llvm-project/libc/test/src/stdbit/stdc_leading_ones_ul_test.cpp
Nick Desaulniers edbd93d370
[libc][stdbit] fix return types (#80337)
All of the functions I've previously implemented return an unsigned int; not
the parameter type.
2024-02-01 13:09:33 -08:00

23 lines
840 B
C++

//===-- Unittests for stdc_leading_ones_ul --------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "src/__support/CPP/limits.h"
#include "src/stdbit/stdc_leading_ones_ul.h"
#include "test/UnitTest/Test.h"
TEST(LlvmLibcStdcLeadingOnesUlTest, All) {
EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_ones_ul(ULONG_MAX),
static_cast<unsigned>(ULONG_WIDTH));
}
TEST(LlvmLibcStdcLeadingOnesUlTest, ZeroHot) {
for (unsigned i = 0U; i != ULONG_WIDTH; ++i)
EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_ones_ul(~(1UL << i)),
ULONG_WIDTH - i - 1U);
}