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// Copyright (c) 2017-2023, University of Tennessee. All rights reserved.
// SPDX-License-Identifier: BSD-3-Clause
// This program is free software: you can redistribute it and/or modify it under
// the terms of the BSD 3-Clause license. See the accompanying LICENSE file.
#ifndef CBLAS_HH
#define CBLAS_HH
#include "blas/defines.h"
#if defined(BLAS_HAVE_MKL)
#if defined(BLAS_ILP64) && ! defined(MKL_ILP64)
#define MKL_ILP64
#endif
#include <mkl_cblas.h>
#elif defined(BLAS_HAVE_ESSL)
#if defined(BLAS_ILP64) && ! defined(_ESV6464)
#define _ESV6464
#endif
#include <essl.h>
#elif defined(BLAS_HAVE_ACCELERATE)
// On macOS, the official way to include cblas is via Accelerate.h.
// Unfortunately with Xcode 10.3 and GNU g++ 9.3, that doesn't compile.
// If we can find cblas.h, use it, otherwise use Accelerate.h.
#ifdef BLAS_HAVE_ACCELERATE_CBLAS_H
#include <cblas.h>
#else
#include <Accelerate/Accelerate.h>
#endif
typedef CBLAS_ORDER CBLAS_LAYOUT;
#else
// Some ancient cblas.h don't include extern C. It's okay to nest.
extern "C" {
#include <cblas.h>
}
// Original cblas.h used CBLAS_ORDER; new uses CBLAS_LAYOUT and makes
// CBLAS_ORDER a typedef. Make sure CBLAS_LAYOUT is defined.
typedef CBLAS_ORDER CBLAS_LAYOUT;
#endif
#include "blas/util.hh"
#include <complex>
// =============================================================================
// constants
// -----------------------------------------------------------------------------
inline CBLAS_LAYOUT cblas_layout_const( blas::Layout layout )
{
switch (layout) {
case blas::Layout::RowMajor: return CblasRowMajor;
case blas::Layout::ColMajor: return CblasColMajor;
default: throw blas::Error();
}
}
inline CBLAS_LAYOUT cblas_layout_const( char layout )
{
switch (layout) {
case 'r': case 'R': return CblasRowMajor;
case 'c': case 'C': return CblasColMajor;
default: throw blas::Error();
}
}
inline char lapack_layout_const( CBLAS_LAYOUT layout )
{
switch (layout) {
case CblasRowMajor: return 'r';
case CblasColMajor: return 'c';
default: throw blas::Error();
}
}
// -----------------------------------------------------------------------------
inline CBLAS_DIAG cblas_diag_const( blas::Diag diag )
{
switch (diag) {
case blas::Diag::NonUnit: return CblasNonUnit;
case blas::Diag::Unit: return CblasUnit;
default: throw blas::Error();
}
}
inline CBLAS_DIAG cblas_diag_const( char diag )
{
switch (diag) {
case 'n': case 'N': return CblasNonUnit;
case 'u': case 'U': return CblasUnit;
default: throw blas::Error();
}
}
inline char lapack_diag_const( CBLAS_DIAG diag )
{
switch (diag) {
case CblasNonUnit: return 'n';
case CblasUnit: return 'u';
default: throw blas::Error();
}
}
// -----------------------------------------------------------------------------
inline CBLAS_SIDE cblas_side_const( blas::Side side )
{
switch (side) {
case blas::Side::Left: return CblasLeft;
case blas::Side::Right: return CblasRight;
default: throw blas::Error();
}
}
inline CBLAS_SIDE cblas_side_const( char side )
{
switch (side) {
case 'l': case 'L': return CblasLeft;
case 'r': case 'R': return CblasRight;
default: throw blas::Error();
}
}
inline char lapack_side_const( CBLAS_SIDE side )
{
switch (side) {
case CblasLeft: return 'l';
case CblasRight: return 'r';
default: throw blas::Error();
}
}
// -----------------------------------------------------------------------------
inline CBLAS_TRANSPOSE cblas_trans_const( blas::Op trans )
{
switch (trans) {
case blas::Op::NoTrans: return CblasNoTrans;
case blas::Op::Trans: return CblasTrans;
case blas::Op::ConjTrans: return CblasConjTrans;
default: throw blas::Error();
}
}
inline CBLAS_TRANSPOSE cblas_trans_const( char trans )
{
switch (trans) {
case 'n': case 'N': return CblasNoTrans;
case 't': case 'T': return CblasTrans;
case 'c': case 'C': return CblasConjTrans;
default: throw blas::Error();
}
}
inline char lapack_trans_const( CBLAS_TRANSPOSE trans )
{
switch (trans) {
case CblasNoTrans: return 'n';
case CblasTrans: return 't';
case CblasConjTrans: return 'c';
default: throw blas::Error();
}
}
// -----------------------------------------------------------------------------
inline CBLAS_UPLO cblas_uplo_const( blas::Uplo uplo )
{
switch (uplo) {
case blas::Uplo::Lower: return CblasLower;
case blas::Uplo::Upper: return CblasUpper;
default: throw blas::Error();
}
}
inline CBLAS_UPLO cblas_uplo_const( char uplo )
{
switch (uplo) {
case 'l': case 'L': return CblasLower;
case 'u': case 'U': return CblasUpper;
default: throw blas::Error();
}
}
inline char lapack_uplo_const( CBLAS_UPLO uplo )
{
switch (uplo) {
case CblasLower: return 'l';
case CblasUpper: return 'u';
default: throw blas::Error();
}
}
