GeneralMatrixMatrix_BLAS.h
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27  ********************************************************************************
28  * Content : Eigen bindings to BLAS F77
29  * General matrix-matrix product functionality based on ?GEMM.
30  ********************************************************************************
31 */
32 
33 #ifndef EIGEN_GENERAL_MATRIX_MATRIX_BLAS_H
34 #define EIGEN_GENERAL_MATRIX_MATRIX_BLAS_H
35 
36 namespace Eigen {
37 
38 namespace internal {
39 
40 /**********************************************************************
41 * This file implements general matrix-matrix multiplication using BLAS
42 * gemm function via partial specialization of
43 * general_matrix_matrix_product::run(..) method for float, double,
44 * std::complex<float> and std::complex<double> types
45 **********************************************************************/
46 
47 // gemm specialization
48 
49 #define GEMM_SPECIALIZATION(EIGTYPE, EIGPREFIX, BLASTYPE, BLASFUNC) \
50 template< \
51  typename Index, \
52  int LhsStorageOrder, bool ConjugateLhs, \
53  int RhsStorageOrder, bool ConjugateRhs> \
54 struct general_matrix_matrix_product<Index,EIGTYPE,LhsStorageOrder,ConjugateLhs,EIGTYPE,RhsStorageOrder,ConjugateRhs,ColMajor> \
55 { \
56 typedef gebp_traits<EIGTYPE,EIGTYPE> Traits; \
57 \
58 static void run(Index rows, Index cols, Index depth, \
59  const EIGTYPE* _lhs, Index lhsStride, \
60  const EIGTYPE* _rhs, Index rhsStride, \
61  EIGTYPE* res, Index resStride, \
62  EIGTYPE alpha, \
63  level3_blocking<EIGTYPE, EIGTYPE>& /*blocking*/, \
64  GemmParallelInfo<Index>* /*info = 0*/) \
65 { \
66  using std::conj; \
67 \
68  char transa, transb; \
69  BlasIndex m, n, k, lda, ldb, ldc; \
70  const EIGTYPE *a, *b; \
71  EIGTYPE beta(1); \
72  MatrixX##EIGPREFIX a_tmp, b_tmp; \
73 \
74 /* Set transpose options */ \
75  transa = (LhsStorageOrder==RowMajor) ? ((ConjugateLhs) ? 'C' : 'T') : 'N'; \
76  transb = (RhsStorageOrder==RowMajor) ? ((ConjugateRhs) ? 'C' : 'T') : 'N'; \
77 \
78 /* Set m, n, k */ \
79  m = convert_index<BlasIndex>(rows); \
80  n = convert_index<BlasIndex>(cols); \
81  k = convert_index<BlasIndex>(depth); \
82 \
83 /* Set lda, ldb, ldc */ \
84  lda = convert_index<BlasIndex>(lhsStride); \
85  ldb = convert_index<BlasIndex>(rhsStride); \
86  ldc = convert_index<BlasIndex>(resStride); \
87 \
88 /* Set a, b, c */ \
89  if ((LhsStorageOrder==ColMajor) && (ConjugateLhs)) { \
90  Map<const MatrixX##EIGPREFIX, 0, OuterStride<> > lhs(_lhs,m,k,OuterStride<>(lhsStride)); \
91  a_tmp = lhs.conjugate(); \
92  a = a_tmp.data(); \
93  lda = convert_index<BlasIndex>(a_tmp.outerStride()); \
94  } else a = _lhs; \
95 \
96  if ((RhsStorageOrder==ColMajor) && (ConjugateRhs)) { \
97  Map<const MatrixX##EIGPREFIX, 0, OuterStride<> > rhs(_rhs,k,n,OuterStride<>(rhsStride)); \
98  b_tmp = rhs.conjugate(); \
99  b = b_tmp.data(); \
100  ldb = convert_index<BlasIndex>(b_tmp.outerStride()); \
101  } else b = _rhs; \
102 \
103  BLASFUNC(&transa, &transb, &m, &n, &k, (const BLASTYPE*)&numext::real_ref(alpha), (const BLASTYPE*)a, &lda, (const BLASTYPE*)b, &ldb, (const BLASTYPE*)&numext::real_ref(beta), (BLASTYPE*)res, &ldc); \
104 }};
105 
106 #ifdef EIGEN_USE_MKL
107 GEMM_SPECIALIZATION(double, d, double, dgemm)
108 GEMM_SPECIALIZATION(float, f, float, sgemm)
109 GEMM_SPECIALIZATION(dcomplex, cd, MKL_Complex16, zgemm)
110 GEMM_SPECIALIZATION(scomplex, cf, MKL_Complex8, cgemm)
111 #else
112 GEMM_SPECIALIZATION(double, d, double, dgemm_)
113 GEMM_SPECIALIZATION(float, f, float, sgemm_)
114 GEMM_SPECIALIZATION(dcomplex, cd, double, zgemm_)
115 GEMM_SPECIALIZATION(scomplex, cf, float, cgemm_)
116 #endif
117 
118 } // end namespase internal
119 
120 } // end namespace Eigen
121 
122 #endif // EIGEN_GENERAL_MATRIX_MATRIX_BLAS_H
int BLASFUNC() dgemm(char *, char *, int *, int *, int *, double *, double *, int *, double *, int *, double *, double *, int *)
int BLASFUNC() cgemm(char *, char *, int *, int *, int *, float *, float *, int *, float *, int *, float *, float *, int *)
Namespace containing all symbols from the Eigen library.
Definition: jet.h:637
std::complex< float > scomplex
Definition: MKL_support.h:119
std::complex< double > dcomplex
Definition: MKL_support.h:118
Point2(* f)(const Point3 &, OptionalJacobian< 2, 3 >)
int BLASFUNC() zgemm(char *, char *, int *, int *, int *, double *, double *, int *, double *, int *, double *, double *, int *)
#define GEMM_SPECIALIZATION(EIGTYPE, EIGPREFIX, BLASTYPE, BLASFUNC)
int BLASFUNC() sgemm(char *, char *, int *, int *, int *, float *, float *, int *, float *, int *, float *, float *, int *)


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autogenerated on Sat May 8 2021 02:42:06