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