// =============================================================================
// Level 2 BLAS
// -----------------------------------------------------------------------------
inline void
cblas_symv(
CBLAS_LAYOUT layout, CBLAS_UPLO uplo, int n,
float alpha,
float const *A, int lda,
float const *x, int incx,
float beta,
float* y, int incy )
{
cblas_ssymv( layout, uplo, n,
alpha, A, lda, x, incx, beta, y, incy );
}
inline void
cblas_symv(
CBLAS_LAYOUT layout, CBLAS_UPLO uplo, int n,
double alpha,
double const *A, int lda,
double const *x, int incx,
double beta,
double* y, int incy )
{
cblas_dsymv( layout, uplo, n,
alpha, A, lda, x, incx, beta, y, incy );
}
// LAPACK provides [cz]symv, CBLAS lacks them
void
cblas_symv(
CBLAS_LAYOUT layout,
CBLAS_UPLO uplo,
int n,
std::complex<float> alpha,
std::complex<float> const* A, int lda,
std::complex<float> const* x, int incx,
std::complex<float> beta,
std::complex<float>* yref, int incy );
void
cblas_symv(
CBLAS_LAYOUT layout,
CBLAS_UPLO uplo,
int n,
std::complex<double> alpha,
std::complex<double> const* A, int lda,
std::complex<double> const* x, int incx,
std::complex<double> beta,
std::complex<double>* yref, int incy );
// -----------------------------------------------------------------------------
inline void
cblas_syr(
CBLAS_LAYOUT layout, CBLAS_UPLO uplo, int n,
float alpha,
float const *x, int incx,
float* A, int lda )
{
cblas_ssyr( layout, uplo, n, alpha, x, incx, A, lda );
}
inline void
cblas_syr(
CBLAS_LAYOUT layout, CBLAS_UPLO uplo, int n,
double alpha,
double const *x, int incx,
double* A, int lda )
{
cblas_dsyr( layout, uplo, n, alpha, x, incx, A, lda );
}
// LAPACK provides [cz]syr, CBLAS lacks them
void
cblas_syr(
CBLAS_LAYOUT layout, CBLAS_UPLO uplo, int n,
std::complex<float> alpha,
std::complex<float> const *x, int incx,
std::complex<float>* A, int lda );
void
cblas_syr(
CBLAS_LAYOUT layout, CBLAS_UPLO uplo, int n,
std::complex<double> alpha,
std::complex<double> const *x, int incx,
std::complex<double>* A, int lda );
// -----------------------------------------------------------------------------
inline void
cblas_gbmv(
CBLAS_LAYOUT layout, CBLAS_TRANSPOSE trans,
int m, int n, int kl, int ku,
float alpha,
float const *A, int lda,
float const *x, int incx,
float beta,
float *y, int incy )
{
cblas_sgbmv( layout, trans, m, n, kl, ku, alpha, A, lda,
x, incx, beta, y, incy );
}
inline void
cblas_gbmv(
CBLAS_LAYOUT layout, CBLAS_TRANSPOSE trans,
int m, int n, int kl, int ku,
double alpha,
double const *A, int lda,
double const *x, int incx,
double beta,
double *y, int incy )
{
cblas_dgbmv( layout, trans, m, n, kl, ku, alpha, A, lda,
x, incx, beta, y, incy );
}
inline void
cblas_gbmv(
CBLAS_LAYOUT layout, CBLAS_TRANSPOSE trans,
int m, int n, int kl, int ku,
std::complex<float> alpha,
std::complex<float> const *A, int lda,
std::complex<float> const *x, int incx,
std::complex<float> beta,
std::complex<float> *y, int incy )
{
cblas_cgbmv( layout, trans, m, n, kl, ku, &alpha, A, lda,
x, incx, &beta, y, incy );
}
inline void
cblas_gbmv(
CBLAS_LAYOUT layout, CBLAS_TRANSPOSE trans,
int m, int n, int kl, int ku,
std::complex<double> alpha,
std::complex<double> const *A, int lda,
std::complex<double> const *x, int incx,
std::complex<double> beta,
std::complex<double> *y, int incy )
{
cblas_zgbmv( layout, trans, m, n, kl, ku, &alpha, A, lda,
x, incx, &beta, y, incy );
}
// -----------------------------------------------------------------------------
inline void
cblas_hbmv(
CBLAS_LAYOUT layout, CBLAS_UPLO uplo,
int n, int kd,
float alpha,
float const *A, int lda,
float const *x, int incx,
float beta,
float *y, int incy )
{
cblas_ssbmv( layout, uplo, n, kd, alpha, A, lda,
x, incx, beta, y, incy );
}
inline void
cblas_hbmv(
CBLAS_LAYOUT layout, CBLAS_UPLO uplo,
int n, int kd,
double alpha,
double const *A, int lda,
double const *x, int incx,
double beta,
double *y, int incy )
{
cblas_dsbmv( layout, uplo, n, kd, alpha, A, lda,
x, incx, beta, y, incy );
}
inline void
cblas_hbmv(
CBLAS_LAYOUT layout, CBLAS_UPLO uplo,
int n, int kd,
std::complex<float> alpha,
std::complex<float> const *A, int lda,
std::complex<float> const *x, int incx,
std::complex<float> beta,
std::complex<float> *y, int incy )
{
cblas_chbmv( layout, uplo, n, kd, &alpha, A, lda,
x, incx, &beta, y, incy );
}
inline void
cblas_hbmv(
CBLAS_LAYOUT layout, CBLAS_UPLO uplo,
int n, int kd,
std::complex<double> alpha,
std::complex<double> const *A, int lda,
std::complex<double> const *x, int incx,
std::complex<double> beta,
std::complex<double> *y, int incy )
{
cblas_zhbmv( layout, uplo, n, kd, &alpha, A, lda,
x, incx, &beta, y, incy );
}
#endif // #ifndef CBLAS_HH
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