main.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        ::::::::            */
/*   main.c                                             :+:    :+:            */
/*                                                     +:+                    */
/*   By: aholster <aholster@student.codam.nl>         +#+                     */
/*                                                   +#+                      */
/*   Created: 2019/07/23 14:45:22 by aholster       #+#    #+#                */
/*   Updated: 2019/09/12 18:16:31 by aholster      ########   odam.nl         */
/*                                                                            */
/* ************************************************************************** */

#include "float_tech.h"
#include <stdio.h>

static void	put_annotation(unsigned short mexponent, long double input)
{
	char	*floatret;
	int		lenhold;
	int		ruler;
	int		precision;
	size_t	size;
	int		status;

	printf("\n");
	printf(" hex:\t%LA\n", input);
	printf(" Float:\t%Le\n", input);
	printf(" Raw exponent: %hu, Bias adjusted exponent: %d\n",\
	mexponent, mexponent - 16383);
	precision = 14;
	status = ft_custom_ld_to_text(input, precision, &floatret, &size);
	printf("return:%d, size: %zu\n", status, size);
	printf(" Our Float:\t|%.*s|%n\n", (int)size, floatret, &ruler);
	printf(" Norm Float:\t|%+.*Lf|%n\n", precision, input, &lenhold);
	printf("\n");
	free(floatret);
}

void		longdouble_analyse(long double input)
{
	t_float			num;
	size_t			index;
	size_t			subdex;
	unsigned short	mexponent;

	num.ld = input;
	index = 5;
	mexponent = num.byte[4] & 0x7FFF;
	printf("\033[0;34mStarting Float analysis...\033[0;00m\n");
	printf("┌Sign Bit\n");
	printf("|┌Exponent...  ┐ ┌'Integer' bit\n");
	printf("||             | |┌Mantissa...%56s\n", "┐");
	while (index > 0)
	{
		index--;
		subdex = 16;
		while (subdex > 0)
		{
			subdex--;
			if (((num.byte[index] >> subdex) & 1) == 1)
				write(1, "1", 1);
			else
				write(1, "0", 1);
		}
		write(1, " ", 1);
	}
	put_annotation(mexponent, input);
}

int			main(void)
{
	long double		num;

	printf("%zu\n", sizeof(char *));
	printf("sizeof t_float %zu\n", sizeof(t_float));
	printf("sizeof long double %zu\n", sizeof(long double));
	printf("sizeof t_mathlst %zu\n", sizeof(t_numlst));

	// num = -1.0;
	// longdouble_analyse(num);
	// num = 1.0;
	// longdouble_analyse(num);
	// num = 0.5;
	// longdouble_analyse(num);
	// num = -0.5;
	// longdouble_analyse(num);

	// num = 1.75;
	// longdouble_analyse(num);

	num = LDBL_MAX;
	longdouble_analyse(num);
	num = LDBL_MIN;
	longdouble_analyse(num);

	// num = 1.5;
	// longdouble_analyse(num);

	num = 0.0;
	longdouble_analyse(num);
	num = -8.0;
	longdouble_analyse(num);
	num = 0.0 / 0.0;
	longdouble_analyse(num);
	num = 1.0 / 0.0;
	longdouble_analyse(num);
	// num = -1.0 / 0.0;
	// longdouble_analyse(num);

	num = 2.99;
	longdouble_analyse(num);

	// num = 256.0;
	// longdouble_analyse(num);

	// num = 0.125;
	// longdouble_analyse(num);

	// t_float	num2;
	// num2.ld = 0.0;
	// num2.byte[4] = 0x0FFE;
	// num2.byte[3] = (1 << 15);
	// longdouble_analyse(num2.ld);

	// num2.ld = 0.0;
	// num2.byte[4] = 0xFFFE;
	// longdouble_analyse(num2.ld);
	
	return (0);
}