1 /*
2 * cblas_dspr2.c
3 * The program is a C interface to dspr2.
4 *
5 * Keita Teranishi 5/20/98
6 *
7 */
8 #include "cblas.h"
9 #include "cblas_f77.h"
cblas_dspr2(const CBLAS_LAYOUT layout,const CBLAS_UPLO Uplo,const CBLAS_INDEX N,const double alpha,const double * X,const CBLAS_INDEX incX,const double * Y,const CBLAS_INDEX incY,double * A)10 void cblas_dspr2(const CBLAS_LAYOUT layout, const CBLAS_UPLO Uplo,
11 const CBLAS_INDEX N, const double alpha, const double *X,
12 const CBLAS_INDEX incX, const double *Y, const CBLAS_INDEX 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 (layout == 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 (layout == 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 layout setting, %d\n", layout);
67 CBLAS_CallFromC = 0;
68 RowMajorStrg = 0;
69 return;
70 }
71