1 //===-- Unittests for stdc_bit_ceil_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_ceil_us.h"
11 #include "test/UnitTest/Test.h"
12
TEST(LlvmLibcStdcBitceilUsTest,Zero)13 TEST(LlvmLibcStdcBitceilUsTest, Zero) {
14 EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_us(0U),
15 static_cast<unsigned short>(1));
16 }
17
TEST(LlvmLibcStdcBitceilUsTest,Ones)18 TEST(LlvmLibcStdcBitceilUsTest, Ones) {
19 for (unsigned i = 0U; i != USHRT_WIDTH; ++i)
20 EXPECT_EQ(
21 LIBC_NAMESPACE::stdc_bit_ceil_us(static_cast<unsigned short>(1U << i)),
22 static_cast<unsigned short>(1U << i));
23 }
24
TEST(LlvmLibcStdcBitceilUsTest,OneLessThanPowsTwo)25 TEST(LlvmLibcStdcBitceilUsTest, OneLessThanPowsTwo) {
26 for (unsigned i = 2U; i != USHRT_WIDTH; ++i)
27 EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_us(
28 static_cast<unsigned short>((1U << i) - 1)),
29 static_cast<unsigned short>(1U << i));
30 }
31
TEST(LlvmLibcStdcBitceilUsTest,OneMoreThanPowsTwo)32 TEST(LlvmLibcStdcBitceilUsTest, OneMoreThanPowsTwo) {
33 for (unsigned i = 1U; i != USHRT_WIDTH - 1; ++i)
34 EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_us(
35 static_cast<unsigned short>((1U << i) + 1)),
36 static_cast<unsigned short>(1U << (i + 1)));
37 }
38