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1 /*
2  *
3  * cblas_dspmv.c
4  * This program is a C interface to dspmv.
5  * Written by Keita Teranishi
6  * 4/6/1998
7  *
8  */
9 
10 
11 #include "cblas.h"
12 #include "cblas_f77.h"
cblas_dspmv(const enum CBLAS_ORDER order,const enum CBLAS_UPLO Uplo,const int N,const double alpha,const double * AP,const double * X,const int incX,const double beta,double * Y,const int incY)13 void cblas_dspmv(const enum CBLAS_ORDER order,
14                  const enum CBLAS_UPLO Uplo, const int N,
15                  const double alpha, const double  *AP,
16                  const double  *X, const int incX, const double beta,
17                  double  *Y, const int incY)
18 {
19    char UL;
20 #ifdef F77_CHAR
21    F77_CHAR F77_UL;
22 #else
23    #define F77_UL &UL
24 #endif
25 #ifdef F77_INT
26    F77_INT F77_N=N, F77_incX=incX, F77_incY=incY;
27 #else
28    #define F77_N N
29    #define F77_incX incX
30    #define F77_incY incY
31 #endif
32    extern int CBLAS_CallFromC;
33    extern int RowMajorStrg;
34    RowMajorStrg = 0;
35 
36    CBLAS_CallFromC = 1;
37    if (order == CblasColMajor)
38    {
39       if (Uplo == CblasUpper) UL = 'U';
40       else if (Uplo == CblasLower) UL = 'L';
41       else
42       {
43          cblas_xerbla(2, "cblas_dspmv","Illegal Uplo setting, %d\n",Uplo );
44          CBLAS_CallFromC = 0;
45          RowMajorStrg = 0;
46          return;
47       }
48       #ifdef F77_CHAR
49          F77_UL = C2F_CHAR(&UL);
50       #endif
51       F77_dspmv(F77_UL, &F77_N, &alpha, AP, X,
52                      &F77_incX, &beta, Y, &F77_incY);
53    }
54    else if (order == CblasRowMajor)
55    {
56       RowMajorStrg = 1;
57       if (Uplo == CblasUpper) UL = 'L';
58       else if (Uplo == CblasLower) UL = 'U';
59       else
60       {
61          cblas_xerbla(2, "cblas_dspmv","Illegal Uplo setting, %d\n", Uplo);
62          CBLAS_CallFromC = 0;
63          RowMajorStrg = 0;
64          return;
65       }
66       #ifdef F77_CHAR
67          F77_UL = C2F_CHAR(&UL);
68       #endif
69       F77_dspmv(F77_UL, &F77_N, &alpha,
70                      AP, X,&F77_incX, &beta, Y, &F77_incY);
71    }
72    else cblas_xerbla(1, "cblas_dspmv", "Illegal Order setting, %d\n", order);
73    CBLAS_CallFromC = 0;
74    RowMajorStrg = 0;
75    return;
76 }
77