GeneralMatrixMatrix_BLAS.h
Go to the documentation of this file.
1 /*
2  Copyright (c) 2011, Intel Corporation. All rights reserved.
3 
4  Redistribution and use in source and binary forms, with or without modification,
5  are permitted provided that the following conditions are met:
6 
7  * Redistributions of source code must retain the above copyright notice, this
8  list of conditions and the following disclaimer.
9  * Redistributions in binary form must reproduce the above copyright notice,
10  this list of conditions and the following disclaimer in the documentation
11  and/or other materials provided with the distribution.
12  * Neither the name of Intel Corporation nor the names of its contributors may
13  be used to endorse or promote products derived from this software without
14  specific prior written permission.
15 
16  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
20  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
23  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 
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,1> \
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 resIncr, Index resStride, \
62  EIGTYPE alpha, \
63  level3_blocking<EIGTYPE, EIGTYPE>& /*blocking*/, \
64  GemmParallelInfo<Index>* /*info = 0*/) \
65 { \
66  using std::conj; \
67 \
68  EIGEN_ONLY_USED_FOR_DEBUG(resIncr); \
69  eigen_assert(resIncr == 1); \
70  char transa, transb; \
71  BlasIndex m, n, k, lda, ldb, ldc; \
72  const EIGTYPE *a, *b; \
73  EIGTYPE beta(1); \
74  MatrixX##EIGPREFIX a_tmp, b_tmp; \
75 \
76 /* Set transpose options */ \
77  transa = (LhsStorageOrder==RowMajor) ? ((ConjugateLhs) ? 'C' : 'T') : 'N'; \
78  transb = (RhsStorageOrder==RowMajor) ? ((ConjugateRhs) ? 'C' : 'T') : 'N'; \
79 \
80 /* Set m, n, k */ \
81  m = convert_index<BlasIndex>(rows); \
82  n = convert_index<BlasIndex>(cols); \
83  k = convert_index<BlasIndex>(depth); \
84 \
85 /* Set lda, ldb, ldc */ \
86  lda = convert_index<BlasIndex>(lhsStride); \
87  ldb = convert_index<BlasIndex>(rhsStride); \
88  ldc = convert_index<BlasIndex>(resStride); \
89 \
90 /* Set a, b, c */ \
91  if ((LhsStorageOrder==ColMajor) && (ConjugateLhs)) { \
92  Map<const MatrixX##EIGPREFIX, 0, OuterStride<> > lhs(_lhs,m,k,OuterStride<>(lhsStride)); \
93  a_tmp = lhs.conjugate(); \
94  a = a_tmp.data(); \
95  lda = convert_index<BlasIndex>(a_tmp.outerStride()); \
96  } else a = _lhs; \
97 \
98  if ((RhsStorageOrder==ColMajor) && (ConjugateRhs)) { \
99  Map<const MatrixX##EIGPREFIX, 0, OuterStride<> > rhs(_rhs,k,n,OuterStride<>(rhsStride)); \
100  b_tmp = rhs.conjugate(); \
101  b = b_tmp.data(); \
102  ldb = convert_index<BlasIndex>(b_tmp.outerStride()); \
103  } else b = _rhs; \
104 \
105  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); \
106 }};
107 
108 #ifdef EIGEN_USE_MKL
109 GEMM_SPECIALIZATION(double, d, double, dgemm)
110 GEMM_SPECIALIZATION(float, f, float, sgemm)
111 GEMM_SPECIALIZATION(dcomplex, cd, MKL_Complex16, zgemm)
112 GEMM_SPECIALIZATION(scomplex, cf, MKL_Complex8, cgemm)
113 #else
114 GEMM_SPECIALIZATION(double, d, double, dgemm_)
115 GEMM_SPECIALIZATION(float, f, float, sgemm_)
116 GEMM_SPECIALIZATION(dcomplex, cd, double, zgemm_)
117 GEMM_SPECIALIZATION(scomplex, cf, float, cgemm_)
118 #endif
119 
120 } // end namespase internal
121 
122 } // end namespace Eigen
123 
124 #endif // EIGEN_GENERAL_MATRIX_MATRIX_BLAS_H
Eigen
Namespace containing all symbols from the Eigen library.
Definition: jet.h:637
d
static const double d[K][N]
Definition: igam.h:11
zgemm
int BLASFUNC() zgemm(char *, char *, int *, int *, int *, double *, double *, int *, double *, int *, double *, double *, int *)
cd
static double cd[7]
Definition: fresnl.c:92
dgemm
int BLASFUNC() dgemm(char *, char *, int *, int *, int *, double *, double *, int *, double *, int *, double *, double *, int *)
cgemm
int BLASFUNC() cgemm(char *, char *, int *, int *, int *, float *, float *, int *, float *, int *, float *, float *, int *)
Eigen::scomplex
std::complex< float > scomplex
Definition: MKL_support.h:126
Eigen::dcomplex
std::complex< double > dcomplex
Definition: MKL_support.h:125
tree::f
Point2(* f)(const Point3 &, OptionalJacobian< 2, 3 >)
Definition: testExpression.cpp:218
internal
Definition: BandTriangularSolver.h:13
sgemm
int BLASFUNC() sgemm(char *, char *, int *, int *, int *, float *, float *, int *, float *, int *, float *, float *, int *)
GEMM_SPECIALIZATION
#define GEMM_SPECIALIZATION(EIGTYPE, EIGPREFIX, BLASTYPE, BLASFUNC)
Definition: GeneralMatrixMatrix_BLAS.h:49


gtsam
Author(s):
autogenerated on Sun Dec 22 2024 04:11:35