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op_functions2.c
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op_functions2.c
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#include "monty.h"
/**
* op_add - adds the top two elements of the stack
* @stack: pointer to the pointer to the first element in stack
* @line_number: line number of the instruction
*/
void op_add(stack_t **stack, unsigned int line_number)
{
if (*stack == NULL || (*stack)->next == NULL)
{
fprintf(stderr, "L%u: can't add, stack too short\n", line_number);
free_op();
exit(EXIT_FAILURE);
}
(*stack)->next->n = (*stack)->next->n + (*stack)->n;
op_pop(stack, line_number);
}
/**
* op_nop - does nothing
* @stack: pointer to the pointer to the first element in stack
* @line_number: line number of the instruction
*/
void op_nop(stack_t **stack, unsigned int line_number)
{
(void)stack;
(void)line_number;
}
/**
* op_sub - subtracts the top element of the stack
* from the second top element of the stack
* @stack: pointer to the pointer to the first element in stack
* @line_number: line number of the instruction
*/
void op_sub(stack_t **stack, unsigned int line_number)
{
if (*stack == NULL || (*stack)->next == NULL)
{
fprintf(stderr, "L%u: can't sub, stack too short\n", line_number);
free_op();
exit(EXIT_FAILURE);
}
(*stack)->next->n = (*stack)->next->n - (*stack)->n;
op_pop(stack, line_number);
}
/**
* op_div - divides the second top element of the stack by
* the top element of the stack
* @stack: pointer to the pointer to the first element in stack
* @line_number: line number of the instruction
*/
void op_div(stack_t **stack, unsigned int line_number)
{
if (*stack == NULL || (*stack)->next == NULL)
{
fprintf(stderr, "L%u: can't div, stack too short\n", line_number);
free_op();
exit(EXIT_FAILURE);
}
if ((*stack)->n == 0)
{
fprintf(stderr, "L%u: division by zero\n", line_number);
free_op();
exit(EXIT_FAILURE);
}
(*stack)->next->n = (*stack)->next->n / (*stack)->n;
op_pop(stack, line_number);
}
/**
* op_mul - multiplies the second top element of the stack
* with the top element of the stack
* @stack: pointer to the pointer to the first element in stack
* @line_number: line number of the instruction
*/
void op_mul(stack_t **stack, unsigned int line_number)
{
if (*stack == NULL || (*stack)->next == NULL)
{
fprintf(stderr, "L%u: can't mul, stack too short\n", line_number);
free_op();
exit(EXIT_FAILURE);
}
(*stack)->next->n = (*stack)->next->n * (*stack)->n;
op_pop(stack, line_number);
}