79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <valarray>
|
|
|
|
// template<class T> class valarray;
|
|
|
|
// valarray operator-() const;
|
|
|
|
#include <valarray>
|
|
#include <cassert>
|
|
#include <cstddef>
|
|
|
|
#include "test_macros.h"
|
|
|
|
int main(int, char**)
|
|
{
|
|
{
|
|
typedef int T;
|
|
T a[] = {1, 2, 3, 4, 5};
|
|
const unsigned N = sizeof(a)/sizeof(a[0]);
|
|
std::valarray<T> v(a, N);
|
|
std::valarray<T> v2 = -v;
|
|
assert(v2.size() == v.size());
|
|
for (std::size_t i = 0; i < v2.size(); ++i)
|
|
assert(v2[i] == -v[i]);
|
|
}
|
|
{
|
|
typedef double T;
|
|
T a[] = {1, 2.5, 3, 4.25, 5};
|
|
const unsigned N = sizeof(a)/sizeof(a[0]);
|
|
std::valarray<T> v(a, N);
|
|
std::valarray<T> v2 = -v;
|
|
assert(v2.size() == v.size());
|
|
for (std::size_t i = 0; i < v2.size(); ++i)
|
|
assert(v2[i] == -v[i]);
|
|
}
|
|
{
|
|
typedef std::valarray<double> T;
|
|
T a[] = {T(1), T(2), T(3), T(4), T(5)};
|
|
const unsigned N = sizeof(a)/sizeof(a[0]);
|
|
std::valarray<T> v(a, N);
|
|
std::valarray<T> v2 = -v;
|
|
assert(v2.size() == v.size());
|
|
for (unsigned i = 0; i < N; ++i)
|
|
{
|
|
assert(v2[i].size() == v[i].size());
|
|
for (std::size_t j = 0; j < v[i].size(); ++j)
|
|
assert(v2[i][j] == -v[i][j]);
|
|
}
|
|
}
|
|
{
|
|
typedef double T;
|
|
T a[] = {1, 2.5, 3, 4.25, 5};
|
|
const unsigned N = sizeof(a)/sizeof(a[0]);
|
|
std::valarray<T> v(a, N);
|
|
std::valarray<T> v2 = -(v + v);
|
|
assert(v2.size() == v.size());
|
|
for (std::size_t i = 0; i < v2.size(); ++i)
|
|
assert(v2[i] == -2*v[i]);
|
|
}
|
|
{
|
|
// Make sure we don't have dangling reference problems with unary expressions
|
|
int array[] = {1, 2, 3};
|
|
std::valarray<int> a(array, 3);
|
|
std::valarray<int> b(array, 3);
|
|
auto c = -a * b;
|
|
assert(c.size() == 3);
|
|
assert(c[0] == -1 && c[1] == -4 && c[2] == -9);
|
|
}
|
|
|
|
return 0;
|
|
}
|