| 1 | /* |
| 2 | * Copyright (c) 2022 Philippe Proulx <pproulx@efficios.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | */ |
| 6 | |
| 7 | #ifndef BABELTRACE_CPP_COMMON_BT2C_STD_INT_HPP |
| 8 | #define BABELTRACE_CPP_COMMON_BT2C_STD_INT_HPP |
| 9 | |
| 10 | #include <cstdint> |
| 11 | |
| 12 | namespace bt2c { |
| 13 | |
| 14 | /* |
| 15 | * Whether or not an integer is signed. |
| 16 | */ |
| 17 | enum class Signedness |
| 18 | { |
| 19 | Unsigned, |
| 20 | Signed, |
| 21 | }; |
| 22 | |
| 23 | namespace internal { |
| 24 | |
| 25 | template <std::size_t LenBitsV, Signedness SignednessV> |
| 26 | struct StdIntTBase; |
| 27 | |
| 28 | template <> |
| 29 | struct StdIntTBase<8, Signedness::Signed> |
| 30 | { |
| 31 | using Type = std::int8_t; |
| 32 | }; |
| 33 | |
| 34 | template <> |
| 35 | struct StdIntTBase<8, Signedness::Unsigned> |
| 36 | { |
| 37 | using Type = std::uint8_t; |
| 38 | }; |
| 39 | |
| 40 | template <> |
| 41 | struct StdIntTBase<16, Signedness::Signed> |
| 42 | { |
| 43 | using Type = std::int16_t; |
| 44 | }; |
| 45 | |
| 46 | template <> |
| 47 | struct StdIntTBase<16, Signedness::Unsigned> |
| 48 | { |
| 49 | using Type = std::uint16_t; |
| 50 | }; |
| 51 | |
| 52 | template <> |
| 53 | struct StdIntTBase<32, Signedness::Signed> |
| 54 | { |
| 55 | using Type = std::int32_t; |
| 56 | }; |
| 57 | |
| 58 | template <> |
| 59 | struct StdIntTBase<32, Signedness::Unsigned> |
| 60 | { |
| 61 | using Type = std::uint32_t; |
| 62 | }; |
| 63 | |
| 64 | template <> |
| 65 | struct StdIntTBase<64, Signedness::Signed> |
| 66 | { |
| 67 | using Type = std::int64_t; |
| 68 | }; |
| 69 | |
| 70 | template <> |
| 71 | struct StdIntTBase<64, Signedness::Unsigned> |
| 72 | { |
| 73 | using Type = std::uint64_t; |
| 74 | }; |
| 75 | |
| 76 | } /* namespace internal */ |
| 77 | |
| 78 | /* |
| 79 | * Standard fixed-length integer type `Type` of length `LenBitsV` bits |
| 80 | * and signedness `SignednessV`. |
| 81 | * |
| 82 | * `LenBitsV` must be one of 8, 16, 32, or 64. |
| 83 | * |
| 84 | * For example, `StdIntT<32, Signedness::Signed>` is `std::int32_t`. |
| 85 | */ |
| 86 | template <std::size_t LenBitsV, Signedness SignednessV> |
| 87 | using StdIntT = typename internal::StdIntTBase<LenBitsV, SignednessV>::Type; |
| 88 | |
| 89 | } /* namespace bt2c */ |
| 90 | |
| 91 | #endif /* BABELTRACE_CPP_COMMON_BT2C_STD_INT_HPP */ |