50 lines
1.4 KiB
C++
50 lines
1.4 KiB
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 mask_array
|
|
|
|
// void operator-=(const valarray<value_type>& v) const;
|
|
|
|
#include <valarray>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
|
|
const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
|
|
int a2[] = {1, 2, 3, 4, 5};
|
|
const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
|
|
bool b[N1] = {true, false, false, true, true, false,
|
|
false, true, false, false, false, true};
|
|
std::valarray<int> v1(a1, N1);
|
|
std::valarray<int> v2(a2, N2);
|
|
assert(N2 == std::count(b, b+N1, true));
|
|
std::valarray<bool> vb(b, N1);
|
|
v1[vb] -= v2;
|
|
assert(v1.size() == 16);
|
|
assert(v1[ 0] == -1);
|
|
assert(v1[ 1] == 1);
|
|
assert(v1[ 2] == 2);
|
|
assert(v1[ 3] == 1);
|
|
assert(v1[ 4] == 1);
|
|
assert(v1[ 5] == 5);
|
|
assert(v1[ 6] == 6);
|
|
assert(v1[ 7] == 3);
|
|
assert(v1[ 8] == 8);
|
|
assert(v1[ 9] == 9);
|
|
assert(v1[10] == 10);
|
|
assert(v1[11] == 6);
|
|
assert(v1[12] == 12);
|
|
assert(v1[13] == 13);
|
|
assert(v1[14] == 14);
|
|
assert(v1[15] == 15);
|
|
}
|