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/**
* @file aka_blas_lapack.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Wed Mar 06 2013
* @date last modification: Tue Sep 29 2020
*
* @brief Interface of the Fortran BLAS/LAPACK libraries
*
*
* @section LICENSE
*
* Copyright (©) 2014-2021 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_error.hh"
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_AKA_BLAS_LAPACK_HH_
#define AKANTU_AKA_BLAS_LAPACK_HH_
/* -------------------------------------------------------------------------- */
#ifdef AKANTU_USE_BLAS
#include "aka_fortran_mangling.hh"
extern "C" {
/* ------------------------------------------------------------------------ */
/* Double precision */
/* ------------------------------------------------------------------------ */
// LEVEL 1
double AKA_FC_GLOBAL(ddot, DDOT)(int *, double *, int *, double *, int *);
void AKA_FC_GLOBAL(daxpy, DAXPY)(int *, double *, double *, int *, double *,
int *);
// LEVEL 2
void AKA_FC_GLOBAL(dgemv, DGEMV)(char *, int *, int *, double *, double *,
int *, double *, int *, double *, double *,
int *);
// LEVEL 3
void AKA_FC_GLOBAL(dgemm, DGEMM)(char *, char *, int *, int *, int *, double *,
double *, int *, double *, int *, double *,
double *, int *);
/* ------------------------------------------------------------------------ */
/* Simple precision */
/* ------------------------------------------------------------------------ */
// LEVEL 1
float AKA_FC_GLOBAL(sdot, SDOT)(int *, float *, int *, float *, int *);
void AKA_FC_GLOBAL(saxpy, SAXPY)(int *, float *, float *, int *, float *,
int *);
// LEVEL 2
void AKA_FC_GLOBAL(sgemv, SGEMV)(char *, int *, int *, float *, float *, int *,
float *, int *, float *, float *, int *);
// LEVEL 3
void AKA_FC_GLOBAL(sgemm, SGEMM)(char *, char *, int *, int *, int *, float *,
float *, int *, float *, int *, float *,
float *, int *);
}
#endif
namespace akantu {
#define AKANTU_WARNING_IGNORE_UNUSED_PARAMETER
#include "aka_warning.hh"
/// Wrapper around the S/DDOT BLAS function that returns the dot product of two
/// vectors
template <typename T>
inline T aka_dot(int * n, T * x, int * incx, T * y, int * incy) {
AKANTU_ERROR(debug::demangle(typeid(T).name())
<< "is not a type recognized, or you didn't activated "
"BLAS in the compilation options!");
}
/// Wrapper around the S/DAXPY BLAS function that computes \f$y := \alpha x +
/// y\f$
template <typename T>
inline void aka_axpy(int * n, T * alpha, T * x, int * incx, T * y, int * incy) {
AKANTU_ERROR(debug::demangle(typeid(T).name())
<< "is not a type recognized, or you didn't activated "
"BLAS in the compilation options!");
}
/// Wrapper around the S/DGEMV BLAS function that computes matrix-vector product
/// \f$y := \alpha A^{(T)}x + \beta y \f$
template <typename T>
inline void aka_gemv(char * trans, int * m, int * n, T * alpha, T * a,
int * lda, T * x, int * incx, T * beta, T * y,
int * incy) {
AKANTU_ERROR(debug::demangle(typeid(T).name())
<< "is not a type recognized, or you didn't activated "
"BLAS in the compilation options!");
}
/// Wrapper around the S/DGEMM BLAS function that computes the product of two
/// matrices \f$C := \alpha A^{(T)} B^{(T)} + \beta C \f$
template <typename T>
inline void aka_gemm(char * transa, char * transb, int * m, int * n, int * k,
T * alpha, T * a, int * lda, T * b, int * ldb, T * beta,
T * c, int * ldc) {
AKANTU_ERROR(debug::demangle(typeid(T).name())
<< "is not a type recognized, or you didn't activated "
"BLAS in the compilation options!");
}
#if defined(AKANTU_USE_BLAS)
template <>
inline double aka_dot<double>(int * n, double * x, int * incx, double * y,
int * incy) {
