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"
cblas_dsyr2(const enum CBLAS_ORDER order,const enum CBLAS_UPLO Uplo,const int N,const double alpha,const double * X,const int incX,const double * Y,const int incY,double * A,const int lda)12 void 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