xref: /llvm-project/libc/test/src/stdbit/stdc_bit_width_us_test.cpp (revision 041638c4294a9a8375851e0add1ab2c99412c032) 
1 //===-- Unittests for stdc_bit_width_us -----------------------------------===//
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-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "src/__support/CPP/limits.h"
10 #include "src/stdbit/stdc_bit_width_us.h"
11 #include "test/UnitTest/Test.h"
12 
TEST(LlvmLibcStdcBitWidthUsTest,Zero)13 TEST(LlvmLibcStdcBitWidthUsTest, Zero) {
14   EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_width_us(0U), 0U);
15 }
16 
TEST(LlvmLibcStdcBitWidthUsTest,Ones)17 TEST(LlvmLibcStdcBitWidthUsTest, Ones) {
18   for (unsigned i = 0U; i != USHRT_WIDTH; ++i)
19     EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_width_us(USHRT_MAX >> i),
20               USHRT_WIDTH - i);
21 }
22