return AKA_FC_GLOBAL(ddot, DDOT)(n, x, incx, y, incy);
}
template <>
inline void aka_axpy(int * n, double * alpha, double * x, int * incx,
double * y, int * incy) {
return AKA_FC_GLOBAL(daxpy, DAXPY)(n, alpha, x, incx, y, incy);
}
template <>
inline void aka_gemv<double>(char * trans, int * m, int * n, double * alpha,
double * a, int * lda, double * x, int * incx,
double * beta, double * y, int * incy) {
return AKA_FC_GLOBAL(dgemv, DGEMV)(trans, m, n, alpha, a, lda, x, incx, beta,
y, incy);
}
template <>
inline void aka_gemm<double>(char * transa, char * transb, int * m, int * n,
int * k, double * alpha, double * a, int * lda,
double * b, int * ldb, double * beta, double * c,
int * ldc) {
AKA_FC_GLOBAL(dgemm, DGEMM)
(transa, transb, m, n, k, alpha, a, lda, b, ldb, beta, c, ldc);
}
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
template <>
inline float aka_dot<float>(int * n, float * x, int * incx, float * y,
int * incy) {
return AKA_FC_GLOBAL(sdot, SDOT)(n, x, incx, y, incy);
}
template <>
inline void aka_axpy(int * n, float * alpha, float * x, int * incx, float * y,
int * incy) {
return AKA_FC_GLOBAL(daxpy, DAXPY)(n, alpha, x, incx, y, incy);
}
template <>
inline void aka_gemv<float>(char * trans, int * m, int * n, float * alpha,
float * a, int * lda, float * x, int * incx,
float * beta, float * y, int * incy) {
AKA_FC_GLOBAL(sgemv, SGEMV)
(trans, m, n, alpha, a, lda, x, incx, beta, y, incy);
}
template <>
inline void aka_gemm<float>(char * transa, char * transb, int * m, int * n,
int * k, float * alpha, float * a, int * lda,
float * b, int * ldb, float * beta, float * c,
int * ldc) {
AKA_FC_GLOBAL(sgemm, SGEMM)
(transa, transb, m, n, k, alpha, a, lda, b, ldb, beta, c, ldc);
}
#endif
} // namespace akantu
#ifdef AKANTU_USE_LAPACK
#include "aka_fortran_mangling.hh"
extern "C" {
/* ------------------------------------------------------------------------ */
/* Double general matrix */
/* ------------------------------------------------------------------------ */
/// compute the eigenvalues/vectors
void AKA_FC_GLOBAL(dgeev, DGEEV)(char * jobvl, char * jobvr, int * n,
double * a, int * lda, double * wr,
double * wi, double * vl, int * ldvl,
double * vr, int * ldvr, double * work,
int * lwork, int * info);
/// LU decomposition of a general matrix
void AKA_FC_GLOBAL(dgetrf, DGETRF)(int * m, int * n, double * a, int * lda,
int * ipiv, int * info);
/// generate inverse of a matrix given its LU decomposition
void AKA_FC_GLOBAL(dgetri, DGETRI)(int * n, double * a, int * lda, int * ipiv,
double * work, int * lwork, int * info);
/// solving A x = b using a LU factorization
void AKA_FC_GLOBAL(dgetrs, DGETRS)(char * trans, int * n, int * nrhs,
double * A, int * lda, int * ipiv,
double * b, int * ldb, int * info);
/* ------------------------------------------------------------------------ */
/* Simple general matrix */
/* ------------------------------------------------------------------------ */
/// compute the eigenvalues/vectors
void AKA_FC_GLOBAL(sgeev, SGEEV)(char * jobvl, char * jobvr, int * n, float * a,
int * lda, float * wr, float * wi, float * vl,
int * ldvl, float * vr, int * ldvr,
float * work, int * lwork, int * info);
/// LU decomposition of a general matrix
void AKA_FC_GLOBAL(sgetrf, SGETRF)(int * m, int * n, float * a, int * lda,
int * ipiv, int * info);
/// generate inverse of a matrix given its LU decomposition
void AKA_FC_GLOBAL(sgetri, SGETRI)(int * n, float * a, int * lda, int * ipiv,
float * work, int * lwork, int * info);
/// solving A x = b using a LU factorization
void AKA_FC_GLOBAL(sgetrs, SGETRS)(char * trans, int * n, int * nrhs, float * A,
int * lda, int * ipiv, float * b, int * ldb,
