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SYS_Floor.h File Reference
#include "SYS_API.h"
#include <math.h>
#include "SYS_Types.h"
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Go to the source code of this file.

Functions

SYS_API fpreal32 SYSfloor (fpreal32 val)
 
SYS_API fpreal32 SYSceil (fpreal32 val)
 
SYS_API fpreal32 SYSfrac (fpreal32 val)
 
SYS_API fpreal64 SYSfrac (fpreal64 val)
 
fpreal32 SYSfloorIL (fpreal32 val)
 
fpreal64 SYSfloorIL (fpreal64 val)
 
fpreal32 SYSceilIL (fpreal32 val)
 
fpreal64 SYSceilIL (fpreal64 val)
 
fpreal32 SYSfracIL (fpreal32 val)
 
fpreal64 SYSfracIL (fpreal64 val)
 
fpreal32 SYSrint (fpreal32 val)
 
fpreal64 SYSrint (fpreal64 val)
 
SYS_API fpreal64 SYSniceNumber (fpreal64 num, int digits=6)
 

Function Documentation

fpreal32 SYSceilIL ( fpreal32  val)
inline

Definition at line 88 of file SYS_Floor.h.

fpreal64 SYSceilIL ( fpreal64  val)
inline

Definition at line 89 of file SYS_Floor.h.

fpreal32 SYSfloorIL ( fpreal32  val)
inline

Definition at line 59 of file SYS_Floor.h.

fpreal64 SYSfloorIL ( fpreal64  val)
inline

Definition at line 87 of file SYS_Floor.h.

SYS_API fpreal32 SYSfrac ( fpreal32  val)
SYS_API fpreal64 SYSfrac ( fpreal64  val)
fpreal32 SYSfracIL ( fpreal32  val)
inline

Definition at line 139 of file SYS_Floor.h.

fpreal64 SYSfracIL ( fpreal64  val)
inline

Definition at line 157 of file SYS_Floor.h.

SYS_API fpreal64 SYSniceNumber ( fpreal64  num,
int  digits = 6 
)

SYSniceNumber() will limit the precision of decimal digits, but leave the integer portion of a number at full precision. Thus:

SYSniceNumber(1234.56, 2) == 1235; // (note the rounding)
SYSniceNumber(0.0123456, 2) == 0.012;
SYSniceNumber(1.23456e-14,2) == 1.2e-14;

Note that 6 digits is almost enough to represent a single precision float.

fpreal32 SYSrint ( fpreal32  val)
inline
Examples:
COP2/COP2_FullImageFilter.C, and field3d/ROP_Field3D.C.

Definition at line 163 of file SYS_Floor.h.

fpreal64 SYSrint ( fpreal64  val)
inline

Definition at line 169 of file SYS_Floor.h.