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- // 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;
- Real zero(0);
- 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) >= zero );
- }
- VERIFY( numext::abs(x) >= zero );
- 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> >() );
- }
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