Panda3D
dtool
src
dtoolbase
cmath.h
Go to the documentation of this file.
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file cmath.h
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* @author drose
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* @date 2000-05-19
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*/
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#ifndef CMATH_H
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#define CMATH_H
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// This file declares a number of C++-style overloading wrappers around the
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// standard math library functions, so we can use overloading to differentiate
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// on type instead of having to know explicitly whether we need to call, for
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// instance, sqrtf() or sqrt().
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#include "
dtoolbase.h
"
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#include <cmath>
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#include <cfloat>
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#include <limits>
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INLINE
float
csqrt(
float
v);
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INLINE
float
csin(
float
v);
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INLINE
float
ccos(
float
v);
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INLINE
float
ctan(
float
v);
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INLINE
void
csincos(
float
v,
float
*sin_result,
float
*cos_result);
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INLINE
float
csin_over_x
(
float
v);
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INLINE
float
cabs(
float
v);
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INLINE
float
catan(
float
v);
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INLINE
float
catan2(
float
y,
float
x);
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INLINE
float
casin(
float
v);
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INLINE
float
cacos(
float
v);
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INLINE
float
cmod
(
float
x,
float
y);
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INLINE
float
cpow(
float
x,
float
y);
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INLINE
double
cfloor(
double
f);
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INLINE
double
cceil(
double
f);
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INLINE
double
cfrac
(
double
f);
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INLINE
double
csqrt(
double
v);
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INLINE
double
csin(
double
v);
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INLINE
double
ccos(
double
v);
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INLINE
double
ctan(
double
v);
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INLINE
void
csincos(
double
v,
double
*sin_result,
double
*cos_result);
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INLINE
double
cabs(
double
v);
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INLINE
double
catan(
double
v);
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INLINE
double
catan2(
double
y,
double
x);
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INLINE
double
casin(
double
v);
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INLINE
double
cacos(
double
v);
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INLINE
double
cmod
(
double
x,
double
y);
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INLINE
double
cpow(
double
x,
double
y);
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INLINE
int
cpow(
int
x,
int
y);
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// Returns true if the number is NaN, false if it's a genuine number or
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// infinity.
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INLINE
bool
cnan(
float
v);
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INLINE
bool
cnan(
double
v);
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// Returns true if the number is infinity.
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INLINE
bool
cinf(
float
v);
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INLINE
bool
cinf(
double
v);
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// Return NaN and infinity, respectively.
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INLINE
float
make_nan(
float
);
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INLINE
double
make_nan(
double
);
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INLINE
float
make_inf(
float
);
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INLINE
double
make_inf(
double
);
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INLINE
int
cmod
(
int
x,
int
y);
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#include "
cmath.I
"
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#endif
csin_over_x
float csin_over_x(float v)
Computes sin(x) / x, well-behaved as x approaches 0.
Definition:
cmath.I:77
cmod
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 v...
Definition:
cmath.I:130
cmath.I
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
cfrac
double cfrac(double f)
Returns the fractional component of f: f - cfloor(f).
Definition:
cmath.I:183
dtoolbase.h
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