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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.
// this is similar to blaspp/test/test_syr.hh,
// except it uses LAPACK++ instead of calling Fortran LAPACK,
// and tests syr< complex >.
#include "test.hh"
#include "lapack.hh"
#include "blas/flops.hh"
#include "print_matrix.hh"
#include "check_gemm2.hh" // uses LAPACK++ instead of Fortran lapack
#include "cblas_wrappers.hh"
#include "blas/syr.hh" // from BLAS++
// -----------------------------------------------------------------------------
template< typename TA, typename TX >
void test_syr_work( Params& params, bool run )
{
using blas::real;
using blas::imag;
using scalar_t = blas::scalar_type< TA, TX >;
using real_t = blas::real_type< scalar_t >;
// get & mark input values
blas::Layout layout = params.layout();
blas::Uplo uplo = params.uplo();
scalar_t alpha = params.alpha.get<scalar_t>();
int64_t n = params.dim.n();
int64_t incx = params.incx();
int64_t align = params.align();
int64_t verbose = params.verbose();
// mark non-standard output values
params.ref_time();
params.ref_gflops();
params.gflops();
if (! run)
return;
// setup
int64_t lda = roundup( n, align );
size_t size_A = size_t(lda)*n;
size_t size_x = (n - 1) * std::abs(incx) + 1;
std::vector<TA> A ( size_A );
std::vector<TA> Aref( size_A );
std::vector<TX> x ( size_x );
int64_t idist = 1;
int64_t iseed[4] = { 0, 0, 0, 1 };
lapack::generate_matrix( params.matrix, n, n, &A[0], lda );
lapack::larnv( idist, iseed, size_x, &x[0] );
Aref = A;
// norms for error check
real_t Anorm = lapack::lansy( lapack::Norm::Fro, uplo, n, &A[0], lda );
real_t Xnorm = blas::nrm2( n, &x[0], std::abs(incx) );
// test error exits
if (params.error_exit() == 'y') {
using blas::Layout;
using blas::Uplo;
assert_throw( blas::syr( Layout(0), uplo, n, alpha, &x[0], incx, &A[0], lda ), blas::Error );
assert_throw( blas::syr( layout, Uplo(0), n, alpha, &x[0], incx, &A[0], lda ), blas::Error );
assert_throw( blas::syr( layout, uplo, -1, alpha, &x[0], incx, &A[0], lda ), blas::Error );
assert_throw( blas::syr( layout, uplo, n, alpha, &x[0], 0, &A[0], lda ), blas::Error );
assert_throw( blas::syr( layout, uplo, n, alpha, &x[0], incx, &A[0], n-1 ), blas::Error );
}
if (verbose >= 1) {
printf( "\n"
"A n=%5lld, lda=%5lld, size=%10lld, norm=%.2e\n"
"x n=%5lld, inc=%5lld, size=%10lld, norm=%.2e\n",
llong( n ), llong( lda ), llong( size_A ), Anorm,
llong( n ), llong( incx ), llong( size_x ), Xnorm );
}
if (verbose >= 2) {
printf( "alpha = %.4e + %.4ei;\n",
real(alpha), imag(alpha) );
printf( "A = " ); print_matrix( n, n, &A[0], lda );
printf( "x = " ); print_vector( n, &x[0], incx );
}
// run test
testsweeper::flush_cache( params.cache() );
double time = testsweeper::get_wtime();
blas::syr( layout, uplo, n, alpha, &x[0], incx, &A[0], lda );
time = testsweeper::get_wtime() - time;
params.time() = time * 1000; // msec
double gflop = blas::Gflop< scalar_t >::syr( n );
params.gflops() = gflop / time;
if (verbose >= 2) {
printf( "A2 = " ); print_matrix( n, n, &A[0], lda );
}
if (params.check() == 'y') {
// run reference
testsweeper::flush_cache( params.cache() );
time = testsweeper::get_wtime();
cblas_syr( cblas_layout_const(layout), cblas_uplo_const(uplo),
n, alpha, &x[0], incx, &Aref[0], lda );
time = testsweeper::get_wtime() - time;
params.ref_time() = time * 1000; // msec
params.ref_gflops() = gflop / time;
if (verbose >= 2) {
printf( "Aref = " ); print_matrix( n, n, &Aref[0], lda );
}
// check error compared to reference
// beta = 1
real_t error;
int64_t okay;
check_herk( uplo, n, 1, alpha, scalar_t(1), Xnorm, Xnorm, Anorm,
&Aref[0], lda, &A[0], lda, &error, &okay );
params.error() = error;
params.okay() = okay;
}
}
// -----------------------------------------------------------------------------
void test_syr( Params& params, bool run )
{
switch (params.datatype()) {
case testsweeper::DataType::Single:
test_syr_work< float, float >( params, run );
break;
case testsweeper::DataType::Double:
test_syr_work< double, double >( params, run );
break;
case testsweeper::DataType::SingleComplex:
test_syr_work< std::complex<float>, std::complex<float> >
( params, run );
break;
case testsweeper::DataType::DoubleComplex:
test_syr_work< std::complex<double>, std::complex<double> >
( params, run );
break;
default:
throw std::runtime_error( "unknown datatype" );
break;
}
}
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