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ft_dlstpush.c
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ft_dlstpush.c
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/* ************************************************************************** */
/* */
/* :::::::: */
/* ft_dlstpush.c :+: :+: */
/* +:+ */
/* By: jaberkro <[email protected]> +#+ */
/* +#+ */
/* Created: 2022/02/24 20:50:56 by jaberkro #+# #+# */
/* Updated: 2022/04/14 12:27:46 by jaberkro ######## odam.nl */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_dlstpush(t_dlist **dlst1, t_dlist **dlst2)
{
t_dlist *tmp;
tmp = (*dlst2)->next;
if (!*dlst1 && !*dlst2)
return (0);
else if (!*dlst1)
{
*dlst1 = ft_dlstnew((*dlst2)->val);
if (!*dlst1)
return (0);
(*dlst1)->next = NULL;
tmp->previous = NULL;
free(*dlst2);
*dlst2 = tmp;
return (1);
}
(*dlst1)->previous = *dlst2;
(*dlst1)->previous->next = *dlst1;
if (tmp)
tmp->previous = NULL;
(*dlst1)->previous->previous = NULL;
*dlst1 = (*dlst1)->previous;
*dlst2 = tmp;
return (1);
}
/* Push one element to the top of dlst1 from the top of dlst2. */