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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.
#include "test.hh"
#include "lapack.hh"
#include "lapack/flops.hh"
#include "print_matrix.hh"
#include "error.hh"
#include "lapacke_wrappers.hh"
#include <vector>
// -----------------------------------------------------------------------------
template< typename scalar_t >
void test_larfb_work( Params& params, bool run )
{
using real_t = blas::real_type< scalar_t >;
// get & mark input values
lapack::Side side = params.side();
lapack::Op trans = params.trans();
lapack::Direction direction = params.direction();
lapack::StoreV storev = params.storev();
int64_t m = params.dim.m();
int64_t n = params.dim.n();
int64_t k = params.dim.k();
int64_t align = params.align();
// mark non-standard output values
params.ref_time();
//params.ref_gflops();
//params.gflops();
params.msg();
if (! run)
return;
// skip invalid sizes
if ((side == lapack::Side::Left && m < k) ||
(side == lapack::Side::Right && n < k))
{
params.msg() = "skipping: requires m >= k >= 0 (left) or n >= k >= 0 (right)";
return;
}
// skip invalid configuration
if ((blas::is_complex<scalar_t>::value) &&
(trans == lapack::Op::Trans))
{
params.msg() = "skipping: requires Op::NoTrans or Op::ConjTrans if complex";
return;
}
// ---------- setup
int64_t ldv;
if (storev == lapack::StoreV::Columnwise) {
if (side == lapack::Side::Left)
ldv = roundup( blas::max( 1, m ), align );
else
ldv = roundup( blas::max( 1, n ), align );
}
else {
// rowwise
ldv = roundup( k, align );
}
int64_t ldt = roundup( k, align );
int64_t ldc = roundup( blas::max( 1, m ), align );
size_t size_V;
if (storev == lapack::StoreV::Columnwise) {
size_V = (size_t) ldv * k;
}
else {
// rowwise
if (side == lapack::Side::Left)
size_V = (size_t) ldv * m;
else
size_V = (size_t) ldv * n;
}
size_t size_T = (size_t) ldt * k;
size_t size_C = (size_t) ldc * n;
std::vector< scalar_t > V( size_V );
std::vector< scalar_t > T( size_T );
std::vector< scalar_t > C_tst( size_C );
std::vector< scalar_t > C_ref( size_C );
int64_t idist = 1;
int64_t iseed[4] = { 0, 1, 2, 3 };
lapack::larnv( idist, iseed, V.size(), &V[0] );
lapack::larnv( idist, iseed, T.size(), &T[0] );
lapack::generate_matrix( params.matrix, m, n, &C_tst[0], ldc );
C_ref = C_tst;
// ---------- run test
testsweeper::flush_cache( params.cache() );
double time = testsweeper::get_wtime();
lapack::larfb( side, trans, direction, storev, m, n, k, &V[0], ldv, &T[0], ldt, &C_tst[0], ldc );
time = testsweeper::get_wtime() - time;
params.time() = time;
//double gflop = lapack::Gflop< scalar_t >::larfb( side, trans, direction, storev, m, n, k );
//params.gflops() = gflop / time;
if (params.ref() == 'y' || params.check() == 'y') {
// ---------- run reference
testsweeper::flush_cache( params.cache() );
time = testsweeper::get_wtime();
int64_t info_ref = LAPACKE_larfb( to_char( side ), to_char( trans ), to_char( direction ), to_char( storev ), m, n, k, &V[0], ldv, &T[0], ldt, &C_ref[0], ldc );
time = testsweeper::get_wtime() - time;
if (info_ref != 0) {
fprintf( stderr, "LAPACKE_larfb returned error %lld\n", llong( info_ref ) );
}
params.ref_time() = time;
//params.ref_gflops() = gflop / time;
real_t tol = std::numeric_limits< real_t >::epsilon();
// ---------- check error compared to reference
real_t error = 0;
error += rel_error( C_tst, C_ref );
params.error() = error;
params.okay() = (error <= tol); // expect lapackpp == lapacke
}
}
// -----------------------------------------------------------------------------
void test_larfb( Params& params, bool run )
{
switch (params.datatype()) {
case testsweeper::DataType::Single:
test_larfb_work< float >( params, run );
break;
case testsweeper::DataType::Double:
test_larfb_work< double >( params, run );
break;
case testsweeper::DataType::SingleComplex:
test_larfb_work< std::complex<float> >( params, run );
break;
case testsweeper::DataType::DoubleComplex:
test_larfb_work< std::complex<double> >( params, run );
break;
default:
throw std::runtime_error( "unknown datatype" );
break;
}
}
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