01: /*
02:  * cblas_dspr2.c
03:  * The program is a C interface to dspr2.
04:  *
05:  * Keita Teranishi  5/20/98
06:  *
07:  */
08: #include "cblas.h"
09: #include "cblas_f77.h"
10: void cblas_dspr2(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
11:                 const int N, const double  alpha, const double  *X,
12:                 const int incX, const double  *Y, const int incY, double  *A)
13: {
14:    char UL;
15: #ifdef F77_CHAR
16:    F77_CHAR F77_UL;
17: #else
18:    #define F77_UL &UL
19: #endif
20: 
21: #ifdef F77_INT
22:    F77_INT F77_N=N, F77_incX=incX, F77_incY=incY;
23: #else
24:    #define F77_N N
25:    #define F77_incX incX
26:    #define F77_incY incY
27: #endif
28: 
29:    extern int CBLAS_CallFromC;
30:    extern int RowMajorStrg;
31:    RowMajorStrg = 0;
32:    CBLAS_CallFromC = 1;
33:    if (order == CblasColMajor)
34:    {
35:       if (Uplo == CblasLower) UL = 'L';
36:       else if (Uplo == CblasUpper) UL = 'U';
37:       else
38:       {
39:          cblas_xerbla(2, "cblas_dspr2","Illegal Uplo setting, %d\n",Uplo );
40:          CBLAS_CallFromC = 0;
41:          RowMajorStrg = 0;
42:          return;
43:       }
44:       #ifdef F77_CHAR
45:          F77_UL = C2F_CHAR(&UL);
46:       #endif
47: 
48:       F77_dspr2(F77_UL, &F77_N, &alpha, X, &F77_incX, Y, &F77_incY, A);
49: 
50:    }  else if (order == CblasRowMajor)
51:    {
52:       RowMajorStrg = 1;
53:       if (Uplo == CblasLower) UL = 'U';
54:       else if (Uplo == CblasUpper) UL = 'L';
55:       else
56:       {
57:          cblas_xerbla(2, "cblas_dspr2","Illegal Uplo setting, %d\n",Uplo );
58:          CBLAS_CallFromC = 0;
59:          RowMajorStrg = 0;
60:          return;
61:       }
62:       #ifdef F77_CHAR
63:          F77_UL = C2F_CHAR(&UL);
64:       #endif
65:       F77_dspr2(F77_UL, &F77_N, &alpha, X, &F77_incX, Y, &F77_incY,  A);
66:    } else cblas_xerbla(1, "cblas_dspr2", "Illegal Order setting, %d\n", order);
67:    CBLAS_CallFromC = 0;
68:    RowMajorStrg = 0;
69:    return;
70: }
71: