a095315b3c
basic/ can be used by everything
cannot use anything outside of basic/
libsystemd/ can use basic/
cannot use shared/
shared/ can use libsystemd/
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Tom Gundersen
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdint.h>
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static inline uint16_t unaligned_read_be16(const void *_u) {
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const uint8_t *u = _u;
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return (((uint16_t) u[0]) << 8) |
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((uint16_t) u[1]);
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}
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static inline uint32_t unaligned_read_be32(const void *_u) {
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const uint8_t *u = _u;
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return (((uint32_t) unaligned_read_be16(u)) << 16) |
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((uint32_t) unaligned_read_be16(u + 2));
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}
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static inline uint64_t unaligned_read_be64(const void *_u) {
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const uint8_t *u = _u;
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return (((uint64_t) unaligned_read_be32(u)) << 32) |
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((uint64_t) unaligned_read_be32(u + 4));
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}
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static inline void unaligned_write_be16(void *_u, uint16_t a) {
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uint8_t *u = _u;
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u[0] = (uint8_t) (a >> 8);
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u[1] = (uint8_t) a;
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}
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static inline void unaligned_write_be32(void *_u, uint32_t a) {
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uint8_t *u = _u;
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unaligned_write_be16(u, (uint16_t) (a >> 16));
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unaligned_write_be16(u + 2, (uint16_t) a);
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}
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static inline void unaligned_write_be64(void *_u, uint64_t a) {
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uint8_t *u = _u;
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unaligned_write_be32(u, (uint32_t) (a >> 32));
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unaligned_write_be32(u + 4, (uint32_t) a);
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}
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