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libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_left_value.pass.cpp

35 lines
918 B
C++

//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <valarray>
// template<class T> class valarray;
// valarray& operator<<=(const value_type& x);
#include <valarray>
#include <cassert>
#include <cstddef>
int main()
{
{
typedef int T;
T a1[] = { 1, 2, 3, 4, 5};
T a2[] = { 8, 16, 24, 32, 40};
const unsigned N = sizeof(a1)/sizeof(a1[0]);
std::valarray<T> v1(a1, N);
std::valarray<T> v2(a2, N);
v1 <<= 3;
assert(v1.size() == v2.size());
for (std::size_t i = 0; i < v1.size(); ++i)
assert(v1[i] == v2[i]);
}
}