mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
synced 2024-11-27 13:44:15 +01:00
58 lines
2.4 KiB
C
58 lines
2.4 KiB
C
/*
|
|
bit_ops.h
|
|
Functions for dealing with conversion of data between types
|
|
|
|
Copyright (c) 2006 Michael "Chishm" Chisholm
|
|
|
|
Redistribution and use in source and binary forms, with or without modification,
|
|
are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
2. Redistributions in binary form must reproduce the above copyright notice,
|
|
this list of conditions and the following disclaimer in the documentation and/or
|
|
other materials provided with the distribution.
|
|
3. The name of the author may not be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _BIT_OPS_H
|
|
#define _BIT_OPS_H
|
|
|
|
#include <stdint.h>
|
|
|
|
/*-----------------------------------------------------------------
|
|
Functions to deal with little endian values stored in uint8_t arrays
|
|
-----------------------------------------------------------------*/
|
|
static inline uint16_t u8array_to_u16 (const uint8_t* item, int offset) {
|
|
return ( item[offset] | (item[offset + 1] << 8));
|
|
}
|
|
|
|
static inline uint32_t u8array_to_u32 (const uint8_t* item, int offset) {
|
|
return ( item[offset] | (item[offset + 1] << 8) | (item[offset + 2] << 16) | (item[offset + 3] << 24));
|
|
}
|
|
|
|
static inline void u16_to_u8array (uint8_t* item, int offset, uint16_t value) {
|
|
item[offset] = (uint8_t) value;
|
|
item[offset + 1] = (uint8_t)(value >> 8);
|
|
}
|
|
|
|
static inline void u32_to_u8array (uint8_t* item, int offset, uint32_t value) {
|
|
item[offset] = (uint8_t) value;
|
|
item[offset + 1] = (uint8_t)(value >> 8);
|
|
item[offset + 2] = (uint8_t)(value >> 16);
|
|
item[offset + 3] = (uint8_t)(value >> 24);
|
|
}
|
|
|
|
#endif // _BIT_OPS_H
|