1/*
2 *
3 * cblas_cher2k.c
4 * This program is a C interface to cher2k.
5 * Written by Keita Teranishi
6 * 4/8/1998
7 *
8 */
9
10#include "cblas.h"
11#include "cblas_f77.h"
12void cblas_cher2k(const enum CBLAS_ORDER Order, const enum CBLAS_UPLO Uplo,
13                  const enum CBLAS_TRANSPOSE Trans, const int N, const int K,
14                  const void *alpha, const void *A, const int lda,
15                  const void *B, const int ldb, const float beta,
16                  void *C, const int ldc)
17{
18   char UL, TR;
19#ifdef F77_CHAR
20   F77_CHAR F77_TR, 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   float ALPHA[2];
40   const float *alp=(float *)alpha;
41
42   CBLAS_CallFromC = 1;
43   RowMajorStrg = 0;
44
45   if( Order == CblasColMajor )
46   {
47
48      if( Uplo == CblasUpper) UL='U';
49      else if ( Uplo == CblasLower ) UL='L';
50      else
51      {
52         cblas_xerbla(2, "cblas_cher2k", "Illegal Uplo setting, %d\n", Uplo);
53         CBLAS_CallFromC = 0;
54         RowMajorStrg = 0;
55         return;
56      }
57
58      if( Trans == CblasTrans) TR ='T';
59      else if ( Trans == CblasConjTrans ) TR='C';
60      else if ( Trans == CblasNoTrans )   TR='N';
61      else
62      {
63         cblas_xerbla(3, "cblas_cher2k", "Illegal Trans setting, %d\n", Trans);
64         CBLAS_CallFromC = 0;
65         RowMajorStrg = 0;
66         return;
67      }
68
69      #ifdef F77_CHAR
70         F77_UL = C2F_CHAR(&UL);
71         F77_TR = C2F_CHAR(&TR);
72      #endif
73
74      F77_cher2k(F77_UL, F77_TR, &F77_N, &F77_K, alpha, A, &F77_lda, B, &F77_ldb, &beta, C, &F77_ldc);
75   } else if (Order == CblasRowMajor)
76   {
77      RowMajorStrg = 1;
78
79      if( Uplo == CblasUpper) UL='L';
80      else if ( Uplo == CblasLower ) UL='U';
81      else
82      {
83         cblas_xerbla(2, "cblas_cher2k", "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='C';
91      else
92      {
93         cblas_xerbla(3, "cblas_cher2k", "Illegal Trans setting, %d\n", Trans);
94         CBLAS_CallFromC = 0;
95         RowMajorStrg = 0;
96         return;
97      }
98      #ifdef F77_CHAR
99         F77_UL = C2F_CHAR(&UL);
100         F77_TR = C2F_CHAR(&TR);
101      #endif
102
103      ALPHA[0]= *alp;
104      ALPHA[1]= -alp[1];
105      F77_cher2k(F77_UL,F77_TR, &F77_N, &F77_K, ALPHA, A, &F77_lda, B, &F77_ldb, &beta, C, &F77_ldc);
106   }
107   else  cblas_xerbla(1, "cblas_cher2k", "Illegal Order setting, %d\n", Order);
108   CBLAS_CallFromC = 0;
109   RowMajorStrg = 0;
110   return;
111}
112