1/*
2 *
3 * cblas_dsyr2k.c
4 * This program is a C interface to dsyr2k.
5 * Written by Keita Teranishi
6 * 4/6/1998
7 *
8 */
9
10#include "cblas.h"
11#include "cblas_f77.h"
12void cblas_dsyr2k(const enum CBLAS_ORDER Order, const enum CBLAS_UPLO Uplo,
13                  const enum CBLAS_TRANSPOSE Trans, const int N, const int K,
14                  const double alpha, const double  *A, const int lda,
15                  const double  *B, const int ldb, const double beta,
16                  double  *C, const int 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( Order == CblasColMajor )
43   {
44
45      if( Uplo == CblasUpper) UL='U';
46      else if ( Uplo == CblasLower ) UL='L';
47      else
48      {
49         cblas_xerbla(2, "cblas_dsyr2k","Illegal Uplo setting, %d\n", Uplo);
50         CBLAS_CallFromC = 0;
51         RowMajorStrg = 0;
52         return;
53      }
54
55      if( Trans == CblasTrans) TR ='T';
56      else if ( Trans == CblasConjTrans ) TR='C';
57      else if ( Trans == CblasNoTrans )   TR='N';
58      else
59      {
60         cblas_xerbla(3, "cblas_dsyr2k","Illegal Trans setting, %d\n", Trans);
61         CBLAS_CallFromC = 0;
62         RowMajorStrg = 0;
63         return;
64      }
65
66
67      #ifdef F77_CHAR
68         F77_UL = C2F_CHAR(&UL);
69         F77_TR = C2F_CHAR(&TR);
70      #endif
71
72      F77_dsyr2k(F77_UL, F77_TR, &F77_N, &F77_K, &alpha, A, &F77_lda,
73                      B, &F77_ldb, &beta, C, &F77_ldc);
74   } else if (Order == CblasRowMajor)
75   {
76      RowMajorStrg = 1;
77      if( Uplo == CblasUpper) UL='L';
78      else if ( Uplo == CblasLower ) UL='U';
79      else
80      {
81         cblas_xerbla(3, "cblas_dsyr2k","Illegal Uplo setting, %d\n", Uplo);
82         CBLAS_CallFromC = 0;
83         RowMajorStrg = 0;
84         return;
85      }
86      if( Trans == CblasTrans) TR ='N';
87      else if ( Trans == CblasConjTrans ) TR='N';
88      else if ( Trans == CblasNoTrans )   TR='T';
89      else
90      {
91         cblas_xerbla(3, "cblas_dsyr2k","Illegal Trans setting, %d\n", Trans);
92         CBLAS_CallFromC = 0;
93         RowMajorStrg = 0;
94         return;
95      }
96
97      #ifdef F77_CHAR
98         F77_UL = C2F_CHAR(&UL);
99         F77_TR = C2F_CHAR(&TR);
100      #endif
101
102      F77_dsyr2k(F77_UL, F77_TR, &F77_N, &F77_K, &alpha, A, &F77_lda, B,
103                &F77_ldb, &beta, C, &F77_ldc);
104   }
105   else cblas_xerbla(1, "cblas_dsyr2k","Illegal Order setting, %d\n", Order);
106   CBLAS_CallFromC = 0;
107   RowMajorStrg = 0;
108   return;
109}
110