M2-Planet/functions/number_pack.c

42 lines
1.2 KiB
C

/* Copyright (C) 2016 Jeremiah Orians
* This file is part of M2-Planet.
*
* M2-Planet 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.
*
* M2-Planet 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.
*
* You should have received a copy of the GNU General Public License
* along with M2-Planet. If not, see <http://www.gnu.org/licenses/>.
*/
#include<stdlib.h>
#include<string.h>
#include<stdio.h>
// void* calloc(int count, int size);
void file_print(char* s, FILE* f);
int hex2char(int c);
char* number_to_hex(int a, int bytes)
{
char* result = calloc(1 + (bytes << 1), sizeof(char));
int i = 0;
int divisor = (bytes << 3);
/* Simply collect numbers until divisor is gone */
while(0 != divisor)
{
divisor = divisor - 4;
result[i] = hex2char((a >> divisor) & 0xF);
i = i + 1;
}
return result;
}