about summary refs log tree commit diff
path: root/converter/other/pamtosvg/epsilon.h
blob: c8e7c8bc75be4aa06bc34e609b935a15379471ea (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
/* epsilon-equal.h: define an error resist compare. */

#ifndef EPSILON_H
#define EPSILON_H

#include "pm_c_util.h"

/* Says whether V1 and V2 are within REAL_EPSILON of each other.
   Fixed-point arithmetic would be better, to guarantee machine
   independence, but it's so much more painful to work with.  The value
   here is smaller than can be represented in either a `fix_word' or a
   `scaled_num', so more precision than this will be lost when we
   output, anyway.  */
bool epsilon_equal(float const v1,
                   float const v2);

#define REAL_EPSILON 0.00001

#endif