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mcl: Fix bug in non-template mcl::bit::ones

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This commit is contained in:
Merry 2022-04-19 18:04:33 +01:00
parent 95422b2091
commit ed9955891f
4 changed files with 44 additions and 2 deletions
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41
externals/mcl/tests/bit/bit_field_tests.cpp vendored Normal file
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// This file is part of the mcl project.
// Copyright (c) 2022 merryhime
// SPDX-License-Identifier: MIT
#include <array>
#include <tuple>
#include <catch2/catch.hpp>
#include <mcl/bit/bit_field.hpp>
#include <mcl/stdint.hpp>
TEST_CASE("mcl::bit::ones", "[bit]") {
const std::array cases{
std::make_tuple<size_t, u8>(0, 0x00),
std::make_tuple<size_t, u8>(1, 0x01),
std::make_tuple<size_t, u8>(2, 0x03),
std::make_tuple<size_t, u8>(3, 0x07),
std::make_tuple<size_t, u8>(4, 0x0f),
std::make_tuple<size_t, u8>(5, 0x1f),
std::make_tuple<size_t, u8>(6, 0x3f),
std::make_tuple<size_t, u8>(7, 0x7f),
std::make_tuple<size_t, u8>(8, 0xff),
};
for (const auto [count, expected] : cases) {
REQUIRE(mcl::bit::ones<u8>(count) == expected);
REQUIRE(mcl::bit::ones<u16>(count) == expected);
REQUIRE(mcl::bit::ones<u32>(count) == expected);
REQUIRE(mcl::bit::ones<u64>(count) == expected);
REQUIRE(mcl::bit::ones<uptr>(count) == expected);
REQUIRE(mcl::bit::ones<size_t>(count) == expected);
}
}
static_assert(mcl::bit::ones<3, u8>() == 0x7);
static_assert(mcl::bit::ones<15, u16>() == 0x7fff);
static_assert(mcl::bit::ones<16, u16>() == 0xffff);
static_assert(mcl::bit::ones<31, u32>() == 0x7fff'ffff);
static_assert(mcl::bit::ones<32, u32>() == 0xffff'ffff);
static_assert(mcl::bit::ones<63, u64>() == 0x7fff'ffff'ffff'ffff);
static_assert(mcl::bit::ones<64, u64>() == 0xffff'ffff'ffff'ffff);