01: /*
02:  *
03:  * cblas_ssyr2.c
04:  * This program is a C interface to ssyr2.
05:  * Written by Keita Teranishi
06:  * 4/6/1998
07:  *
08:  */
09: 
10: #include "cblas.h"
11: #include "cblas_f77.h"
12: void cblas_ssyr2(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:                 const int lda)
16: {
17:    char UL;
18: #ifdef F77_CHAR
19:    F77_CHAR F77_UL;
20: #else
21:    #define F77_UL &UL
22: #endif
23: 
24: #ifdef F77_INT
25:    F77_INT F77_N=N, F77_incX=incX, F77_incY=incY, F77__lda=lda;
26: #else
27:    #define F77_N N
28:    #define F77_incX incX
29:    #define F77_incY incY
30:    #define F77_lda  lda
31: #endif
32: 
33:    extern int CBLAS_CallFromC;
34:    extern int RowMajorStrg;
35:    RowMajorStrg = 0;
36:    CBLAS_CallFromC = 1;
37:    if (order == CblasColMajor)
38:    {
39:       if (Uplo == CblasLower) UL = 'L';
40:       else if (Uplo == CblasUpper) UL = 'U';
41:       else
42:       {
43:          cblas_xerbla(2, "cblas_ssyr2","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: 
52:       F77_ssyr2(F77_UL, &F77_N, &alpha, X, &F77_incX, Y, &F77_incY, A,
53:                     &F77_lda);
54: 
55:    }  else if (order == CblasRowMajor)
56:    {
57:       RowMajorStrg = 1;
58:       if (Uplo == CblasLower) UL = 'U';
59:       else if (Uplo == CblasUpper) UL = 'L';
60:       else
61:       {
62:          cblas_xerbla(2, "cblas_ssyr2","Illegal Uplo setting, %d\n",Uplo );
63:          CBLAS_CallFromC = 0;
64:          RowMajorStrg = 0;
65:          return;
66:       }
67:       #ifdef F77_CHAR
68:          F77_UL = C2F_CHAR(&UL);
69:       #endif
70:       F77_ssyr2(F77_UL, &F77_N, &alpha, X, &F77_incX, Y, &F77_incY,  A,
71:                     &F77_lda);
72:    } else cblas_xerbla(1, "cblas_ssyr2", "Illegal Order setting, %d\n", order);
73:    CBLAS_CallFromC = 0;
74:    RowMajorStrg = 0;
75:    return;
76: }
77: