source/FPEqual.h File Reference

This file contains declaration and implementation of functions that check floating point numbers for equalty. More...

#include <stdlib.h>
#include "Platform.h"

Namespaces
namespace	Common
Defines
#define	FLOAT_AS_INT(x)   ( ( *(int*)&( x ) ) )
	This macro interprets float as int for easier bitwies access.
#define	DOUBLE_AS_LONGLONG(x)   ( ( *(long long*)&( x ) ) )
	This macro interprets double as long long for easier bitwies access.
#define	FLOAT_SIGN   0x80000000UL
	Extracts sign from single precision floating point number.
#define	DOUBLE_SIGN   0x8000000000000000ULL
	Extracts sign from double precision floating point number.
Functions
bool GAL_API	Common::FloatsEqual (float x, float y, int ulpTolerance=10)
	This method compares two single precision floating point numbers for equality with defined level of tolerance.
bool GAL_API	Common::DoublesEqual (double x, double y, int ulpTolerance=10)
	This method compares two double precision floating point numbers for equality with defined level of tolerance.

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Detailed Description

This file contains declaration and implementation of functions that check floating point numbers for equalty.

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Define Documentation

#define DOUBLE_AS_LONGLONG

(

x

)

( ( *(long long*)&( x ) ) )

This macro interprets double as long long for easier bitwies access.

#define DOUBLE_SIGN   0x8000000000000000ULL

Extracts sign from double precision floating point number.

#define FLOAT_AS_INT

(

x

)

( ( *(int*)&( x ) ) )

This macro interprets float as int for easier bitwies access.

#define FLOAT_SIGN   0x80000000UL

Extracts sign from single precision floating point number.