260 lines
10 KiB
C++
260 lines
10 KiB
C++
// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
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// Copyright 2008-2016 National ICT Australia (NICTA)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// ------------------------------------------------------------------------
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#ifdef ARMA_USE_BLAS
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//! \namespace blas namespace for BLAS functions
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namespace blas
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{
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template<typename eT>
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inline
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void
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gemv(const char* transA, const blas_int* m, const blas_int* n, const eT* alpha, const eT* A, const blas_int* ldA, const eT* x, const blas_int* incx, const eT* beta, eT* y, const blas_int* incy)
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{
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arma_type_check((is_supported_blas_type<eT>::value == false));
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#if defined(ARMA_USE_FORTRAN_HIDDEN_ARGS)
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{
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if( is_float<eT>::value) { typedef float T; arma_fortran(arma_sgemv)(transA, m, n, (const T*)alpha, (const T*)A, ldA, (const T*)x, incx, (const T*)beta, (T*)y, incy, 1); }
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else if( is_double<eT>::value) { typedef double T; arma_fortran(arma_dgemv)(transA, m, n, (const T*)alpha, (const T*)A, ldA, (const T*)x, incx, (const T*)beta, (T*)y, incy, 1); }
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else if( is_cx_float<eT>::value) { typedef blas_cxf T; arma_fortran(arma_cgemv)(transA, m, n, (const T*)alpha, (const T*)A, ldA, (const T*)x, incx, (const T*)beta, (T*)y, incy, 1); }
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else if(is_cx_double<eT>::value) { typedef blas_cxd T; arma_fortran(arma_zgemv)(transA, m, n, (const T*)alpha, (const T*)A, ldA, (const T*)x, incx, (const T*)beta, (T*)y, incy, 1); }
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}
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#else
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{
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if( is_float<eT>::value) { typedef float T; arma_fortran(arma_sgemv)(transA, m, n, (const T*)alpha, (const T*)A, ldA, (const T*)x, incx, (const T*)beta, (T*)y, incy); }
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else if( is_double<eT>::value) { typedef double T; arma_fortran(arma_dgemv)(transA, m, n, (const T*)alpha, (const T*)A, ldA, (const T*)x, incx, (const T*)beta, (T*)y, incy); }
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else if( is_cx_float<eT>::value) { typedef blas_cxf T; arma_fortran(arma_cgemv)(transA, m, n, (const T*)alpha, (const T*)A, ldA, (const T*)x, incx, (const T*)beta, (T*)y, incy); }
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else if(is_cx_double<eT>::value) { typedef blas_cxd T; arma_fortran(arma_zgemv)(transA, m, n, (const T*)alpha, (const T*)A, ldA, (const T*)x, incx, (const T*)beta, (T*)y, incy); }
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}
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#endif
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}
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template<typename eT>
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inline
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void
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gemm(const char* transA, const char* transB, const blas_int* m, const blas_int* n, const blas_int* k, const eT* alpha, const eT* A, const blas_int* ldA, const eT* B, const blas_int* ldB, const eT* beta, eT* C, const blas_int* ldC)
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{
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arma_type_check((is_supported_blas_type<eT>::value == false));
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#if defined(ARMA_USE_FORTRAN_HIDDEN_ARGS)
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{
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if( is_float<eT>::value) { typedef float T; arma_fortran(arma_sgemm)(transA, transB, m, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)B, ldB, (const T*)beta, (T*)C, ldC, 1, 1); }
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else if( is_double<eT>::value) { typedef double T; arma_fortran(arma_dgemm)(transA, transB, m, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)B, ldB, (const T*)beta, (T*)C, ldC, 1, 1); }
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else if( is_cx_float<eT>::value) { typedef blas_cxf T; arma_fortran(arma_cgemm)(transA, transB, m, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)B, ldB, (const T*)beta, (T*)C, ldC, 1, 1); }
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else if(is_cx_double<eT>::value) { typedef blas_cxd T; arma_fortran(arma_zgemm)(transA, transB, m, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)B, ldB, (const T*)beta, (T*)C, ldC, 1, 1); }
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}
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#else
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{
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if( is_float<eT>::value) { typedef float T; arma_fortran(arma_sgemm)(transA, transB, m, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)B, ldB, (const T*)beta, (T*)C, ldC); }
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else if( is_double<eT>::value) { typedef double T; arma_fortran(arma_dgemm)(transA, transB, m, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)B, ldB, (const T*)beta, (T*)C, ldC); }
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else if( is_cx_float<eT>::value) { typedef blas_cxf T; arma_fortran(arma_cgemm)(transA, transB, m, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)B, ldB, (const T*)beta, (T*)C, ldC); }
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else if(is_cx_double<eT>::value) { typedef blas_cxd T; arma_fortran(arma_zgemm)(transA, transB, m, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)B, ldB, (const T*)beta, (T*)C, ldC); }
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}
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#endif
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}
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template<typename eT>
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inline
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void
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syrk(const char* uplo, const char* transA, const blas_int* n, const blas_int* k, const eT* alpha, const eT* A, const blas_int* ldA, const eT* beta, eT* C, const blas_int* ldC)
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{
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arma_type_check((is_supported_blas_type<eT>::value == false));
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#if defined(ARMA_USE_FORTRAN_HIDDEN_ARGS)
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{
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if( is_float<eT>::value) { typedef float T; arma_fortran(arma_ssyrk)(uplo, transA, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)beta, (T*)C, ldC, 1, 1); }
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else if(is_double<eT>::value) { typedef double T; arma_fortran(arma_dsyrk)(uplo, transA, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)beta, (T*)C, ldC, 1, 1); }
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}
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#else
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{
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if( is_float<eT>::value) { typedef float T; arma_fortran(arma_ssyrk)(uplo, transA, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)beta, (T*)C, ldC); }
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else if(is_double<eT>::value) { typedef double T; arma_fortran(arma_dsyrk)(uplo, transA, n, k, (const T*)alpha, (const T*)A, ldA, (const T*)beta, (T*)C, ldC); }
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}
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#endif
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}
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template<typename T>
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inline
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void
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herk(const char* uplo, const char* transA, const blas_int* n, const blas_int* k, const T* alpha, const std::complex<T>* A, const blas_int* ldA, const T* beta, std::complex<T>* C, const blas_int* ldC)
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{
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arma_type_check((is_supported_blas_type<T>::value == false));
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#if defined(ARMA_USE_FORTRAN_HIDDEN_ARGS)
