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This commit is contained in:
Jeremy FLEURY
2019-07-17 11:22:24 +02:00
commit 748d10f4f3
174 changed files with 8953 additions and 0 deletions
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62
libft/printf/ft_nd_mul.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_nd_mul.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: igarbuz <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/01/29 20:11:14 by igarbuz #+# #+# */
/* Updated: 2019/01/29 20:11:17 by igarbuz ### ########.fr */
/* */
/* ************************************************************************** */
#include "ft_printf.h"
static void ft_nd_mul2p_main(t_nd *nd, uint32_t *carry, uint32_t *i)
{
uint64_t val;
while (++(*i) <= (uint32_t)nd->hi)
{
val = ((uint64_t)nd->n[*i] << 29) | *carry;
*carry = (uint32_t)(val / 1000000000);
nd->n[*i] = (uint32_t)val - *carry * 1000000000;
}
}
static void ft_nd_mul2p_last(t_nd *nd, uint32_t *carry,
uint32_t *i, uint32_t p)
{
uint64_t val;
while (++(*i) <= (uint32_t)nd->hi)
{
val = ((uint64_t)nd->n[*i] << p) | *carry;
*carry = (uint32_t)(val / 1000000000);
nd->n[*i] = (uint32_t)val - *carry * 1000000000;
}
}
void ft_nd_mul2p(t_nd *nd, uint32_t p, uint32_t carry)
{
uint32_t i;
while (p >= 29)
{
i = -1;
ft_nd_mul2p_main(nd, &carry, &i);
if (carry)
{
nd->n[++(nd->hi)] = carry;
carry = 0;
}
p -= 29;
}
if (p)
{
i = -1;
ft_nd_mul2p_last(nd, &carry, &i, p);
if (carry)
nd->n[++(nd->hi)] = carry;
}
}