/ray/src/lib/numerics/num_math.h File Reference

The math.h analogon of the numerics code. Always include. More...

#include <lib/sconfig.h>
#include <math.h>

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Namespaces
namespace	NUM
Defines
#define	SCFMinit(x)
#define	NUM_OVERLOADED_R(func, cfunc)
#define	NUM_OVERLOADED(func)   NUM_OVERLOADED_R(func,func)
#define	NUM_OVERLOADED2_R(func, cfunc)
#define	NUM_OVERLOADED2(func)   NUM_OVERLOADED2_R(func,func)
#define	IROUND_OVERLOADED(func, itype)

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Detailed Description

The math.h analogon of the numerics code. Always include.

Author:

Wolfgang Wieser ] wwieser (a) gmx <*> de [

This file contains the most basic and essential numerics functions and should always be included at locations where otherwise math.h would have stood. (num_math.h includes math.h itself).

NOTE: Put all your numerics code into the NUM namespace. Otherwise including <num_math.h> will "not help".

This file is meant to collect all the ugly floating point HAVE_XXX handling, etc. Only functions in that file should be used in numerical Calculations; do NOT use <math.h> functions directly. This normally happens automatically if you include num_math.h and put your code into namespace NUM.

Note that this file provides some (potentially) optimized versions of floating-point functionality, such as max(x,y), min(x,y), fabs(x) which are faster as using e.g. (x<0 -x : x). Hence, try to use as much functionality from this file as you can!

Definition in file num_math.h.

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Define Documentation

#define IROUND_OVERLOADED (  func, itype   )

Value: template<> inline itype func<itype,double>(double x) \ { return(NUM::func<int32>(x)); } \ template<> inline itype func<itype,float>(float x) \ { return(NUM::func<int32>(x)); } \ template<> inline itype func<itype,long double>(long double x) \ { return(NUM::func<int32>(x)); } Definition at line 342 of file num_math.h.

#define NUM_OVERLOADED (  func   )     NUM_OVERLOADED_R(func,func)

Definition at line 279 of file num_math.h.

#define NUM_OVERLOADED2 (  func   )     NUM_OVERLOADED2_R(func,func)

Definition at line 286 of file num_math.h.

#define NUM_OVERLOADED2_R (  func, cfunc   )

Value: inline double func(double x,double y) { return(::cfunc(x,y)); } \ inline float func(float x,float y) { return(::cfunc ## f(x,y)); } \ inline long double func(long double x,long double y) \ { return(::cfunc ## l(x,y)); } Definition at line 281 of file num_math.h.

#define NUM_OVERLOADED_R (  func, cfunc   )

Value: inline double func(double x) { return(::cfunc(x)); } \ inline float func(float x) { return(::cfunc ## f(x)); } \ inline long double func(long double x) { return(::cfunc ## l(x)); } Definition at line 275 of file num_math.h.

#define SCFMinit (  x   )

Definition at line 89 of file num_math.h.

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