d6d1171f2c
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@104224 91177308-0d34-0410-b5e6-96231b3b80d8
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <random>
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// template<class RealType = double>
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// class piecewise_constant_distribution
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// template<class UnaryOperation>
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// piecewise_constant_distribution(size_t nw, result_type xmin,
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// result_type xmax, UnaryOperation fw);
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#include <random>
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#include <cassert>
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double fw(double x)
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{
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return 2*x;
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}
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int main()
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{
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{
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typedef std::piecewise_constant_distribution<> D;
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D d(0, 0, 1, fw);
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std::vector<double> iv = d.intervals();
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assert(iv.size() == 2);
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assert(iv[0] == 0);
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assert(iv[1] == 1);
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std::vector<double> dn = d.densities();
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assert(dn.size() == 1);
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assert(dn[0] == 1);
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}
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{
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typedef std::piecewise_constant_distribution<> D;
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D d(1, 10, 12, fw);
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std::vector<double> iv = d.intervals();
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assert(iv.size() == 2);
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assert(iv[0] == 10);
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assert(iv[1] == 12);
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std::vector<double> dn = d.densities();
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assert(dn.size() == 1);
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assert(dn[0] == 0.5);
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}
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{
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typedef std::piecewise_constant_distribution<> D;
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D d(2, 6, 14, fw);
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std::vector<double> iv = d.intervals();
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assert(iv.size() == 3);
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assert(iv[0] == 6);
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assert(iv[1] == 10);
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assert(iv[2] == 14);
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std::vector<double> dn = d.densities();
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assert(dn.size() == 2);
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assert(dn[0] == 0.1);
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assert(dn[1] == 0.15);
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}
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}
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