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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 enum CBLAS_ORDER Order,const enum CBLAS_UPLO Uplo,const enum CBLAS_TRANSPOSE Trans,const int N,const int K,const float alpha,const float * A,const int lda,const float * B,const int ldb,const float beta,float * C,const int ldc)12 void cblas_ssyr2k(const enum CBLAS_ORDER Order, const enum CBLAS_UPLO Uplo,
13                   const enum CBLAS_TRANSPOSE Trans, const int N, const int K,
14                   const float alpha, const float  *A, const int lda,
15                   const float  *B, const int ldb, const float beta,
16                   float  *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_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 (Order == 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 Order setting, %d\n", Order);
108    CBLAS_CallFromC = 0;
109    RowMajorStrg = 0;
110    return;
111 }
112