xref: /llvm-project/libc/test/src/stdbit/stdc_bit_floor_uc_test.cpp (revision 101a13df71734b06116846a3a39c0880eb33456d) 
1 //===-- Unittests for stdc_bit_floor_uc -----------------------------------===//
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_floor_uc.h"
11 #include "test/UnitTest/Test.h"
12 
TEST(LlvmLibcStdcBitfloorUcTest,Zero)13 TEST(LlvmLibcStdcBitfloorUcTest, Zero) {
14   EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_floor_uc(0U),
15             static_cast<unsigned char>(0));
16 }
17 
TEST(LlvmLibcStdcBitfloorUcTest,Ones)18 TEST(LlvmLibcStdcBitfloorUcTest, Ones) {
19   for (unsigned i = 0U; i != UCHAR_WIDTH; ++i)
20     EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_floor_uc(UCHAR_MAX >> i),
21               static_cast<unsigned char>(1 << (UCHAR_WIDTH - i - 1)));
22 }
23