mirror of
https://gitlab.com/libeigen/eigen.git
synced 2024-12-21 07:19:46 +08:00
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
|
|
// for linear algebra.
|
|
//
|
|
// Copyright (C) 2017 Gael Guennebaud <gael.guennebaud@inria.fr>
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla
|
|
// Public License v. 2.0. If a copy of the MPL was not distributed
|
|
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
|
|
#include "main.h"
|
|
|
|
template<typename T>
|
|
void check_abs() {
|
|
typedef typename NumTraits<T>::Real Real;
|
|
|
|
if(NumTraits<T>::IsSigned)
|
|
VERIFY_IS_EQUAL(numext::abs(-T(1)), T(1));
|
|
VERIFY_IS_EQUAL(numext::abs(T(0)), T(0));
|
|
VERIFY_IS_EQUAL(numext::abs(T(1)), T(1));
|
|
|
|
for(int k=0; k<g_repeat*100; ++k)
|
|
{
|
|
T x = internal::random<T>();
|
|
if(!internal::is_same<T,bool>::value)
|
|
x = x/Real(2);
|
|
if(NumTraits<T>::IsSigned)
|
|
{
|
|
VERIFY_IS_EQUAL(numext::abs(x), numext::abs(-x));
|
|
VERIFY( numext::abs(-x) >= Real(0));
|
|
}
|
|
VERIFY( numext::abs(x) >= Real(0));
|
|
VERIFY_IS_APPROX( numext::abs2(x), numext::abs2(numext::abs(x)) );
|
|
}
|
|
}
|
|
|
|
void test_numext() {
|
|
CALL_SUBTEST( check_abs<bool>() );
|
|
CALL_SUBTEST( check_abs<signed char>() );
|
|
CALL_SUBTEST( check_abs<unsigned char>() );
|
|
CALL_SUBTEST( check_abs<short>() );
|
|
CALL_SUBTEST( check_abs<unsigned short>() );
|
|
CALL_SUBTEST( check_abs<int>() );
|
|
CALL_SUBTEST( check_abs<unsigned int>() );
|
|
CALL_SUBTEST( check_abs<long>() );
|
|
CALL_SUBTEST( check_abs<unsigned long>() );
|
|
CALL_SUBTEST( check_abs<half>() );
|
|
CALL_SUBTEST( check_abs<float>() );
|
|
CALL_SUBTEST( check_abs<double>() );
|
|
CALL_SUBTEST( check_abs<long double>() );
|
|
|
|
CALL_SUBTEST( check_abs<std::complex<float> >() );
|
|
CALL_SUBTEST( check_abs<std::complex<double> >() );
|
|
}
|