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ft_dlstswap.c
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ft_dlstswap.c
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/* ************************************************************************** */
/* */
/* :::::::: */
/* ft_dlstswap.c :+: :+: */
/* +:+ */
/* By: jaberkro <[email protected]> +#+ */
/* +#+ */
/* Created: 2022/02/24 20:32:05 by jaberkro #+# #+# */
/* Updated: 2022/04/14 12:28:56 by jaberkro ######## odam.nl */
/* */
/* ************************************************************************** */
#include "libft.h"
void ft_dlstswap(t_dlist **dlst)
{
t_dlist *tmp;
tmp = (*dlst)->next;
if ((*dlst)->val && tmp->val)
{
(*dlst)->next = tmp->next;
if ((*dlst)->next != NULL)
(*dlst)->next->previous = *dlst;
(*dlst)->previous = tmp;
(*dlst)->previous->next = *dlst;
*dlst = tmp;
}
}
/* Swap two upper elements of a doubly linked list */