88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
// { dg-do run { target c++14 } }
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// { dg-require-cstdint "" }
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// { dg-require-effective-target random_device }
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// { dg-require-effective-target tls_runtime }
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// { dg-add-options tls }
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// Copyright (C) 2015-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include <experimental/random>
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#include <testsuite_hooks.h>
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void
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test01()
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{
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for (int i = 0; i < 100; ++i)
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{
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const int n = std::experimental::randint(-10, i);
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VERIFY( -10 <= n && n <= i );
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}
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std::experimental::reseed(99u);
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const long n1[] = {
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std::experimental::randint(0, 100),
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std::experimental::randint(0, 100),
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std::experimental::randint(0, 100),
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std::experimental::randint(0, 100),
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std::experimental::randint(0, 100)
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};
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std::experimental::reseed(99u);
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const long n2[] = {
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std::experimental::randint(0, 100),
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std::experimental::randint(0, 100),
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std::experimental::randint(0, 100),
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std::experimental::randint(0, 100),
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std::experimental::randint(0, 100)
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};
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for (int i = 0; i < 5; ++i)
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VERIFY( n1[i] == n2[i] );
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std::experimental::reseed();
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const long n3[] = {
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std::experimental::randint(0, 100),
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std::experimental::randint(0, 100),
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std::experimental::randint(0, 100)
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};
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VERIFY( !(n3[0] == n1[0] && n3[1] == n1[1] && n3[2] == n1[2]) );
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}
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void
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test02()
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{
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auto check = [](auto v) {
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auto n = std::experimental::randint(decltype(v)(0), v);
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static_assert(std::is_same<decltype(n), decltype(v)>::value,
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"return type is correct");
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VERIFY(0 <= n && n <= v);
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};
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check( (short)10 );
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check( 100 );
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check( 1000L );
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check( 10000LL );
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check( (unsigned short)10 );
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check( 100U );
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check( 1000UL );
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check( 10000ULL );
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}
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int main()
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{
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test01();
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test02();
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}
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