nearly_zero.h File Reference

PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University. More...

#include "dtoolbase.h"

Go to the source code of this file.

Macros
#define	IS_NEARLY_EQUAL(value1, value2)   (IS_THRESHOLD_EQUAL(value1, value2, get_nearly_zero_value(value1)))
#define	IS_NEARLY_ZERO(value)   (IS_THRESHOLD_ZERO(value, get_nearly_zero_value(value)))
#define	IS_THRESHOLD_COMPEQ(value1, value2, threshold)   (cfloor(value1 / threshold + 0.5f) == cfloor(value2 / threshold + 0.5f))
#define	IS_THRESHOLD_EQUAL(value1, value2, threshold)   (IS_THRESHOLD_ZERO((value1) - (value2), threshold))
#define	IS_THRESHOLD_ZERO(value, threshold)   ((value) < (threshold) && (value) > -(threshold))
#define	MAYBE_ZERO(value)   (IS_NEARLY_ZERO(value) ? 0 : (value))
#define	NEARLY_ZERO(FLOATTYPE)   (get_nearly_zero_value((FLOATTYPE)0))

Functions
constexpr double	get_nearly_zero_value (double)
constexpr float	get_nearly_zero_value (float)
constexpr int	get_nearly_zero_value (int)

Detailed Description

PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.

All rights reserved.

All use of this software is subject to the terms of the revised BSD license. You should have received a copy of this license along with this source code in a file named "LICENSE."

Author

drose

Date

2000-03-08

Definition in file nearly_zero.h.