1/*
2 *
3 * cblas_dsyr2.c
4 * This program is a C interface to dsyr2.
5 * Written by Keita Teranishi
6 * 4/6/1998
7 *
8 */
9
10#include "cblas.h"
11#include "cblas_f77.h"
12void cblas_dsyr2(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
13                const int N, const double  alpha, const double  *X,
14                const int incX, const double  *Y, const int incY, double  *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_dsyr2","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_dsyr2(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_dsyr2","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_dsyr2(F77_UL, &F77_N, &alpha, X, &F77_incX, Y, &F77_incY,  A,
71                    &F77_lda);
72   } else cblas_xerbla(1, "cblas_dsyr2", "Illegal Order setting, %d\n", order);
73   CBLAS_CallFromC = 0;
74   RowMajorStrg = 0;
75   return;
76}
77