Merge branch 'stack_functions'

stack_utils/stack_add.c

@@ -0,0 +1,54 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   stack_add.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dgaillet <dgaillet@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/12/08 15:52:40 by dgaillet          #+#    #+#             */
+/*   Updated: 2025/12/08 16:03:54 by dgaillet         ###   ########lyon.fr   */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "push_swap.h"
+#include <stdlib.h>
+
+t_stack	*new_stack(int value)
+{
+	t_stack	*new;
+
+	new = malloc(sizeof(t_stack));
+	if (!new)
+		return (NULL);
+	new->value = value;
+	new->next = NULL;
+	new->previous = NULL;
+	return (new);
+}
+
+void	stack_add_back(t_stack **stack, t_stack *new)
+{
+	if (!stack || !new)
+		return ;
+	if (!(*stack))
+	{
+		(*stack) = new;
+		new->next = new;
+		new->previous = new;
+	}
+	else
+	{
+		(*stack)->previous->next = new;
+		new->previous = *(stack)->previous;
+		(*stack)->previous = new;
+		new->next = *stack;
+	}
+}
+
+void	stack_add_front(t_stack **stack, t_stack *new)
+{
+	if (!stack || *new)
+		return ;
+	stack_add_back(stack, new);
+	*stack = new;
+}

stack_utils/stack_remove.c

@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   stack_remove.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dgaillet <dgaillet@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/12/08 16:05:27 by dgaillet          #+#    #+#             */
+/*   Updated: 2025/12/08 16:15:28 by dgaillet         ###   ########lyon.fr   */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "push_swap.h"
+#include <stdlib.h>
+
+void	stack_clear_all(t_stack *stack, t_stack *first)
+{
+	if (!stack)
+		return ;
+	if (stack->next != first)
+		stack_clear_all(stack->next, first);
+	free(stack);
+}