1 /*
2 *
3 * cblas_ssymv.c
4 * This program is a C interface to ssymv.
5 * Written by Keita Teranishi
6 * 4/6/1998
7 *
8 */
9
10 #include "cblas.h"
11 #include "cblas_f77.h"
cblas_ssymv(const CBLAS_LAYOUT layout,const CBLAS_UPLO Uplo,const CBLAS_INDEX N,const float alpha,const float * A,const CBLAS_INDEX lda,const float * X,const CBLAS_INDEX incX,const float beta,float * Y,const CBLAS_INDEX incY)12 void cblas_ssymv(const CBLAS_LAYOUT layout,
13 const CBLAS_UPLO Uplo, const CBLAS_INDEX N,
14 const float alpha, const float *A, const CBLAS_INDEX lda,
15 const float *X, const CBLAS_INDEX incX, const float beta,
16 float *Y, const CBLAS_INDEX incY)
17 {
18 char UL;
19 #ifdef F77_CHAR
20 F77_CHAR F77_UL;
21 #else
22 #define F77_UL &UL
23 #endif
24 #ifdef F77_INT
25 F77_INT F77_N=N, F77_lda=lda, F77_incX=incX, F77_incY=incY;
26 #else
27 #define F77_N N
28 #define F77_lda lda
29 #define F77_incX incX
30 #define F77_incY incY
31 #endif
32 extern int CBLAS_CallFromC;
33 extern int RowMajorStrg;
34 RowMajorStrg = 0;
35
36 CBLAS_CallFromC = 1;
37 if (layout == CblasColMajor)
38 {
39 if (Uplo == CblasUpper) UL = 'U';
40 else if (Uplo == CblasLower) UL = 'L';
41 else
42 {
43 cblas_xerbla(2, "cblas_ssymv","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 F77_ssymv(F77_UL, &F77_N, &alpha, A, &F77_lda, X,
52 &F77_incX, &beta, Y, &F77_incY);
53 }
54 else if (layout == CblasRowMajor)
55 {
56 RowMajorStrg = 1;
57 if (Uplo == CblasUpper) UL = 'L';
58 else if (Uplo == CblasLower) UL = 'U';
59 else
60 {
61 cblas_xerbla(2, "cblas_ssymv","Illegal Uplo setting, %d\n", Uplo);
62 CBLAS_CallFromC = 0;
63 RowMajorStrg = 0;
64 return;
65 }
66 #ifdef F77_CHAR
67 F77_UL = C2F_CHAR(&UL);
68 #endif
69 F77_ssymv(F77_UL, &F77_N, &alpha,
70 A ,&F77_lda, X,&F77_incX, &beta, Y, &F77_incY);
71 }
72 else cblas_xerbla(1, "cblas_ssymv", "Illegal layout setting, %d\n", layout);
73 CBLAS_CallFromC = 0;
74 RowMajorStrg = 0;
75 return;
76 }
77