LAPACK  3.9.0
LAPACK: Linear Algebra PACKage
cblas_sgemm.c
Go to the documentation of this file.
1 /*
2  *
3  * cblas_sgemm.c
4  * This program is a C interface to sgemm.
5  * Written by Keita Teranishi
6  * 4/8/1998
7  *
8  */
9 
10 #include "cblas.h"
11 #include "cblas_f77.h"
12 void cblas_sgemm(const CBLAS_LAYOUT layout, const CBLAS_TRANSPOSE TransA,
13  const CBLAS_TRANSPOSE TransB, const int M, const int N,
14  const int K, const float alpha, const float *A,
15  const int lda, const float *B, const int ldb,
16  const float beta, float *C, const int ldc)
17 {
18  char TA, TB;
19 #ifdef F77_CHAR
20  F77_CHAR F77_TA, F77_TB;
21 #else
22  #define F77_TA &TA
23  #define F77_TB &TB
24 #endif
25 
26 #ifdef F77_INT
27  F77_INT F77_M=M, F77_N=N, F77_K=K, F77_lda=lda, F77_ldb=ldb;
28  F77_INT F77_ldc=ldc;
29 #else
30  #define F77_M M
31  #define F77_N N
32  #define F77_K K
33  #define F77_lda lda
34  #define F77_ldb ldb
35  #define F77_ldc ldc
36 #endif
37 
38  extern int CBLAS_CallFromC;
39  extern int RowMajorStrg;
40  RowMajorStrg = 0;
41  CBLAS_CallFromC = 1;
42  if( layout == CblasColMajor )
43  {
44  if(TransA == CblasTrans) TA='T';
45  else if ( TransA == CblasConjTrans ) TA='C';
46  else if ( TransA == CblasNoTrans ) TA='N';
47  else
48  {
49  cblas_xerbla(2, "cblas_sgemm",
50  "Illegal TransA setting, %d\n", TransA);
51  CBLAS_CallFromC = 0;
52  RowMajorStrg = 0;
53  return;
54  }
55 
56  if(TransB == CblasTrans) TB='T';
57  else if ( TransB == CblasConjTrans ) TB='C';
58  else if ( TransB == CblasNoTrans ) TB='N';
59  else
60  {
61  cblas_xerbla(3, "cblas_sgemm",
62  "Illegal TransB setting, %d\n", TransB);
63  CBLAS_CallFromC = 0;
64  RowMajorStrg = 0;
65  return;
66  }
67 
68  #ifdef F77_CHAR
69  F77_TA = C2F_CHAR(&TA);
70  F77_TB = C2F_CHAR(&TB);
71  #endif
72 
73  F77_sgemm(F77_TA, F77_TB, &F77_M, &F77_N, &F77_K, &alpha, A, &F77_lda, B, &F77_ldb, &beta, C, &F77_ldc);
74  } else if (layout == CblasRowMajor)
75  {
76  RowMajorStrg = 1;
77  if(TransA == CblasTrans) TB='T';
78  else if ( TransA == CblasConjTrans ) TB='C';
79  else if ( TransA == CblasNoTrans ) TB='N';
80  else
81  {
82  cblas_xerbla(2, "cblas_sgemm",
83  "Illegal TransA setting, %d\n", TransA);
84  CBLAS_CallFromC = 0;
85  RowMajorStrg = 0;
86  return;
87  }
88  if(TransB == CblasTrans) TA='T';
89  else if ( TransB == CblasConjTrans ) TA='C';
90  else if ( TransB == CblasNoTrans ) TA='N';
91  else
92  {
93  cblas_xerbla(2, "cblas_sgemm",
94  "Illegal TransA setting, %d\n", TransA);
95  CBLAS_CallFromC = 0;
96  RowMajorStrg = 0;
97  return;
98  }
99  #ifdef F77_CHAR
100  F77_TA = C2F_CHAR(&TA);
101  F77_TB = C2F_CHAR(&TB);
102  #endif
103 
104  F77_sgemm(F77_TA, F77_TB, &F77_N, &F77_M, &F77_K, &alpha, B, &F77_ldb, A, &F77_lda, &beta, C, &F77_ldc);
105  } else
106  cblas_xerbla(1, "cblas_sgemm",
107  "Illegal layout setting, %d\n", layout);
108  CBLAS_CallFromC = 0;
109  RowMajorStrg = 0;
110 }
F77_sgemm
#define F77_sgemm
Definition: cblas_f77.h:167
cblas_f77.h
CBLAS_TRANSPOSE
CBLAS_TRANSPOSE
Definition: cblas.h:20
F77_TA
#define F77_TA
cblas_xerbla
void cblas_xerbla(int p, const char *rout, const char *form,...)
Definition: cblas_xerbla.c:8
F77_M
#define F77_M
CblasColMajor
Definition: cblas.h:19
F77_N
#define F77_N
F77_TB
#define F77_TB
F77_lda
#define F77_lda
CblasTrans
Definition: cblas.h:20
CBLAS_CallFromC
int CBLAS_CallFromC
Definition: cblas_globals.c:1
cblas.h
CBLAS_LAYOUT
CBLAS_LAYOUT
Definition: cblas.h:19
CblasRowMajor
Definition: cblas.h:19
RowMajorStrg
int RowMajorStrg
Definition: cblas_globals.c:2
F77_ldc
#define F77_ldc
F77_K
#define F77_K
CblasNoTrans
Definition: cblas.h:20
F77_ldb
#define F77_ldb
N
#define N
Definition: example_user.c:10
CblasConjTrans
Definition: cblas.h:20
cblas_sgemm
void cblas_sgemm(const CBLAS_LAYOUT layout, const CBLAS_TRANSPOSE TransA, const CBLAS_TRANSPOSE TransB, const int M, 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)
Definition: cblas_sgemm.c:12