forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
1.7 KiB
C++
58 lines
1.7 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 valarray;
|
|
|
|
// valarray(const indirect_array<value_type>& ia);
|
|
|
|
#include <valarray>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
int a[] = { 0, 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};
|
|
const std::size_t N1 = sizeof(a)/sizeof(a[0]);
|
|
std::size_t s[] = { 3, 4, 5, 7, 8, 9, 11, 12, 13, 15, 16, 17,
|
|
22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
|
|
const std::size_t S = sizeof(s)/sizeof(s[0]);
|
|
std::valarray<int> v1(a, N1);
|
|
std::valarray<std::size_t> ia(s, S);
|
|
std::valarray<int> v(v1[ia]);
|
|
assert(v.size() == 24);
|
|
assert(v[ 0] == 3);
|
|
assert(v[ 1] == 4);
|
|
assert(v[ 2] == 5);
|
|
assert(v[ 3] == 7);
|
|
assert(v[ 4] == 8);
|
|
assert(v[ 5] == 9);
|
|
assert(v[ 6] == 11);
|
|
assert(v[ 7] == 12);
|
|
assert(v[ 8] == 13);
|
|
assert(v[ 9] == 15);
|
|
assert(v[10] == 16);
|
|
assert(v[11] == 17);
|
|
assert(v[12] == 22);
|
|
assert(v[13] == 23);
|
|
assert(v[14] == 24);
|
|
assert(v[15] == 26);
|
|
assert(v[16] == 27);
|
|
assert(v[17] == 28);
|
|
assert(v[18] == 30);
|
|
assert(v[19] == 31);
|
|
assert(v[20] == 32);
|
|
assert(v[21] == 34);
|
|
assert(v[22] == 35);
|
|
assert(v[23] == 36);
|
|
}
|