01: /*
02:  *
03:  * cblas_dspmv.c
04:  * This program is a C interface to dspmv.
05:  * Written by Keita Teranishi
06:  * 4/6/1998
07:  *
08:  */
09: 
10: 
11: #include "cblas.h"
12: #include "cblas_f77.h"
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: