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//===-- Unittests for stdbit ----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDSList-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "test/UnitTest/Test.h"
/*
* The intent of this test is validate that:
* 1. We provide the definition of the various type generic macros of stdbit.h
* (the macros are transitively included from stdbit-macros.h by stdbit.h).
* 2. It dispatches to the correct underlying function.
* Because unit tests build without public packaging, the object files produced
* do not contain non-namespaced symbols.
*/
/*
* Declare these BEFORE including stdbit-macros.h so that this test may still be
* run even if a given target doesn't yet have these individual entrypoints
* enabled.
*/
#include "stdbit_stub.h"
#include "include/llvm-libc-macros/stdbit-macros.h"
TEST(LlvmLibcStdbitTest, TypeGenericMacroLeadingZeros) {
EXPECT_EQ(stdc_leading_zeros(static_cast<unsigned char>(0U)), 0xAAU);
EXPECT_EQ(stdc_leading_zeros(static_cast<unsigned short>(0U)), 0xABU);
EXPECT_EQ(stdc_leading_zeros(0U), 0xACU);
EXPECT_EQ(stdc_leading_zeros(0UL), 0xADU);
EXPECT_EQ(stdc_leading_zeros(0ULL), 0xAEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroLeadingOnes) {
EXPECT_EQ(stdc_leading_ones(static_cast<unsigned char>(0U)), 0xBAU);
EXPECT_EQ(stdc_leading_ones(static_cast<unsigned short>(0U)), 0xBBU);
EXPECT_EQ(stdc_leading_ones(0U), 0xBCU);
EXPECT_EQ(stdc_leading_ones(0UL), 0xBDU);
EXPECT_EQ(stdc_leading_ones(0ULL), 0xBEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroTrailingZeros) {
EXPECT_EQ(stdc_trailing_zeros(static_cast<unsigned char>(0U)), 0xCAU);
EXPECT_EQ(stdc_trailing_zeros(static_cast<unsigned short>(0U)), 0xCBU);
EXPECT_EQ(stdc_trailing_zeros(0U), 0xCCU);
EXPECT_EQ(stdc_trailing_zeros(0UL), 0xCDU);
EXPECT_EQ(stdc_trailing_zeros(0ULL), 0xCEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroTrailingOnes) {
EXPECT_EQ(stdc_trailing_ones(static_cast<unsigned char>(0U)), 0xDAU);
EXPECT_EQ(stdc_trailing_ones(static_cast<unsigned short>(0U)), 0xDBU);
EXPECT_EQ(stdc_trailing_ones(0U), 0xDCU);
EXPECT_EQ(stdc_trailing_ones(0UL), 0xDDU);
EXPECT_EQ(stdc_trailing_ones(0ULL), 0xDEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroFirstLeadingZero) {
EXPECT_EQ(stdc_first_leading_zero(static_cast<unsigned char>(0U)), 0xEAU);
EXPECT_EQ(stdc_first_leading_zero(static_cast<unsigned short>(0U)), 0xEBU);
EXPECT_EQ(stdc_first_leading_zero(0U), 0xECU);
EXPECT_EQ(stdc_first_leading_zero(0UL), 0xEDU);
EXPECT_EQ(stdc_first_leading_zero(0ULL), 0xEEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroFirstLeadingOne) {
EXPECT_EQ(stdc_first_leading_one(static_cast<unsigned char>(0U)), 0xFAU);
EXPECT_EQ(stdc_first_leading_one(static_cast<unsigned short>(0U)), 0xFBU);
EXPECT_EQ(stdc_first_leading_one(0U), 0xFCU);
EXPECT_EQ(stdc_first_leading_one(0UL), 0xFDU);
