// Public Domain C Library - http://pdclib.sourceforge.net
// This code is Public Domain. Use, modify, and redistribute at will.
// ----------------------------------------------------------------------------
-// Provides floating point math functions.
+// Mathematics
// ----------------------------------------------------------------------------
#ifndef __MATH_H
#ifndef __cplusplus
-#define signbit( x ) // TODO
-#define fpclassify( x ) // TODO
-#define isfinite( x ) // TODO
-#define isinf( x ) // TODO
-#define isnan( x ) // TODO
-#define isnormal( x ) // TODO
-
#define isgreater( x, y ) // TODO
#define isgreaterequal( x, y ) // TODO
#define isless( x, y ) // TODO
#define islessequal( x, y ) // TODO
#define islessgreater( x, y ) // TODO
#define isunordered( x, y ) // TODO
+#define fpclassify( x ) // TODO
+#define isfinite( x ) // TODO
+
+#define isinf( x ) // TODO
+#define isnan( x ) // TODO
+#define isnormal( x ) // TODO
+#define signbit( x ) // TODO
#else // __cplusplus
float asin( float x );
long double asin( long double x );
-// These functions return the hyperbolic arcsine of their parameter.
+// These functions compute the arc hyperbolic sine of x.
+// @returns arsinh x.
float asinh( float x );
long double asinh( long double x );
float cosh( float x );
long double cosh( long double x );
-// These functions return the arccosine of their parameter.
+// These functions return the arcsine of their parameter.
float acos( float x );
long double acos( long double x );
long double atanh( long double x );
// TODO
-float atan2( float x, float y );
-long double atan2( long double x, long double y );
+float atan2( float y, float x );
+long double atan2( long double y, long double x );
// These functions return sqrt( x^2 + y^2 ).
float hypot( float x, float y );
// ----------------------------------------------------------------------------
// FUNCTIONS - Standard C
-// These functions return the magnitude of its parameter.
+// These functions return the magnitude of their parameter.
double fabs( double x );
float fabsf( float x );
long double fabsl( long double x );
-// These functions return the sine of its parameter.
+// These functions compute the sine of x (measured in radians).
+// @returns sin x.
double sin( double x );
float sinf( float x );
long double sinl( long double x );
-// These functions return the hyperbolic cosine of its parameter.
+// These functions return the hyperbolic cosine of their parameter.
double sinh( double x );
float sinhf( float x );
long double sinhl( long double x );
-// These functions return the arcsine of its parameter.
+// These functions return the arcsine of their parameter.
double asin( double x );
float asinf( float x );
long double asinl( long double x );
float asinhf( float x );
long double asinhl( long double x );
-// These functions return the cosine of its parameter.
+// These functions compute the cosine of x (measured in radians).
+// @returns cos x.
double cos( double x );
float cosf( float x );
long double cosl( long double x );
-// These functions return the hyperbolic cosine of its parameter.
+// These functions return the hyperbolic cosine of their parameter.
double cosh( double x );
float coshf( float x );
long double coshl( long double x );
-// These functions return the arccosine of its parameter.
+// These functions return the arccosine of their parameter.
double acos( double x );
float acosf( float x );
long double acosl( long double x );
float acoshf( float x );
long double acoshl( long double x );
-// These functions return the tangent of its parameter.
+// These functions return the tangent of x (measured in radians).
+// @returns tan x.
double tan( double x );
float tanf( float x );
long double tanl( long double x );
-// These functions return the hyperbolic tangent of its parameter.
+// These functions return the hyperbolic tangent of their parameter.
double tanh( double x );
float tanhf( float x );
long double tanhl( long double x );
-// These functions return the arctangent of its parameter.
+// These functions compute the principal value of the arc tangent of x.
+// @returns arctan x in the interval [-p/2, +p/2] radians.
double atan( double x );
float atanf( float x );
long double atanl( long double x );
float hypotf( float x, float y );
long double hypotl( long double x, long double y );
-// These functions return its parameter x, raised to the power y.
+// These functions return their parameter x, raised to the power y.
double pow( double x, double y );
float powf( float x, float y );
long double powl( long double x, long double y );
-// These functions return the square root of its parameter.
+// These functions return the square root of their parameter.
double sqrt( double x );
float sqrtf( float x );
long double sqrtl( long double x );
float ldexpf( float x, int exp );
long double ldexpl( long double x, int exp );
-// These functions return the natural logarithm of its parameter.
+// These functions return the natural logarithm of their parameter.
double log( double x );
float logf( float x );
long double logl( long double x );
-// These functions return the logarithm (base 10 ) of its parameter.
+// These functions return the logarithm (base 10 ) of their parameter.
double log10( double x );
float log10f( float x );
long double log10l( long double x );
float ceilf( float x );
long double ceill( long double x );
-// These functions return the largest integer no larger than its parameter.
+// These functions return the largest integer no larger than their parameter.
double floor( double x );
float floorf( float x );
long double floorl( long double x );
projects / pdclib / blobdiff