Mercurial > hg > CbC > CbC_gcc
view libstdc++-v3/testsuite/26_numerics/lerp.cc @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
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// Copyright (C) 2019-2020 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // <http://www.gnu.org/licenses/>. // { dg-options "-std=gnu++2a" } // { dg-do run { target c++2a } } #include <cmath> #ifndef __cpp_lib_interpolate # error "Feature-test macro for midpoint and lerp missing" #elif __cpp_lib_interpolate != 201902L # error "Feature-test macro for midpoint and lerp has wrong value" #endif #include <limits> #include <testsuite_hooks.h> void test01() { using lim = std::numeric_limits<double>; VERIFY( std::lerp(0.0, 1.0, 0.0) == 0.0 ); VERIFY( std::lerp(-2.0, 10.0, 1.0) == 10.0 ); VERIFY( std::lerp(2.0, -10.0, 1.0) == -10.0 ); VERIFY( std::lerp(-8.0, 10.0, 0.5) == 1.0 ); VERIFY( std::lerp(-10.0, 10.0, 0.25) == -5.0 ); VERIFY( std::lerp(10.0, -10.0, 0.375) == 2.5 ); VERIFY( std::lerp(2.0, 2.0, 200.0) == 2.0 ); VERIFY( std::lerp(2.0, 4.0, 200.0) == 402.0 ); VERIFY( std::lerp(2.0, 4.0, -20.0) == -38.0 ); VERIFY( std::lerp(1.1, 30201.1, 0) == 1.1 ); VERIFY( std::lerp(1.1, 30201.1, 1) == 30201.1 ); VERIFY( std::lerp(1.1, -30201.1, 0) == 1.1 ); VERIFY( std::lerp(1.1, -30201.1, 1) == -30201.1 ); VERIFY( std::lerp(1.1, 1.1, lim::infinity()) == 1.1 ); VERIFY( std::isfinite(std::lerp(1.1, 1.1+lim::min(), lim::max())) ); VERIFY( std::lerp(lim::max(), lim::max(), 1) == lim::max() ); VERIFY( std::lerp(lim::max(), lim::max()/9e9, 0) == lim::max() ); VERIFY( std::lerp(lim::max()/9e9, lim::max(), 1) == lim::max() ); } void test02() { using lim = std::numeric_limits<float>; VERIFY( std::lerp(0.0f, 1.0f, 0.0f) == 0.0f ); VERIFY( std::lerp(-2.0f, 10.0f, 1.0f) == 10.0f ); VERIFY( std::lerp(2.0f, -10.0f, 1.0f) == -10.0f ); VERIFY( std::lerp(-8.0f, 10.0f, 0.5f) == 1.0f ); VERIFY( std::lerp(-10.0f, 10.0f, 0.25f) == -5.0f ); VERIFY( std::lerp(10.0f, -10.0f, 0.375f) == 2.5f ); VERIFY( std::lerp(2.0f, 2.0f, 200.0f) == 2.0f ); VERIFY( std::lerp(2.0f, 4.0f, 200.0f) == 402.0f ); VERIFY( std::lerp(2.0f, 4.0f, -20.0f) == -38.0f ); VERIFY( std::lerp(1.1f, 30201.1f, 0) == 1.1f ); VERIFY( std::lerp(1.1f, 30201.1f, 1) == 30201.1f ); VERIFY( std::lerp(1.1f, -30201.1f, 0) == 1.1f ); VERIFY( std::lerp(1.1f, -30201.1f, 1) == -30201.1f ); VERIFY( std::lerp(1.1f, 1.1f, lim::infinity()) == 1.1f ); VERIFY( std::isfinite(std::lerp(1.1f, 1.1f+lim::min(), lim::max())) ); VERIFY( std::lerp(lim::max(), lim::max(), 1) == lim::max() ); VERIFY( std::lerp(lim::max(), lim::max()/9e9f, 0) == lim::max() ); VERIFY( std::lerp(lim::max()/9e9f, lim::max(), 1) == lim::max() ); } void test03() { using lim = std::numeric_limits<long double>; VERIFY( std::lerp(0.0l, 1.0l, 0.0l) == 0.0l ); VERIFY( std::lerp(-2.0l, 10.0l, 1.0l) == 10.0l ); VERIFY( std::lerp(2.0l, -10.0l, 1.0l) == -10.0l ); VERIFY( std::lerp(-8.0l, 10.0l, 0.5l) == 1.0l ); VERIFY( std::lerp(-10.0l, 10.0l, 0.25l) == -5.0l ); VERIFY( std::lerp(10.0l, -10.0l, 0.375l) == 2.5l ); VERIFY( std::lerp(2.0l, 2.0l, 200.0l) == 2.0l ); VERIFY( std::lerp(2.0l, 4.0l, 200.0l) == 402.0l ); VERIFY( std::lerp(2.0l, 4.0l, -20.0l) == -38.0l ); VERIFY( std::lerp(1.1l, 30201.1l, 0) == 1.1l ); VERIFY( std::lerp(1.1l, 30201.1l, 1) == 30201.1l ); VERIFY( std::lerp(1.1l, -30201.1l, 0) == 1.1l ); VERIFY( std::lerp(1.1l, -30201.1l, 1) == -30201.1l ); VERIFY( std::lerp(1.1l, 1.1l, lim::infinity()) == 1.1l ); VERIFY( std::isfinite(std::lerp(1.1l, 1.1l+lim::min(), lim::max())) ); VERIFY( std::lerp(lim::max(), lim::max(), 1) == lim::max() ); VERIFY( std::lerp(lim::max(), lim::max()/9e9l, 0) == lim::max() ); VERIFY( std::lerp(lim::max()/9e9l, lim::max(), 1) == lim::max() ); } int main() { test01(); test02(); test03(); }