cblas_ctrmv.c
Go to the documentation of this file.
00001 /*
00002  * cblas_ctrmv.c
00003  * The program is a C interface to ctrmv.
00004  * 
00005  * Keita Teranishi  3/23/98
00006  *
00007  */
00008 #include "cblas.h"
00009 #include "cblas_f77.h"
00010 void cblas_ctrmv(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
00011                  const enum CBLAS_TRANSPOSE TransA, const enum CBLAS_DIAG Diag,
00012                  const int N, const void  *A, const int lda,
00013                  void  *X, const int incX)
00014 
00015 {
00016    char TA;
00017    char UL;
00018    char DI;
00019 #ifdef F77_CHAR
00020    F77_CHAR F77_TA, F77_UL, F77_DI;
00021 #else
00022    #define F77_TA &TA
00023    #define F77_UL &UL
00024    #define F77_DI &DI   
00025 #endif
00026 #ifdef F77_INT
00027    F77_INT F77_N=N, F77_lda=lda, F77_incX=incX;
00028 #else
00029    #define F77_N N
00030    #define F77_lda lda
00031    #define F77_incX incX
00032 #endif
00033    int n, i=0, tincX; 
00034    float *st=0,*x=(float *)X;
00035    extern int CBLAS_CallFromC;
00036    extern int RowMajorStrg;
00037    RowMajorStrg = 0;
00038 
00039    CBLAS_CallFromC = 1;
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_ctrmv","Illegal Uplo setting, %d\n", Uplo);
00047          CBLAS_CallFromC = 0;
00048          RowMajorStrg = 0;
00049          return;
00050       }
00051       if (TransA == CblasNoTrans) TA = 'N';
00052       else if (TransA == CblasTrans) TA = 'T';
00053       else if (TransA == CblasConjTrans) TA = 'C';
00054       else 
00055       {
00056          cblas_xerbla(3, "cblas_ctrmv","Illegal TransA setting, %d\n", TransA);
00057          CBLAS_CallFromC = 0;
00058          RowMajorStrg = 0;
00059          return;
00060       }
00061       if (Diag == CblasUnit) DI = 'U';
00062       else if (Diag == CblasNonUnit) DI = 'N';
00063       else 
00064       {
00065          cblas_xerbla(4, "cblas_ctrmv","Illegal Diag setting, %d\n", Diag);
00066          CBLAS_CallFromC = 0;
00067          RowMajorStrg = 0;
00068          return;
00069       }
00070       #ifdef F77_CHAR
00071          F77_UL = C2F_CHAR(&UL);
00072          F77_TA = C2F_CHAR(&TA);
00073          F77_DI = C2F_CHAR(&DI);
00074       #endif
00075       F77_ctrmv( F77_UL, F77_TA, F77_DI, &F77_N, A, &F77_lda, X,
00076                       &F77_incX);
00077    }
00078    else if (order == CblasRowMajor)
00079    {
00080       RowMajorStrg = 1;
00081       if (Uplo == CblasUpper) UL = 'L';
00082       else if (Uplo == CblasLower) UL = 'U';
00083       else 
00084       {
00085          cblas_xerbla(2, "cblas_ctrmv","Illegal Uplo setting, %d\n", Uplo);
00086          CBLAS_CallFromC = 0;
00087          RowMajorStrg = 0;
00088          return;
00089       }
00090 
00091       if (TransA == CblasNoTrans) TA = 'T';
00092       else if (TransA == CblasTrans) TA = 'N';
00093       else if (TransA == CblasConjTrans)
00094       {
00095          TA = 'N';
00096          if ( N > 0)
00097          {
00098             if(incX > 0)
00099                tincX = incX;
00100             else
00101                tincX = -incX;
00102             i = tincX << 1;
00103             n = i * N;
00104             st = x + n;
00105             do
00106             {
00107                x[1] = -x[1];
00108                x+= i;
00109             }
00110             while (x != st);
00111             x -= n;
00112          }
00113       }
00114       else 
00115       {
00116          cblas_xerbla(3, "cblas_ctrmv","Illegal TransA setting, %d\n", TransA);
00117          CBLAS_CallFromC = 0;
00118          RowMajorStrg = 0;
00119          return;
00120       }
00121 
00122       if (Diag == CblasUnit) DI = 'U';
00123       else if (Diag == CblasNonUnit) DI = 'N';
00124       else 
00125       {
00126          cblas_xerbla(4, "cblas_ctrmv","Illegal Diag setting, %d\n", Diag);
00127          CBLAS_CallFromC = 0;
00128          RowMajorStrg = 0;
00129          return;
00130       }
00131       #ifdef F77_CHAR
00132          F77_UL = C2F_CHAR(&UL);
00133          F77_TA = C2F_CHAR(&TA);
00134          F77_DI = C2F_CHAR(&DI);
00135       #endif
00136          F77_ctrmv( F77_UL, F77_TA, F77_DI, &F77_N, A, &F77_lda, X,
00137                       &F77_incX);
00138       if (TransA == CblasConjTrans)
00139       {
00140          if (N > 0)
00141          {
00142             do
00143             {
00144                x[1] = -x[1];
00145                x += i;
00146             }
00147             while (x != st);
00148          }
00149       }
00150    }
00151    else cblas_xerbla(1, "cblas_ctrmv", "Illegal Order setting, %d\n", order);
00152    CBLAS_CallFromC = 0;
00153    RowMajorStrg = 0;
00154    return;
00155 }


swiftnav
Author(s):
autogenerated on Sat Jun 8 2019 18:55:15