cmath.h File Reference

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

#include "dtoolbase.h"
#include <cmath>
#include <cfloat>
#include <limits>
#include "cmath.I"

Go to the source code of this file.

Functions
float	cabs (float v)
double	cabs (double v)
float	cacos (float v)
double	cacos (double v)
float	casin (float v)
double	casin (double v)
float	catan (float v)
double	catan (double v)
float	catan2 (float y, float x)
double	catan2 (double y, double x)
double	cceil (double f)
float	ccos (float v)
double	ccos (double v)
double	cfloor (double f)
double	cfrac (double f)
	Returns the fractional component of f: f - cfloor(f). More...
bool	cinf (float v)
bool	cinf (double v)
float	cmod (float x, float y)
	This is similar to fmod(), but it behaves properly when x is negative: that is, it always returns a value in the range [0, y), assuming y is positive. More...
double	cmod (double x, double y)
	This is similar to fmod(), but it behaves properly when x is negative: that is, it always returns a value in the range [0, y), assuming y is positive. More...
int	cmod (int x, int y)
	This is similar to fmod(), but it behaves properly when x is negative: that is, it always returns a value in the range [0, y), assuming y is positive. More...
bool	cnan (float v)
bool	cnan (double v)
float	cpow (float x, float y)
double	cpow (double x, double y)
int	cpow (int x, int y)
float	csin (float v)
double	csin (double v)
float	csin_over_x (float v)
	Computes sin(x) / x, well-behaved as x approaches 0. More...
void	csincos (float v, float *sin_result, float *cos_result)
void	csincos (double v, double *sin_result, double *cos_result)
float	csqrt (float v)
double	csqrt (double v)
float	ctan (float v)
double	ctan (double v)
float	make_inf (float)
double	make_inf (double)
float	make_nan (float)
double	make_nan (double)

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

2000-05-19

Definition in file cmath.h.

Function Documentation

cfrac()

double cfrac ( double  f )

inline

Returns the fractional component of f: f - cfloor(f).

Definition at line 183 of file cmath.I.

cmod() [1/3]

float cmod ( float  x, float  y  )

inline

This is similar to fmod(), but it behaves properly when x is negative: that is, it always returns a value in the range [0, y), assuming y is positive.

Definition at line 130 of file cmath.I.

cmod() [2/3]

double cmod ( double  x, double  y  )

inline

This is similar to fmod(), but it behaves properly when x is negative: that is, it always returns a value in the range [0, y), assuming y is positive.

Definition at line 297 of file cmath.I.

cmod() [3/3]

int cmod ( int  x, int  y  )

inline

This is similar to fmod(), but it behaves properly when x is negative: that is, it always returns a value in the range [0, y), assuming y is positive.

This integer-valued function is provided since the built-in modulo operator % does not work properly for negative x.

Definition at line 434 of file cmath.I.

csin_over_x()

float csin_over_x ( float  v )

inline

Computes sin(x) / x, well-behaved as x approaches 0.

Definition at line 77 of file cmath.I.