01: /*
02:  *
03:  * cblas_sspr2.c
04:  * This program is a C interface to sspr2.
05:  * Written by Keita Teranishi
06:  * 4/6/1998
07:  *
08:  */
09: 
10: #include "cblas.h"
11: #include "cblas_f77.h"
12: void cblas_sspr2(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
13:                 const int N, const float  alpha, const float  *X,
14:                 const int incX, const float  *Y, const int incY, float  *A)
15: {
16:    char UL;
17: #ifdef F77_CHAR
18:    F77_CHAR F77_UL;
19: #else
20:    #define F77_UL &UL
21: #endif
22: 
23: #ifdef F77_INT
24:    F77_INT F77_N=N, F77_incX=incX, F77_incY=incY;
25: #else
26:    #define F77_N N
27:    #define F77_incX incX
28:    #define F77_incY incY
29: #endif
30: 
31:    extern int CBLAS_CallFromC;
32:    extern int RowMajorStrg;
33:    RowMajorStrg = 0;
34:    CBLAS_CallFromC = 1;
35:    if (order == CblasColMajor)
36:    {
37:       if (Uplo == CblasLower) UL = 'L';
38:       else if (Uplo == CblasUpper) UL = 'U';
39:       else
40:       {
41:          cblas_xerbla(2, "cblas_sspr2","Illegal Uplo setting, %d\n",Uplo );
42:          CBLAS_CallFromC = 0;
43:          RowMajorStrg = 0;
44:          return;
45:       }
46:       #ifdef F77_CHAR
47:          F77_UL = C2F_CHAR(&UL);
48:       #endif
49: 
50:       F77_sspr2(F77_UL, &F77_N, &alpha, X, &F77_incX, Y, &F77_incY, A);
51: 
52:    }  else if (order == CblasRowMajor)
53:    {
54:       RowMajorStrg = 1;
55:       if (Uplo == CblasLower) UL = 'U';
56:       else if (Uplo == CblasUpper) UL = 'L';
57:       else
58:       {
59:          cblas_xerbla(2, "cblas_sspr2","Illegal Uplo setting, %d\n",Uplo );
60:          CBLAS_CallFromC = 0;
61:          RowMajorStrg = 0;
62:          return;
63:       }
64:       #ifdef F77_CHAR
65:          F77_UL = C2F_CHAR(&UL);
66:       #endif
67:       F77_sspr2(F77_UL, &F77_N, &alpha, X, &F77_incX, Y, &F77_incY,  A);
68:    } else cblas_xerbla(1, "cblas_sspr2", "Illegal Order setting, %d\n", order);
69:    CBLAS_CallFromC = 0;
70:    RowMajorStrg = 0;
71: }
72: