swiftnav: cblas_zherk.c Source File

Go to the documentation of this file.
00001 /*
00002  *
00003  * cblas_zherk.c
00004  * This program is a C interface to zherk.
00005  * Written by Keita Teranishi
00006  * 4/8/1998
00007  *
00008  */
00009 
00010 #include "cblas.h"
00011 #include "cblas_f77.h"
00012 void cblas_zherk(const enum CBLAS_ORDER Order, const enum CBLAS_UPLO Uplo,
00013                  const enum CBLAS_TRANSPOSE Trans, const int N, const int K,
00014                  const double alpha, const void *A, const int lda,
00015                  const double beta, void *C, const int ldc)
00016 {
00017    char UL, TR;   
00018 #ifdef F77_CHAR
00019    F77_CHAR F77_TR, F77_UL;
00020 #else
00021    #define F77_TR &TR  
00022    #define F77_UL &UL  
00023 #endif
00024 
00025 #ifdef F77_INT
00026    F77_INT F77_N=N, F77_K=K, F77_lda=lda;
00027    F77_INT F77_ldc=ldc;
00028 #else
00029    #define F77_N N
00030    #define F77_K K
00031    #define F77_lda lda
00032    #define F77_ldc ldc
00033 #endif
00034 
00035    extern int CBLAS_CallFromC;
00036    extern int RowMajorStrg;
00037    RowMajorStrg = 0;
00038    CBLAS_CallFromC = 1;
00039 
00040    if( Order == CblasColMajor )
00041    {
00042       if( Uplo == CblasUpper) UL='U';
00043       else if ( Uplo == CblasLower ) UL='L';
00044       else 
00045       {
00046          cblas_xerbla(2, "cblas_zherk", "Illegal Uplo setting, %d\n", Uplo);
00047          CBLAS_CallFromC = 0;
00048          RowMajorStrg = 0;
00049          return;
00050       }
00051 
00052       if( Trans == CblasTrans) TR ='T';
00053       else if ( Trans == CblasConjTrans ) TR='C';
00054       else if ( Trans == CblasNoTrans )   TR='N';
00055       else 
00056       {
00057          cblas_xerbla(3, "cblas_zherk", "Illegal Trans setting, %d\n", Trans);
00058          CBLAS_CallFromC = 0;
00059          RowMajorStrg = 0;
00060          return;
00061       }
00062 
00063       #ifdef F77_CHAR
00064          F77_UL = C2F_CHAR(&UL);
00065          F77_TR = C2F_CHAR(&TR);
00066       #endif
00067 
00068       F77_zherk(F77_UL, F77_TR, &F77_N, &F77_K, &alpha, A, &F77_lda,
00069                      &beta, C, &F77_ldc);
00070    } else if (Order == CblasRowMajor)
00071    {
00072       RowMajorStrg = 1;
00073       if( Uplo == CblasUpper) UL='L';
00074       else if ( Uplo == CblasLower ) UL='U';
00075       else 
00076       {
00077          cblas_xerbla(3, "cblas_zherk", "Illegal Uplo setting, %d\n", Uplo);
00078          CBLAS_CallFromC = 0;
00079          RowMajorStrg = 0;
00080          return;
00081       }
00082       if( Trans == CblasTrans) TR ='N';
00083       else if ( Trans == CblasConjTrans ) TR='N';
00084       else if ( Trans == CblasNoTrans )   TR='C';
00085       else 
00086       {
00087          cblas_xerbla(3, "cblas_zherk", "Illegal Trans setting, %d\n", Trans);
00088          CBLAS_CallFromC = 0;
00089          RowMajorStrg = 0;
00090          return;
00091       }
00092 
00093       #ifdef F77_CHAR
00094          F77_UL = C2F_CHAR(&UL);
00095          F77_SD = C2F_CHAR(&SD);
00096       #endif
00097 
00098       F77_zherk(F77_UL, F77_TR, &F77_N, &F77_K, &alpha, A, &F77_lda,
00099                 &beta, C, &F77_ldc);
00100    } 
00101    else  cblas_xerbla(1, "cblas_zherk", "Illegal Order setting, %d\n", Order);
00102    CBLAS_CallFromC = 0;
00103    RowMajorStrg = 0;
00104    return;
00105 }