52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
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#ifndef ENDIAN_TOOLS_H
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#define ENDIAN_TOOLS_H 1
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/*
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* Copyright (C) 2013 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#include <stdint.h>
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static inline uint16_t read_le_16(const void *buf, size_t offset)
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{
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const uint8_t *p = (const uint8_t *) buf + offset;
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return
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(((uint16_t) p[0]) << 0) |
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(((uint16_t) p[1]) << 8);
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}
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static inline uint32_t read_le_32(const void *buf, size_t offset)
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{
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const uint8_t *p = (const uint8_t *) buf + offset;
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return
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(((uint32_t) p[0]) << 0) |
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(((uint32_t) p[1]) << 8) |
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(((uint32_t) p[2]) << 16) |
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(((uint32_t) p[3]) << 24);
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}
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static inline void write_le_16(void *buf, size_t offset, uint16_t value)
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{
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uint8_t *p = (uint8_t *) buf + offset;
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p[0] = (value >> 0) & 0xff;
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p[1] = (value >> 8) & 0xff;
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}
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static inline void write_le_32(void *buf, size_t offset, uint32_t value)
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{
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uint8_t *p = (uint8_t *) buf + offset;
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p[0] = (value >> 0) & 0xff;
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p[1] = (value >> 8) & 0xff;
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p[2] = (value >> 16) & 0xff;
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p[3] = (value >> 24) & 0xff;
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}
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#endif // defined(ENDIAN_TOOLS_H)
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