "cblas_strmv","Illegal Uplo setting, %d\n", Uplo);
046:          CBLAS_CallFromC = 0;
047:          RowMajorStrg = 0;
048:          return;
049:       }
050:       if (TransA == CblasNoTrans) TA = 'N';
051:       else if (TransA == CblasTrans) TA = 'T';
052:       else if (TransA == CblasConjTrans) TA = 'C';
053:       else
054:       {
055:          cblas_xerbla(3, "cblas_strmv","Illegal TransA setting, %d\n", TransA);
056:          CBLAS_CallFromC = 0;
057:          RowMajorStrg = 0;
058:          return;
059:       }
060:       if (Diag == CblasUnit) DI = 'U';
061:       else if (Diag == CblasNonUnit) DI = 'N';
062:       else
063:       {
064:          cblas_xerbla(4, "cblas_strmv","Illegal Diag setting, %d\n", Diag);
065:          CBLAS_CallFromC = 0;
066:          RowMajorStrg = 0;
067:          return;
068:       }
069:       #ifdef F77_CHAR
070:          F77_UL = C2F_CHAR(&UL);
071:          F77_TA = C2F_CHAR(&TA);
072:          F77_DI = C2F_CHAR(&DI);
073:       #endif
074:       F77_strmv( F77_UL, F77_TA, F77_DI, &F77_N, A, &F77_lda, X,
075:                       &F77_incX);
076:    }
077:    else if (order == CblasRowMajor)
078:    {
079:       RowMajorStrg = 1;
080:       if (Uplo == CblasUpper) UL = 'L';
081:       else if (Uplo == CblasLower) UL = 'U';
082:       else
083:       {
084:          cblas_xerbla(2, "cblas_strmv","Illegal Uplo setting, %d\n", Uplo);
085:          CBLAS_CallFromC = 0;
086:          RowMajorStrg = 0;
087:          return;
088:       }
089: 
090:       if (TransA == CblasNoTrans) TA = 'T';
091:       else if (TransA == CblasTrans) TA = 'N';
092:       else if (TransA == CblasConjTrans) TA = 'N';
093:       else
094:       {
095:          cblas_xerbla(3, "cblas_strmv","Illegal TransA setting, %d\n", TransA);
096:          CBLAS_CallFromC = 0;
097:          RowMajorStrg = 0;
098:          return;
099:       }
100: 
101:       if (Diag == CblasUnit) DI = 'U';
102:       else if (Diag == CblasNonUnit) DI = 'N';
103:       else
104:       {
105:          cblas_xerbla(4, "cblas_strmv","Illegal Diag setting, %d\n", Diag);
106:          CBLAS_CallFromC = 0;
107:          RowMajorStrg = 0;
108:          return;
109:       }
110:       #ifdef F77_CHAR
111:          F77_UL = C2F_CHAR(&UL);
112:          F77_TA = C2F_CHAR(&TA);
113:          F77_DI = C2F_CHAR(&DI);
114:       #endif
115:       F77_strmv( F77_UL, F77_TA, F77_DI, &F77_N, A, &F77_lda, X,
116:                       &F77_incX);
117:    }
118:    else cblas_xerbla(1, "cblas_strmv", "Illegal Order setting, %d\n", order);
119:    CBLAS_CallFromC = 0;
120:    RowMajorStrg = 0;
121:    return;
122: }
123: