From 02653ab40d93fb7e6d07edb747fe0e07c5d60c74 Mon Sep 17 00:00:00 2001
From: thing1 <thing1@seacrossedlovers.xyz>
Date: Thu, 30 Jan 2025 12:49:01 +0000
Subject: did many new things

---
 comp/work/42/rpn/stack.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 comp/work/42/rpn/stack.c

(limited to 'comp/work/42/rpn/stack.c')

diff --git a/comp/work/42/rpn/stack.c b/comp/work/42/rpn/stack.c
new file mode 100644
index 0000000..0311404
--- /dev/null
+++ b/comp/work/42/rpn/stack.c
@@ -0,0 +1,35 @@
+#include <stddef.h>
+#include <stdlib.h>
+
+typedef struct stack {
+	int *sp;
+	int value;
+	int *stack;
+} stack;
+
+int pop(stack *stack){
+	stack->sp -= sizeof(int);
+	int i = *stack->sp;
+	*stack->sp = stack->value;
+	return i;
+}
+
+void push(stack *stack, int value){
+	*stack->sp = value;
+	stack->sp += sizeof(int);
+}
+
+void deinitstack(stack *stack){
+	free(stack->stack);
+	free(stack);
+	stack = NULL;
+}
+
+stack *initstack(int value, size_t size){
+	stack *s = malloc(sizeof(stack));
+	s->stack = calloc(0, size*sizeof(int));
+	s->sp = s->stack;
+	s->value = value;
+	return s;
+}
+
-- 
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