ft_printf_floatutil2_bonus.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_printf_floatutil2_bonus.c                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: dnakano <dnakano@student.42tokyo.jp>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/10/13 15:48:02 by dnakano           #+#    #+#             */
/*   Updated: 2020/10/18 12:10:21 by dnakano          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libftprintf.h"

void			ft_mts_divbytwo(int8_t *mts, int size)
{
	int		i;

	i = 0;
	while (i < size - 1)
	{
		mts[i + 1] += (mts[i] % 2) * 10;
		mts[i] /= 2;
		i++;
	}
}

void			ft_arr_add(int8_t *a, int8_t *b, int size)
{
	int		i;

	i = size - 1;
	while (i >= 0)
	{
		a[i] += b[i];
		if (a[i] >= 10 && i != 0)
		{
			a[i] -= 10;
			a[i - 1] += 1;
		}
		i--;
	}
}

void			ft_itg_dbl(int8_t *itg, int size)
{
	int		i;

	i = size - 1;
	while (i >= 0)
	{
		itg[i] *= 2;
		if (i < size - 1 && itg[i + 1] >= 10)
		{
			itg[i] += 1;
			itg[i + 1] -= 10;
		}
		i--;
	}
}

void			ft_float_roundup(t_float *iflt, int digit)
{
	int		i;

	i = digit;
	while (i < 0)
	{
		iflt->mts_dec[-i - 1]++;
		if (iflt->mts_dec[-i - 1] >= 10)
			iflt->mts_dec[-i - 1] -= 10;
		else
			return ;
		i++;
	}
	while (i < FLT_INTSIZE)
	{
		iflt->int_dec[FLT_INTSIZE - i - 1]++;
		if (iflt->int_dec[FLT_INTSIZE - i - 1] >= 10)
			iflt->int_dec[FLT_INTSIZE - i - 1] -= 10;
		else
			return ;
		i++;
	}
}