001: /*
002:  *
003:  * cblas_ssyr2k.c
004:  * This program is a C interface to ssyr2k.
005:  * Written by Keita Teranishi
006:  * 4/6/1998
007:  *
008:  */
009: 
010: #include "cblas.h"
011: #include "cblas_f77.h"
012: void cblas_ssyr2k(const enum CBLAS_ORDER Order, const enum CBLAS_UPLO Uplo,
013:                   const enum CBLAS_TRANSPOSE Trans, const int N, const int K,
014:                   const float alpha, const float  *A, const int lda,
015:                   const float  *B, const int ldb, const float beta,
016:                   float  *C, const int ldc)
017: {
018:    char UL, TR;
019: #ifdef F77_CHAR
020:    F77_CHAR F77_TA, F77_UL;
021: #else
022:    #define F77_TR &TR
023:    #define F77_UL &UL
024: #endif
025: 
026: #ifdef F77_INT
027:    F77_INT F77_N=N, F77_K=K, F77_lda=lda, F77_ldb=ldb;
028:    F77_INT F77_ldc=ldc;
029: #else
030:    #define F77_N N
031:    #define F77_K K
032:    #define F77_lda lda
033:    #define F77_ldb ldb
034:    #define F77_ldc ldc
035: #endif
036: 
037:    extern int CBLAS_CallFromC;
038:    extern int RowMajorStrg;
039:    RowMajorStrg = 0;
040:    CBLAS_CallFromC = 1;
041: 
042:    if( Order == CblasColMajor )
043:    {
044: 
045:       if( Uplo == CblasUpper) UL='U';
046:       else if ( Uplo == CblasLower ) UL='L';
047:       else
048:       {
049:          cblas_xerbla(2, "cblas_ssyr2k",
050:                        "Illegal Uplo setting, %d\n", Uplo);
051:          CBLAS_CallFromC = 0;
052:          RowMajorStrg = 0;
053:          return;
054:       }
055: 
056:       if( Trans == CblasTrans) TR ='T';
057:       else if ( Trans == CblasConjTrans ) TR='C';
058:       else if ( Trans == CblasNoTrans )   TR='N';
059:       else
060:       {
061:          cblas_xerbla(3, "cblas_ssyr2k",
062:                        "Illegal Trans setting, %d\n", Trans);
063:          CBLAS_CallFromC = 0;
064:          RowMajorStrg = 0;
065:          return;
066:       }
067: 
068: 
069:       #ifdef F77_CHAR
070:          F77_UL = C2F_CHAR(&UL);
071:          F77_TR = C2F_CHAR(&TR);
072:       #endif
073: 
074:       F77_ssyr2k(F77_UL, F77_TR, &F77_N, &F77_K, &alpha, A, &F77_lda, B, &F77_ldb, &beta, C, &F77_ldc);
075:    } else if (Order == CblasRowMajor)
076:    {
077:       RowMajorStrg = 1;
078:       if( Uplo == CblasUpper) UL='L';
079:       else if ( Uplo == CblasLower ) UL='U';
080:       else
081:       {
082:          cblas_xerbla(3, "cblas_ssyr2k",
083:                        "Illegal Uplo setting, %d\n", Uplo);
084:          CBLAS_CallFromC = 0;
085:          RowMajorStrg = 0;
086:          return;
087:       }
088:       if( Trans == CblasTrans) TR ='N';
089:       else if ( Trans == CblasConjTrans ) TR='N';
090:       else if ( Trans == CblasNoTrans )   TR='T';
091:       else
092:       {
093:          cblas_xerbla(3, "cblas_ssyr2k",
094:                        "Illegal Trans setting, %d\n", Trans);
095:          CBLAS_CallFromC = 0;
096:          RowMajorStrg = 0;
097:          return;
098:       }
099: 
100:       #ifdef F77_CHAR
101:          F77_UL = C2F_CHAR(&UL);
102:          F77_TR = C2F_CHAR(&TR);
103:       #endif
104: 
105:       F77_ssyr2k(F77_UL, F77_TR, &F77_N, &F77_K, &alpha, A, &F77_lda, B, &F77_ldb, &beta, C, &F77_ldc);
106:    } else  cblas_xerbla(1, "cblas_ssyr2k",
107:                      "Illegal Order setting, %d\n", Order);
108:    CBLAS_CallFromC = 0;
109:    RowMajorStrg = 0;
110:    return;
111: }
112: