1 /*
2 *
3 * cblas_ssyr2k.c
4 * This program is a C interface to ssyr2k.
5 * Written by Keita Teranishi
6 * 4/6/1998
7 *
8 */
9
10 #include "cblas.h"
11 #include "cblas_f77.h"
cblas_ssyr2k(const CBLAS_LAYOUT layout,const CBLAS_UPLO Uplo,const CBLAS_TRANSPOSE Trans,const CBLAS_INDEX N,const CBLAS_INDEX K,const float alpha,const float * A,const CBLAS_INDEX lda,const float * B,const CBLAS_INDEX ldb,const float beta,float * C,const CBLAS_INDEX ldc)12 void cblas_ssyr2k(const CBLAS_LAYOUT layout, const CBLAS_UPLO Uplo,
13 const CBLAS_TRANSPOSE Trans, const CBLAS_INDEX N, const CBLAS_INDEX K,
14 const float alpha, const float *A, const CBLAS_INDEX lda,
15 const float *B, const CBLAS_INDEX ldb, const float beta,
16 float *C, const CBLAS_INDEX ldc)
17 {
18 char UL, TR;
19 #ifdef F77_CHAR
20 F77_CHAR F77_TA, F77_UL;
21 #else
22 #define F77_TR &TR
23 #define F77_UL &UL
24 #endif
25
26 #ifdef F77_INT
27 F77_INT F77_N=N, F77_K=K, F77_lda=lda, F77_ldb=ldb;
28 F77_INT F77_ldc=ldc;
29 #else
30 #define F77_N N
31 #define F77_K K
32 #define F77_lda lda
33 #define F77_ldb ldb
34 #define F77_ldc ldc
35 #endif
36
37 extern int CBLAS_CallFromC;
38 extern int RowMajorStrg;
39 RowMajorStrg = 0;
40 CBLAS_CallFromC = 1;
41
42 if( layout == CblasColMajor )
43 {
44
45 if( Uplo == CblasUpper) UL='U';
46 else if ( Uplo == CblasLower ) UL='L';
47 else
48 {
49 cblas_xerbla(2, "cblas_ssyr2k",
50 "Illegal Uplo setting, %d\n", Uplo);
51 CBLAS_CallFromC = 0;
52 RowMajorStrg = 0;
53 return;
54 }
55
56 if( Trans == CblasTrans) TR ='T';
57 else if ( Trans == CblasConjTrans ) TR='C';
58 else if ( Trans == CblasNoTrans ) TR='N';
59 else
60 {
61 cblas_xerbla(3, "cblas_ssyr2k",
62 "Illegal Trans setting, %d\n", Trans);
63 CBLAS_CallFromC = 0;
64 RowMajorStrg = 0;
65 return;
66 }
67
68
69 #ifdef F77_CHAR
70 F77_UL = C2F_CHAR(&UL);
71 F77_TR = C2F_CHAR(&TR);
72 #endif
73
74 F77_ssyr2k(F77_UL, F77_TR, &F77_N, &F77_K, &alpha, A, &F77_lda, B, &F77_ldb, &beta, C, &F77_ldc);
75 } else if (layout == CblasRowMajor)
76 {
77 RowMajorStrg = 1;
78 if( Uplo == CblasUpper) UL='L';
79 else if ( Uplo == CblasLower ) UL='U';
80 else
81 {
82 cblas_xerbla(3, "cblas_ssyr2k",
83 "Illegal Uplo setting, %d\n", Uplo);
84 CBLAS_CallFromC = 0;
85 RowMajorStrg = 0;
86 return;
87 }
88 if( Trans == CblasTrans) TR ='N';
89 else if ( Trans == CblasConjTrans ) TR='N';
90 else if ( Trans == CblasNoTrans ) TR='T';
91 else
92 {
93 cblas_xerbla(3, "cblas_ssyr2k",
94 "Illegal Trans setting, %d\n", Trans);
95 CBLAS_CallFromC = 0;
96 RowMajorStrg = 0;
97 return;
98 }
99
100 #ifdef F77_CHAR
101 F77_UL = C2F_CHAR(&UL);
102 F77_TR = C2F_CHAR(&TR);
103 #endif
104
105 F77_ssyr2k(F77_UL, F77_TR, &F77_N, &F77_K, &alpha, A, &F77_lda, B, &F77_ldb, &beta, C, &F77_ldc);
106 } else cblas_xerbla(1, "cblas_ssyr2k",
107 "Illegal layout setting, %d\n", layout);
108 CBLAS_CallFromC = 0;
109 RowMajorStrg = 0;
110 return;
111 }
112