1 //===-- Unittests for stdc_bit_ceil_ull -----------------------------------===//
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_ull.h"
11 #include "test/UnitTest/Test.h"
12
TEST(LlvmLibcStdcBitceilUllTest,Zero)13 TEST(LlvmLibcStdcBitceilUllTest, Zero) {
14 EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_ull(0ULL), 1ULL);
15 }
16
TEST(LlvmLibcStdcBitceilUllTest,Ones)17 TEST(LlvmLibcStdcBitceilUllTest, Ones) {
18 for (unsigned i = 0U; i != ULLONG_WIDTH; ++i)
19 EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_ull(1ULL << i), 1ULL << i);
20 }
21
TEST(LlvmLibcStdcBitceilUllTest,OneLessThanPowsTwo)22 TEST(LlvmLibcStdcBitceilUllTest, OneLessThanPowsTwo) {
23 for (unsigned i = 2U; i != ULLONG_WIDTH; ++i)
24 EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_ull((1ULL << i) - 1), 1ULL << i);
25 }
26
TEST(LlvmLibcStdcBitceilUllTest,OneMoreThanPowsTwo)27 TEST(LlvmLibcStdcBitceilUllTest, OneMoreThanPowsTwo) {
28 for (unsigned i = 1U; i != ULLONG_WIDTH - 1; ++i)
29 EXPECT_EQ(LIBC_NAMESPACE::stdc_bit_ceil_ull((1ULL << i) + 1),
30 1ULL << (i + 1));
31 }
32