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//=====================================================
// Copyright (C) 2012 Andrea Arteaga <andyspiros@gmail.com>
//=====================================================
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program 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 General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
/* Check whether we are included by NumeriInterface.hpp or not */
#ifndef NI_INCLUDE_OK
# error CInterface.hpp should never be included directly: include NumericInterface.hpp instead!
#endif
#define CBLASFUNC(F) CAT(cblas_, CAT(NI_SCALARPREFIX, F))
#define LAPACKEFUNC(F) CAT(LAPACKE_, CAT(NI_SCALARPREFIX, F))
#ifndef NI_NAME
# define NI_NAME CAT(CAT(CInterface,$),NI_SCALAR)
#endif
template<>
class NumericInterface<NI_SCALAR>
{
public:
typedef NI_SCALAR Scalar;
public:
static std::string name()
{
std::string name = MAKE_STRING(NI_NAME);
return name;
}
/****************
* LEVEL 1 BLAS *
****************/
static void rot(const int& N, Scalar* x, Scalar* y,
const Scalar& cosine, const Scalar& sine)
{
CBLASFUNC(rot)(N, x, 1, y, 1, cosine, sine);
}
static void axpy(const int& N, const Scalar& alpha,
const Scalar* x, Scalar* y)
{
CBLASFUNC(axpy)(N, alpha, x, 1, y, 1);
}
static Scalar dot(const int& N, const Scalar* x, const Scalar* y)
{
return CBLASFUNC(dot)(N, x, 1, y, 1);
}
static Scalar norm(const int& N, const Scalar* x)
{
return CBLASFUNC(nrm2)(N, x, 1);
}
/****************
* LEVEL 2 BLAS *
****************/
static void MatrixVector(const bool& trans, const int& M, const int& N,
const Scalar& alpha, const Scalar* A, const Scalar* x,
const Scalar& beta, Scalar* y)
{
const int LDA = trans ? N : M;
const int tA = trans ? CblasTrans : CblasNoTrans;
CBLASFUNC(gemv)(CblasColMajor, tA, M, N, alpha, A, LDA,
x, 1, beta, y, 1);
}
static void SymMatrixVector(const char& uplo, const int& N,
const Scalar& alpha, const Scalar* A, const Scalar* x,
const Scalar& beta, Scalar* y)
{
int uplo_ = -1;
if (uplo == 'u' || uplo == 'U')
uplo_ = CblasUpper;
else if (uplo == 'l' || uplo == 'L')
uplo_ = CblasLower;
CBLASFUNC(symv)(CblasColMajor, uplo_, N, alpha, A, N, x, 1, beta, y, 1);
}
static void TriMatrixVector(const char& uplo, const int& N,
const Scalar* A, Scalar* x)
{
int uplo_ = -1;
if (uplo == 'u' || uplo == 'U')
uplo_ = CblasUpper;
else if (uplo == 'l' || uplo == 'L')
uplo_ = CblasLower;
CBLASFUNC(trmv)(CblasColMajor, uplo_, CblasNoTrans, CblasNonUnit, N,
A, N, x, 1);
}
static void TriSolveVector(const char& uplo,
const int& N, const Scalar* A, Scalar* x)
{
int uplo_ = -1;
if (uplo == 'u' || uplo == 'U')
uplo_ = CblasUpper;
else if (uplo == 'l' || uplo == 'L')
uplo_ = CblasLower;
CBLASFUNC(trsv)(CblasColMajor, uplo_, CblasNoTrans, CblasNonUnit, N,
A, N, x, 1);
}
static void Rank1Update(const int& M, const int& N, const Scalar& alpha,
const Scalar* x, const Scalar* y, Scalar* A)
{
CBLASFUNC(ger)(CblasColMajor, M, N, alpha, x, 1, y, 1, A, M);
}
static void Rank2Update(const char& uplo, const int& N, const Scalar& alpha,
const Scalar* x, const Scalar* y, Scalar* A)
{
int uplo_ = -1;
if (uplo == 'u' || uplo == 'U')
uplo_ = CblasUpper;
else if (uplo == 'l' || uplo == 'L')
uplo_ = CblasLower;
CBLASFUNC(syr2)(CblasColMajor, uplo_, N, alpha, x, 1, y, 1, A, N);
}
/****************
* LEVEL 3 BLAS *
****************/
static void MatrixMatrix(const bool& transA, const bool& transB,
const int& M, const int& N, const int& K,
const Scalar& alpha, const Scalar* A, const Scalar* B,
const Scalar& beta, Scalar* C)
{
int LDA = M, LDB = K;
int tA = CblasNoTrans, tB = CblasNoTrans;
if (transA) {
LDA = K;
tA = CblasTrans;
}
if (transB) {
LDB = N;
tB = CblasTrans;
}
CBLASFUNC(gemm)(CblasColMajor, tA, tB, M, N, K, alpha, A, LDA, B, LDB,
beta, C, M);
}
static void TriMatrixMatrix(const char& uplo,
const int& M, const int& N, const Scalar* A, Scalar* B)
{
int uplo_ = -1;
if (uplo == 'u' || uplo == 'U')
uplo_ = CblasUpper;
else if (uplo == 'l' || uplo == 'L')
uplo_ = CblasLower;
CBLASFUNC(trmm)(CblasColMajor, CblasLeft, uplo_, CblasNoTrans,
CblasNonUnit, M, N, 1., A, M, B, M);
}
static void TriSolveMatrix(const char& uplo,
const int& M, const int& N, const Scalar* A, Scalar *B)
{
int uplo_ = -1;
if (uplo == 'u' || uplo == 'U')
uplo_ = CblasUpper;
else if (uplo == 'l' || uplo == 'L')
uplo_ = CblasLower;
CBLASFUNC(trsm)(CblasColMajor, CblasLeft, uplo_, CblasNoTrans,
CblasNonUnit, M, N, 1., A, M, B, M);
}
/*******************
* LAPACKE SOLVERS *
*******************/
static void GeneralSolve(const int& N, Scalar *A, Scalar *b, int *ipiv)
{
LAPACKEFUNC(gesv)(CblasColMajor, N, 1, A, N, ipiv, b, N);
}
static void LeastSquaresSolve(const int& N, Scalar *A, Scalar *b)
{
LAPACKEFUNC(gels)(CblasColMajor, 'N', N, N, 1, A, N, b, N);
}
/**************************
* LAPACKE decompositions *
**************************/
static void LUdecomp(const int& N, Scalar* A, int* ipiv)
{
LAPACKEFUNC(getrf)(CblasColMajor, N, N, A, N, ipiv);
}
static void Choleskydecomp(const char& uplo, const int& N, Scalar* A)
{
LAPACKEFUNC(potrf)(CblasColMajor, uplo, N, A, N);
}
static void QRdecomp(const int& N, Scalar* A, int* jpiv, Scalar* tau)
{
LAPACKEFUNC(geqp3)(CblasColMajor, N, N, A, N, jpiv, tau);
}
};
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