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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>
#if LAPACK_VERSION >= 30700 // >= 3.7.0
// -----------------------------------------------------------------------------
template< typename scalar_t >
void test_geqr_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 align = params.align();
// mark non-standard output values
params.ref_time();
params.ref_gflops();
params.gflops();
if (! run)
return;
// ---------- setup
int64_t lda = roundup( blas::max( 1, m ), align );
size_t size_A = (size_t) lda * n;
std::vector< scalar_t > A_tst( size_A );
std::vector< scalar_t > A_ref( size_A );
std::vector< scalar_t > T_tst( 5 ); // 5 is minimum
// query for T size (pass tsize = -1 for optimal, tsize = -2 for minimum)
int64_t info_tst = lapack::geqr( m, n, &A_tst[0], lda, &T_tst[0], -1 );
if (info_tst != 0) {
fprintf( stderr, "lapack::geqr query returned error %lld\n", llong( info_tst ) );
}
int64_t tsize = std::real( T_tst[0] );
assert( tsize >= 5 );
T_tst.resize( tsize );
std::vector< scalar_t > T_ref( tsize );
int64_t idist = 1;
int64_t iseed[4] = { 0, 1, 2, 3 };
lapack::larnv( idist, iseed, A_tst.size(), &A_tst[0] );
A_ref = A_tst;
// ---------- run test
testsweeper::flush_cache( params.cache() );
double time = testsweeper::get_wtime();
info_tst = lapack::geqr( m, n, &A_tst[0], lda, &T_tst[0], tsize );
time = testsweeper::get_wtime() - time;
if (info_tst != 0) {
fprintf( stderr, "lapack::geqr returned error %lld\n", llong( info_tst ) );
}
params.time() = time;
double gflop = lapack::Gflop< scalar_t >::geqrf( m, n );
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_geqr( m, n, &A_ref[0], lda, &T_ref[0], tsize );
time = testsweeper::get_wtime() - time;
if (info_ref != 0) {
fprintf( stderr, "LAPACKE_geqr returned error %lld\n", llong( info_ref ) );
}
params.ref_time() = time;
params.ref_gflops() = gflop / time;
// ---------- check error compared to reference
real_t error = 0;
if (info_tst != info_ref) {
error = 1;
}
error += abs_error( A_tst, A_ref );
error += abs_error( T_tst, T_ref );
params.error() = error;
params.okay() = (error == 0); // expect lapackpp == lapacke
}
}
// -----------------------------------------------------------------------------
void test_geqr( Params& params, bool run )
{
switch (params.datatype()) {
case testsweeper::DataType::Single:
test_geqr_work< float >( params, run );
break;
case testsweeper::DataType::Double:
test_geqr_work< double >( params, run );
break;
case testsweeper::DataType::SingleComplex:
test_geqr_work< std::complex<float> >( params, run );
break;
case testsweeper::DataType::DoubleComplex:
test_geqr_work< std::complex<double> >( params, run );
break;
default:
throw std::runtime_error( "unknown datatype" );
break;
}
}
#else
// -----------------------------------------------------------------------------
void test_geqr( Params& params, bool run )
{
fprintf( stderr, "geqr requires LAPACK >= 3.7.0\n\n" );
exit(0);
}
#endif // LAPACK >= 3.7.0
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