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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 "check_gels.hh"
#include <vector>
// -----------------------------------------------------------------------------
template< typename scalar_t >
void test_gelsy_work( Params& params, bool run )
{
using real_t = blas::real_type< scalar_t >;
// get & mark input values
int64_t m = params.dim.m();
int64_t n = params.dim.n();
int64_t nrhs = params.nrhs();
int64_t align = params.align();
params.matrix.mark();
real_t eps = std::numeric_limits< real_t >::epsilon();
real_t tol = params.tol() * eps;
// mark non-standard output values
params.ref_time();
// params.ref_gflops();
// params.gflops();
params.error2();
if (! run)
return;
// ---------- setup
int64_t lda = roundup( blas::max( 1, m ), align );
int64_t ldb = roundup( blas::max( 1, m, n ), align );
real_t rcond = std::numeric_limits< real_t >::epsilon();
int64_t rank_tst;
lapack_int rank_ref;
size_t size_A = (size_t) lda * n;
size_t size_B = (size_t) ldb * nrhs;
size_t size_jpvt = (size_t) (n);
std::vector< scalar_t > A_tst( size_A );
std::vector< scalar_t > A_ref( size_A );
std::vector< scalar_t > B_tst( size_B );
std::vector< scalar_t > B_ref( size_B );
std::vector< int64_t > jpvt_tst( size_jpvt );
std::vector< lapack_int > jpvt_ref( size_jpvt );
lapack::generate_matrix( params.matrix, m, n, &A_tst[0], lda );
int64_t idist = 1;
int64_t iseed[4] = { 0, 1, 2, 3 };
lapack::larnv( idist, iseed, B_tst.size(), &B_tst[0] );
A_ref = A_tst;
B_ref = B_tst;
// Initialize jpvt to 0 so all columns are free.
std::fill( jpvt_tst.begin(), jpvt_tst.end(), 0 );
std::fill( jpvt_ref.begin(), jpvt_ref.end(), 0 );
// ---------- run test
testsweeper::flush_cache( params.cache() );
double time = testsweeper::get_wtime();
int64_t info_tst = lapack::gelsy( m, n, nrhs, &A_tst[0], lda, &B_tst[0], ldb, &jpvt_tst[0], rcond, &rank_tst );
time = testsweeper::get_wtime() - time;
if (info_tst != 0) {
fprintf( stderr, "lapack::gelsy returned error %lld\n", llong( info_tst ) );
}
params.time() = time;
// double gflop = lapack::Gflop< scalar_t >::gelsy( m, n, nrhs );
// params.gflops() = gflop / time;
if (params.check() == 'y') {
// ---------- check error
real_t error[2];
check_gels( false, blas::Op::NoTrans, m, n, nrhs,
&A_ref[0], lda, // original A
&B_tst[0], ldb, // X
&B_ref[0], ldb, // original B
error );
params.error() = error[0];
params.error2() = error[1];
params.okay() = (error[0] < tol) && (error[1] < tol);
}
if (params.ref() == 'y') {
// ---------- run reference
testsweeper::flush_cache( params.cache() );
time = testsweeper::get_wtime();
int64_t info_ref = LAPACKE_gelsy( m, n, nrhs, &A_ref[0], lda, &B_ref[0], ldb, &jpvt_ref[0], rcond, &rank_ref );
time = testsweeper::get_wtime() - time;
if (info_ref != 0) {
fprintf( stderr, "LAPACKE_gelsy returned error %lld\n", llong( info_ref ) );
}
params.ref_time() = time;
// params.ref_gflops() = gflop / time;
}
}
// -----------------------------------------------------------------------------
void test_gelsy( Params& params, bool run )
{
switch (params.datatype()) {
case testsweeper::DataType::Single:
test_gelsy_work< float >( params, run );
break;
case testsweeper::DataType::Double:
test_gelsy_work< double >( params, run );
break;
case testsweeper::DataType::SingleComplex:
test_gelsy_work< std::complex<float> >( params, run );
break;
case testsweeper::DataType::DoubleComplex:
test_gelsy_work< std::complex<double> >( params, run );
break;
default:
throw std::runtime_error( "unknown datatype" );
break;
}
}
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