1  /* ************************************************************************** */
 2  /*                                                                            */
 3  /*                                                        :::      ::::::::   */
 4  /*   vunit.c                                            :+:      :+:    :+:   */
 5  /*                                                    +:+ +:+         +:+     */
 6  /*   By: gychoi <gychoi@student.42seoul.kr>         +#+  +:+       +#+        */
 7  /*                                                +#+#+#+#+#+   +#+           */
 8  /*   Created: 2023/05/11 20:54:17 by gychoi            #+#    #+#             */
 9  /*   Updated: 2023/05/11 21:00:33 by gychoi           ###   ########.fr       */
10  /*                                                                            */
11  /* ************************************************************************** */
12  
13  #include "libvec.h"
14  
15  t_vec3	vunit(t_vec3 ret)
16  {
17  	double	len;
18  
19  	len = vlen(ret);
20  	if (len == 0)
21  		write(2, "warning: division by zero\n", 26);
22  	ret.x /= len;
23  	ret.y /= len;
24  	ret.z /= len;
25  	return (ret);
26  }