int * info);
}
#endif // AKANTU_USE_LAPACK
namespace akantu {
/// Wrapper around the S/DGEEV BLAS function that computes the eigenvalues and
/// eigenvectors of a matrix
template <typename T>
inline void aka_geev(char * jobvl, char * jobvr, int * n, T * a, int * lda,
T * wr, T * wi, T * vl, int * ldvl, T * vr, int * ldvr,
T * work, int * lwork, int * info) {
AKANTU_ERROR(debug::demangle(typeid(T).name())
<< "is not a type recognized, or you didn't activated "
"LAPACK in the compilation options!");
}
/// Wrapper around the S/DGETRF BLAS function that computes the LU decomposition
/// of a matrix
template <typename T>
inline void aka_getrf(int * m, int * n, T * a, int * lda, int * ipiv,
int * info) {
AKANTU_ERROR(debug::demangle(typeid(T).name())
<< "is not a type recognized, or you didn't activated "
"LAPACK in the compilation options!");
}
/// Wrapper around the S/DGETRI BLAS function that computes the inverse of a
/// matrix given its LU decomposition
template <typename T>
inline void aka_getri(int * n, T * a, int * lda, int * ipiv, T * work,
int * lwork, int * info) {
AKANTU_ERROR(debug::demangle(typeid(T).name())
<< "is not a type recognized, or you didn't activated "
"LAPACK in the compilation options!");
}
/// Wrapper around the S/DGETRS BLAS function that solves \f$A^{(T)}x = b\f$
/// using LU decomposition
template <typename T>
inline void aka_getrs(char * trans, int * n, int * nrhs, T * A, int * lda,
int * ipiv, T * b, int * ldb, int * info) {
AKANTU_ERROR(debug::demangle(typeid(T).name())
<< "is not a type recognized, or you didn't activated "
"LAPACK in the compilation options!");
}
#include "aka_warning_restore.hh"
#ifdef AKANTU_USE_LAPACK
template <>
inline void aka_geev<double>(char * jobvl, char * jobvr, int * n, double * a,
int * lda, double * wr, double * wi, double * vl,
int * ldvl, double * vr, int * ldvr, double * work,
int * lwork, int * info) {
AKA_FC_GLOBAL(dgeev, DGEEV)
(jobvl, jobvr, n, a, lda, wr, wi, vl, ldvl, vr, ldvr, work, lwork, info);
}
template <>
inline void aka_getrf<double>(int * m, int * n, double * a, int * lda,
int * ipiv, int * info) {
AKA_FC_GLOBAL(dgetrf, DGETRF)(m, n, a, lda, ipiv, info);
}
template <>
inline void aka_getri<double>(int * n, double * a, int * lda, int * ipiv,
double * work, int * lwork, int * info) {
AKA_FC_GLOBAL(dgetri, DGETRI)(n, a, lda, ipiv, work, lwork, info);
}
template <>
inline void aka_getrs<double>(char * trans, int * n, int * nrhs, double * A,
int * lda, int * ipiv, double * b, int * ldb,
int * info) {
AKA_FC_GLOBAL(dgetrs, DGETRS)(trans, n, nrhs, A, lda, ipiv, b, ldb, info);
}
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
template <>
inline void aka_geev<float>(char * jobvl, char * jobvr, int * n, float * a,
int * lda, float * wr, float * wi, float * vl,
int * ldvl, float * vr, int * ldvr, float * work,
int * lwork, int * info) {
AKA_FC_GLOBAL(sgeev, SGEEV)
(jobvl, jobvr, n, a, lda, wr, wi, vl, ldvl, vr, ldvr, work, lwork, info);
}
template <>
inline void aka_getrf<float>(int * m, int * n, float * a, int * lda, int * ipiv,
int * info) {
AKA_FC_GLOBAL(sgetrf, SGETRF)(m, n, a, lda, ipiv, info);
}
template <>
inline void aka_getri<float>(int * n, float * a, int * lda, int * ipiv,
float * work, int * lwork, int * info) {
AKA_FC_GLOBAL(sgetri, SGETRI)(n, a, lda, ipiv, work, lwork, info);
}
template <>
inline void aka_getrs<float>(char * trans, int * n, int * nrhs, float * A,
int * lda, int * ipiv, float * b, int * ldb,
int * info) {
AKA_FC_GLOBAL(sgetrs, SGETRS)(trans, n, nrhs, A, lda, ipiv, b, ldb, info);
}
#endif
} // namespace akantu
#endif /* AKANTU_AKA_BLAS_LAPACK_HH_ */
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