FONFLIB.C

/*  Copyright 2018 Affonso Amendola
    
    This file is part of WumpusVGA.
    WumpusVGA 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.
    WumpusVGA 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 WumpusVGA.  If not, see <https://www.gnu.org/licenses/>
*/

#include <bios.h>
#include <dos.h>
#include <memory.h>
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>

#include <FONFLIB.H>

char* inttostring(int i, char b[])
{
	char const digit[] = "0123456789";
	char* p = b;
	int shifter = i;

	if(i<0)
	{
		*p++ = '-';
		i*= -1;
	}

	do
	{
		++p;
		shifter = shifter/10;
	}while(shifter);
	*p = '\0';
	do
	{
		*--p = digit[i%10];
		i = i/10;
	}while(i);
	return b;
}

int pow_int(int number, int to_the_power_of)
{
	int i = 0;
	int holder = 0;

	if(to_the_power_of == 0)
	{
		return 1;
	}

	holder = number;
	for(i = 0; i< (to_the_power_of-1); i++)
	{
		holder = holder * number;
	}

	return holder;
}

void fputi(int number, int size, FILE * file)
{
	int i;

	int current_char;

	int middle_of_number = 0;

	for(i = (size-1); i>=0; i--)
	{
		current_char = number;
		current_char = (current_char/pow_int(10,i))%10;
		if(current_char != 0 || i == 0 || middle_of_number)
		{
			middle_of_number = 1;
			fputc(current_char+48, file);	
		}
	}
}