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{
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if( is_float<T>::value) { typedef float TT; typedef blas_cxf cx_TT; arma_fortran(arma_cherk)(uplo, transA, n, k, (const TT*)alpha, (const cx_TT*)A, ldA, (const TT*)beta, (cx_TT*)C, ldC, 1, 1); }
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else if(is_double<T>::value) { typedef double TT; typedef blas_cxd cx_TT; arma_fortran(arma_zherk)(uplo, transA, n, k, (const TT*)alpha, (const cx_TT*)A, ldA, (const TT*)beta, (cx_TT*)C, ldC, 1, 1); }
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}
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#else
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{
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if( is_float<T>::value) { typedef float TT; typedef blas_cxf cx_TT; arma_fortran(arma_cherk)(uplo, transA, n, k, (const TT*)alpha, (const cx_TT*)A, ldA, (const TT*)beta, (cx_TT*)C, ldC); }
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else if(is_double<T>::value) { typedef double TT; typedef blas_cxd cx_TT; arma_fortran(arma_zherk)(uplo, transA, n, k, (const TT*)alpha, (const cx_TT*)A, ldA, (const TT*)beta, (cx_TT*)C, ldC); }
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}
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#endif
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}
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template<typename eT>
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inline
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eT
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dot(const uword n_elem, const eT* x, const eT* y)
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{
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arma_type_check((is_supported_blas_type<eT>::value == false));
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if(is_float<eT>::value)
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{
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#if defined(ARMA_BLAS_SDOT_BUG)
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{
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if(n_elem == 0) { return eT(0); }
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const char trans = 'T';
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const blas_int m = blas_int(n_elem);
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const blas_int n = 1;
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const blas_int inc = 1;
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const eT alpha = eT(1);
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const eT beta = eT(0);
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eT result[2]; // paranoia: using two elements instead of one
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blas::gemv(&trans, &m, &n, &alpha, x, &m, y, &inc, &beta, &result[0], &inc);
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return result[0];
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}
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#else
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{
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blas_int n = blas_int(n_elem);
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blas_int inc = 1;
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typedef float T;
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return eT( arma_fortran(arma_sdot)(&n, (const T*)x, &inc, (const T*)y, &inc) );
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}
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#endif
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}
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else
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if(is_double<eT>::value)
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{
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blas_int n = blas_int(n_elem);
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blas_int inc = 1;
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typedef double T;
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return eT( arma_fortran(arma_ddot)(&n, (const T*)x, &inc, (const T*)y, &inc) );
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}
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else
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if( (is_cx_float<eT>::value) || (is_cx_double<eT>::value) )
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{
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if(n_elem == 0) { return eT(0); }
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// using gemv() workaround due to compatibility issues with cdotu() and zdotu()
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const char trans = 'T';
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const blas_int m = blas_int(n_elem);
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const blas_int n = 1;
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const blas_int inc = 1;
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const eT alpha = eT(1);
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const eT beta = eT(0);
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eT result[2]; // paranoia: using two elements instead of one
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blas::gemv(&trans, &m, &n, &alpha, x, &m, y, &inc, &beta, &result[0], &inc);
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return result[0];
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}
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return eT(0);
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}
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template<typename eT>
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arma_inline
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eT
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asum(const uword n_elem, const eT* x)
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{
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arma_type_check((is_supported_blas_type<eT>::value == false));
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if(is_float<eT>::value)
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{
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blas_int n = blas_int(n_elem);
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blas_int inc = 1;
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typedef float T;
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return arma_fortran(arma_sasum)(&n, (const T*)x, &inc);
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}
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else
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if(is_double<eT>::value)
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{
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blas_int n = blas_int(n_elem);
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blas_int inc = 1;
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typedef double T;
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return arma_fortran(arma_dasum)(&n, (const T*)x, &inc);
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}
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return eT(0);
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}
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template<typename eT>
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arma_inline
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eT
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nrm2(const uword n_elem, const eT* x)
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{
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arma_type_check((is_supported_blas_type<eT>::value == false));
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if(is_float<eT>::value)
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{
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blas_int n = blas_int(n_elem);
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blas_int inc = 1;
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typedef float T;
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return arma_fortran(arma_snrm2)(&n, (const T*)x, &inc);
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}
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else
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if(is_double<eT>::value)
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{
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blas_int n = blas_int(n_elem);
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blas_int inc = 1;
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typedef double T;
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return arma_fortran(arma_dnrm2)(&n, (const T*)x, &inc);
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}
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return eT(0);
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}
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} // namespace blas
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#endif
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