EXPECT_EQ(stdc_first_leading_one(0ULL), 0xFEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroFirstTrailingZero) {
EXPECT_EQ(stdc_first_trailing_zero(static_cast<unsigned char>(0U)), 0x0AU);
EXPECT_EQ(stdc_first_trailing_zero(static_cast<unsigned short>(0U)), 0x0BU);
EXPECT_EQ(stdc_first_trailing_zero(0U), 0x0CU);
EXPECT_EQ(stdc_first_trailing_zero(0UL), 0x0DU);
EXPECT_EQ(stdc_first_trailing_zero(0ULL), 0x0EU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroFirstTrailingOne) {
EXPECT_EQ(stdc_first_trailing_one(static_cast<unsigned char>(0U)), 0x1AU);
EXPECT_EQ(stdc_first_trailing_one(static_cast<unsigned short>(0U)), 0x1BU);
EXPECT_EQ(stdc_first_trailing_one(0U), 0x1CU);
EXPECT_EQ(stdc_first_trailing_one(0UL), 0x1DU);
EXPECT_EQ(stdc_first_trailing_one(0ULL), 0x1EU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroCountZeros) {
EXPECT_EQ(stdc_count_zeros(static_cast<unsigned char>(0U)), 0x2AU);
EXPECT_EQ(stdc_count_zeros(static_cast<unsigned short>(0U)), 0x2BU);
EXPECT_EQ(stdc_count_zeros(0U), 0x2CU);
EXPECT_EQ(stdc_count_zeros(0UL), 0x2DU);
EXPECT_EQ(stdc_count_zeros(0ULL), 0x2EU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroCountOnes) {
EXPECT_EQ(stdc_count_ones(static_cast<unsigned char>(0U)), 0x3AU);
EXPECT_EQ(stdc_count_ones(static_cast<unsigned short>(0U)), 0x3BU);
EXPECT_EQ(stdc_count_ones(0U), 0x3CU);
EXPECT_EQ(stdc_count_ones(0UL), 0x3DU);
EXPECT_EQ(stdc_count_ones(0ULL), 0x3EU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroHasSingleBit) {
EXPECT_EQ(stdc_has_single_bit(static_cast<unsigned char>(1U)), false);
EXPECT_EQ(stdc_has_single_bit(static_cast<unsigned short>(1U)), false);
EXPECT_EQ(stdc_has_single_bit(1U), false);
EXPECT_EQ(stdc_has_single_bit(1UL), false);
EXPECT_EQ(stdc_has_single_bit(1ULL), false);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroBitWidth) {
EXPECT_EQ(stdc_bit_width(static_cast<unsigned char>(1U)), 0x4AU);
EXPECT_EQ(stdc_bit_width(static_cast<unsigned short>(1U)), 0x4BU);
EXPECT_EQ(stdc_bit_width(1U), 0x4CU);
EXPECT_EQ(stdc_bit_width(1UL), 0x4DU);
EXPECT_EQ(stdc_bit_width(1ULL), 0x4EU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroBitFloor) {
EXPECT_EQ(stdc_bit_floor(static_cast<unsigned char>(0U)),
static_cast<unsigned char>(0x5AU));
EXPECT_EQ(stdc_bit_floor(static_cast<unsigned short>(0U)),
static_cast<unsigned short>(0x5BU));
EXPECT_EQ(stdc_bit_floor(0U), 0x5CU);
EXPECT_EQ(stdc_bit_floor(0UL), 0x5DUL);
EXPECT_EQ(stdc_bit_floor(0ULL), 0x5EULL);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroBitCeil) {
EXPECT_EQ(stdc_bit_ceil(static_cast<unsigned char>(0U)),
static_cast<unsigned char>(0x6AU));
EXPECT_EQ(stdc_bit_ceil(static_cast<unsigned short>(0U)),
static_cast<unsigned short>(0x6BU));
EXPECT_EQ(stdc_bit_ceil(0U), 0x6CU);
EXPECT_EQ(stdc_bit_ceil(0UL), 0x6DUL);
EXPECT_EQ(stdc_bit_ceil(0ULL), 0x6EULL);
}
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