diff options
Diffstat (limited to 'libmisc/include')
| -rw-r--r-- | libmisc/include/libmisc/endian.h | 80 |
1 files changed, 79 insertions, 1 deletions
diff --git a/libmisc/include/libmisc/endian.h b/libmisc/include/libmisc/endian.h index b1bc55c..665a8c8 100644 --- a/libmisc/include/libmisc/endian.h +++ b/libmisc/include/libmisc/endian.h @@ -1,6 +1,6 @@ /* libmisc/endian.h - Endian-conversion helpers * - * Copyright (C) 2024 Luke T. Shumaker <lukeshu@lukeshu.com> + * Copyright (C) 2024-2025 Luke T. Shumaker <lukeshu@lukeshu.com> * SPDX-License-Identifier: AGPL-3.0-or-later */ @@ -71,6 +71,45 @@ static inline uint32_t uint32be_unmarshal(uint32be_t in) { return uint32be_decode(in.octets); } +typedef struct { + uint8_t octets[8]; +} uint64be_t; +static_assert(sizeof(uint64be_t) == 8); + +static inline size_t uint64be_encode(uint8_t *out, uint64_t in) { + out[0] = (uint8_t)((in >> 56) & 0xFF); + out[1] = (uint8_t)((in >> 48) & 0xFF); + out[2] = (uint8_t)((in >> 40) & 0xFF); + out[3] = (uint8_t)((in >> 32) & 0xFF); + out[4] = (uint8_t)((in >> 24) & 0xFF); + out[5] = (uint8_t)((in >> 16) & 0xFF); + out[6] = (uint8_t)((in >> 8) & 0xFF); + out[7] = (uint8_t)((in >> 0) & 0xFF); + return 8; +} + +static inline uint64_t uint64be_decode(uint8_t *in) { + return (((uint64_t)(in[0])) << 56) + | (((uint64_t)(in[1])) << 48) + | (((uint64_t)(in[2])) << 40) + | (((uint64_t)(in[3])) << 32) + | (((uint64_t)(in[4])) << 24) + | (((uint64_t)(in[5])) << 16) + | (((uint64_t)(in[6])) << 8) + | (((uint64_t)(in[7])) << 0) + ; +} + +static inline uint64be_t uint64be_marshal(uint64_t in) { + uint64be_t out; + uint64be_encode(out.octets, in); + return out; +} + +static inline uint64_t uint64be_unmarshal(uint64be_t in) { + return uint64be_decode(in.octets); +} + /* Little endian **************************************************************/ typedef struct { @@ -131,4 +170,43 @@ static inline uint32_t uint32le_unmarshal(uint32le_t in) { return uint32le_decode(in.octets); } +typedef struct { + uint8_t octets[8]; +} uint64le_t; +static_assert(sizeof(uint64le_t) == 8); + +static inline size_t uint64le_encode(uint8_t *out, uint64_t in) { + out[0] = (uint8_t)((in >> 0) & 0xFF); + out[1] = (uint8_t)((in >> 8) & 0xFF); + out[2] = (uint8_t)((in >> 16) & 0xFF); + out[3] = (uint8_t)((in >> 24) & 0xFF); + out[4] = (uint8_t)((in >> 32) & 0xFF); + out[5] = (uint8_t)((in >> 40) & 0xFF); + out[6] = (uint8_t)((in >> 48) & 0xFF); + out[7] = (uint8_t)((in >> 56) & 0xFF); + return 8; +} + +static inline uint64_t uint64le_decode(uint8_t *in) { + return (((uint64_t)(in[0])) << 0) + | (((uint64_t)(in[1])) << 8) + | (((uint64_t)(in[2])) << 16) + | (((uint64_t)(in[3])) << 24) + | (((uint64_t)(in[4])) << 32) + | (((uint64_t)(in[5])) << 40) + | (((uint64_t)(in[6])) << 48) + | (((uint64_t)(in[7])) << 56) + ; +} + +static inline uint64le_t uint64le_marshal(uint64_t in) { + uint64le_t out; + uint64le_encode(out.octets, in); + return out; +} + +static inline uint64_t uint64le_unmarshal(uint64le_t in) { + return uint64le_decode(in.octets); +} + #endif /* _LIBMISC_ENDIAN_H_ */ |