62 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <valarray>10 11// template <class T> class slice_array12 13// void operator=(const valarray<value_type>& v) const;14 15#include <valarray>16#include <cassert>17 18#include "test_macros.h"19 20int main(int, char**)21{22 int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};23 int a2[] = {-1, -2, -3, -4, -5};24 std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));25 std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));26 std::slice_array<int> s1 = v1[std::slice(1, 5, 3)];27 s1 = v2;28 assert(v1.size() == 16);29 assert(v1[ 0] == 0);30 assert(v1[ 1] == -1);31 assert(v1[ 2] == 2);32 assert(v1[ 3] == 3);33 assert(v1[ 4] == -2);34 assert(v1[ 5] == 5);35 assert(v1[ 6] == 6);36 assert(v1[ 7] == -3);37 assert(v1[ 8] == 8);38 assert(v1[ 9] == 9);39 assert(v1[10] == -4);40 assert(v1[11] == 11);41 assert(v1[12] == 12);42 assert(v1[13] == -5);43 assert(v1[14] == 14);44 assert(v1[15] == 15);45 46 ASSERT_SAME_TYPE(decltype(s1 = v2), void);47 48// The initializer list constructor is disabled in C++03 mode.49#if TEST_STD_VER > 0350 std::valarray<double> m = { 0, 0, 0 };51 std::slice_array<double> s2 = m[std::slice(0, 3, 1)];52 s2 = { 1, 2, 3 };53 assert(m[0] == 1);54 assert(m[1] == 2);55 assert(m[2] == 3);56 57 ASSERT_SAME_TYPE(decltype(s2 = {1, 2, 3}), void);58#endif // TEST_STD_VER > 0359 60 return 0;61}62