1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
//===----------------------------------------------------------------------===//
//
// 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 valarray<bool>& vb) const;
#include <valarray>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
{
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]);
bool b[N1] = {true, false, false, true, true, false,
false, true, false, false, false, true};
std::valarray<int> v1(a1, N1);
std::valarray<bool> vb(b, N1);
std::valarray<int> v2(v1[vb]);
assert(v2.size() == 5);
assert(v2[ 0] == 0);
assert(v2[ 1] == 3);
assert(v2[ 2] == 4);
assert(v2[ 3] == 7);
assert(v2[ 4] == 11);
}
{
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]);
bool b[N1] = {true, false, false, true, true, false,
false, true, false, false, false, true};
std::valarray<int> v1(a1, N1);
std::valarray<bool> vb(b, N1);
std::valarray<int> v2((v1 - 1)[vb]);
assert(v2.size() == 5);
assert(v2[ 0] == -1);
assert(v2[ 1] == 2);
assert(v2[ 2] == 3);
assert(v2[ 3] == 6);
assert(v2[ 4] == 10);
}
return 0;
}
|
