swiftnav: cblas_dsbmv.c Source File

Go to the documentation of this file.
00001 /*
00002  *
00003  * cblas_dsbmv.c
00004  * This program is a C interface to dsbmv.
00005  * Written by Keita Teranishi
00006  * 4/6/1998
00007  *
00008  */
00009 
00010 #include "cblas.h"
00011 #include "cblas_f77.h"
00012 void cblas_dsbmv(const enum CBLAS_ORDER order,
00013                  const enum CBLAS_UPLO Uplo, const int N, const int K,
00014                  const double alpha, const double  *A, const int lda,
00015                  const double  *X, const int incX, const double beta,
00016                  double  *Y, const int incY)
00017 {
00018    char UL;
00019 #ifdef F77_CHAR
00020    F77_CHAR F77_UL;
00021 #else
00022    #define F77_UL &UL   
00023 #endif
00024 #ifdef F77_INT
00025    F77_INT F77_N=N, F77_K=K, F77_lda=lda, F77_incX=incX, F77_incY=incY;
00026 #else
00027    #define F77_N N
00028    #define F77_K K
00029    #define F77_lda lda
00030    #define F77_incX incX
00031    #define F77_incY incY
00032 #endif
00033    extern int CBLAS_CallFromC;
00034    extern int RowMajorStrg;
00035    RowMajorStrg = 0;
00036 
00037    CBLAS_CallFromC = 1;
00038    if (order == CblasColMajor)
00039    {
00040       if (Uplo == CblasUpper) UL = 'U';
00041       else if (Uplo == CblasLower) UL = 'L';
00042       else 
00043       {
00044          cblas_xerbla(2, "cblas_dsbmv","Illegal Uplo setting, %d\n",Uplo );
00045          CBLAS_CallFromC = 0;
00046          RowMajorStrg = 0;
00047          return;
00048       }
00049       #ifdef F77_CHAR
00050          F77_UL = C2F_CHAR(&UL);
00051       #endif
00052       F77_dsbmv(F77_UL, &F77_N, &F77_K, &alpha, A, &F77_lda, X,  
00053                      &F77_incX, &beta, Y, &F77_incY);
00054    }
00055    else if (order == CblasRowMajor)
00056    {
00057       RowMajorStrg = 1;
00058       if (Uplo == CblasUpper) UL = 'L';
00059       else if (Uplo == CblasLower) UL = 'U';
00060       else 
00061       {
00062          cblas_xerbla(2, "cblas_dsbmv","Illegal Uplo setting, %d\n", Uplo);
00063          CBLAS_CallFromC = 0;
00064          RowMajorStrg = 0;
00065          return;
00066       }
00067       #ifdef F77_CHAR
00068          F77_UL = C2F_CHAR(&UL);
00069       #endif
00070       F77_dsbmv(F77_UL, &F77_N, &F77_K, &alpha, 
00071                      A ,&F77_lda, X,&F77_incX, &beta, Y, &F77_incY);
00072    }
00073    else cblas_xerbla(1, "cblas_dsbmv", "Illegal Order setting, %d\n", order);
00074    CBLAS_CallFromC = 0;
00075    RowMajorStrg = 0;
00076    return;
00077 }