swiftnav: cblas_ssymm.c Source File

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00001 /*
00002  *
00003  * cblas_ssymm.c
00004  * This program is a C interface to ssymm.
00005  * Written by Keita Teranishi
00006  * 4/8/1998
00007  *
00008  */
00009 
00010 #include "cblas.h"
00011 #include "cblas_f77.h"
00012 void cblas_ssymm(const enum CBLAS_ORDER Order, const enum CBLAS_SIDE Side,
00013                  const enum CBLAS_UPLO Uplo, const int M, const int N,
00014                  const float alpha, const float  *A, const int lda,
00015                  const float  *B, const int ldb, const float beta,
00016                  float  *C, const int ldc)
00017 {
00018    char SD, UL;   
00019 #ifdef F77_CHAR
00020    F77_CHAR F77_SD, F77_UL;
00021 #else
00022    #define F77_SD &SD  
00023    #define F77_UL &UL  
00024 #endif
00025 
00026 #ifdef F77_INT
00027    F77_INT F77_M=M, F77_N=N, F77_lda=lda, F77_ldb=ldb;
00028    F77_INT F77_ldc=ldc;
00029 #else
00030    #define F77_M M
00031    #define F77_N N
00032    #define F77_lda lda
00033    #define F77_ldb ldb
00034    #define F77_ldc ldc
00035 #endif
00036 
00037    extern int CBLAS_CallFromC;
00038    extern int RowMajorStrg;
00039    RowMajorStrg = 0;
00040    CBLAS_CallFromC = 1;
00041 
00042    if( Order == CblasColMajor )
00043    {
00044       if( Side == CblasRight) SD='R';
00045       else if ( Side == CblasLeft ) SD='L';
00046       else 
00047       {
00048          cblas_xerbla(2, "cblas_ssymm", 
00049                        "Illegal Side setting, %d\n", Side);
00050          CBLAS_CallFromC = 0;
00051          RowMajorStrg = 0;
00052          return;
00053       }
00054 
00055       if( Uplo == CblasUpper) UL='U';
00056       else if ( Uplo == CblasLower ) UL='L';
00057       else 
00058       {
00059          cblas_xerbla(3, "cblas_ssymm", 
00060                        "Illegal Uplo setting, %d\n", Uplo);
00061          CBLAS_CallFromC = 0;
00062          RowMajorStrg = 0;
00063          return;
00064       }
00065 
00066       #ifdef F77_CHAR
00067          F77_UL = C2F_CHAR(&UL);
00068          F77_SD = C2F_CHAR(&SD);
00069       #endif
00070 
00071       F77_ssymm(F77_SD, F77_UL, &F77_M, &F77_N, &alpha, A, &F77_lda, B, &F77_ldb, &beta, C, &F77_ldc);
00072    } else if (Order == CblasRowMajor)
00073    {
00074       RowMajorStrg = 1;
00075       if( Side == CblasRight) SD='L';
00076       else if ( Side == CblasLeft ) SD='R';
00077       else 
00078       {
00079          cblas_xerbla(2, "cblas_ssymm", 
00080                        "Illegal Side setting, %d\n", Side);
00081          CBLAS_CallFromC = 0;
00082          RowMajorStrg = 0;
00083          return;
00084       }
00085 
00086       if( Uplo == CblasUpper) UL='L';
00087       else if ( Uplo == CblasLower ) UL='U';
00088       else 
00089       {
00090          cblas_xerbla(3, "cblas_ssymm", 
00091                        "Illegal Uplo setting, %d\n", Uplo);
00092          CBLAS_CallFromC = 0;
00093          RowMajorStrg = 0;
00094          return;
00095       }
00096 
00097       #ifdef F77_CHAR
00098          F77_UL = C2F_CHAR(&UL);
00099          F77_SD = C2F_CHAR(&SD);
00100       #endif
00101 
00102       F77_ssymm(F77_SD, F77_UL, &F77_N, &F77_M, &alpha, A, &F77_lda, B, &F77_ldb, &beta, C, &F77_ldc);
00103    } else  cblas_xerbla(1, "cblas_ssymm",
00104                      "Illegal Order setting, %d\n", Order);
00105    CBLAS_CallFromC = 0;
00106    RowMajorStrg = 0;
00107    return;
00108 }