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byte_utils.c
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byte_utils.c
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/*
* byte_utils.c - Functions for dealing with byte format idiosyncrasies.
*
* This file is a part of Minipro.
*
* Minipro is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Minipro is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include "byte_utils.h"
void format_int(unsigned char *out, unsigned int in, unsigned char length, unsigned char endianess) {
int i, idx;
for(i = 0; i < length; i++) {
idx = endianess == MP_LITTLE_ENDIAN ? i : length - 1 - i;
out[i] = (in & 0xFF << idx*8) >> idx*8;
}
}
int load_int(unsigned char *buf, unsigned char length, unsigned char endianess) {
int i, idx, result = 0;
for(i = 0; i < length; i++) {
idx = endianess == MP_LITTLE_ENDIAN ? i : length - 1 - i;
result |= (buf[i] << idx*8);
}
return(result);
}