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Fix the recently introduced test to work on C++03

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@304629 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2017-06-03 01:21:29 +00:00
parent b1d8bca727
commit 118d2fef02
1 changed files with 13 additions and 5 deletions
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18
test/libcxx/containers/unord/next_pow2.pass.cpp
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@@ -8,6 +8,7 @@
//===----------------------------------------------------------------------===//
//
// REQUIRES: long_tests
// UNSUPPORTED: c++98, c++03
// Not a portable test
@@ -30,6 +31,12 @@ is_power_of_two(unsigned long n)
return __builtin_popcount(n) == 1;
}
void test_next_pow2_val(size_t n)
{
std::size_t npow2 = std::__next_hash_pow2(n);
assert(is_power_of_two(npow2) && npow2 > n);
}
void
test_next_pow2()
{
@@ -47,11 +54,12 @@ test_next_pow2()
assert(std::__next_hash_pow2(pow2) == pow2);
}
for (std::size_t n : {3, 7, 9, 15, 127, 129})
{
std::size_t npow2 = std::__next_hash_pow2(n);
assert(is_power_of_two(npow2) && npow2 > n);
}
test_next_pow2_val(3);
test_next_pow2_val(7);
test_next_pow2_val(9);
test_next_pow2_val(15);
test_next_pow2_val(127);
test_next_pow2_val(129);
}
// Note: this is only really useful when run with -fsanitize=undefined.