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ACE_Stats_Value Class Reference

Helper class for ACE_Stats. More...

#include <Stats.h>

List of all members.

Public Methods

 ACE_Stats_Value (const u_int precision)
 Constructor, which requires precision in terms of number of decimal digits. More...

u_int precision (void) const
 Accessor for precision. More...

void whole (const ACE_UINT32)
 Set the whole_ field. More...

ACE_UINT32 whole (void) const
 Accessor for the whole_ field. More...

void fractional (const ACE_UINT32)
 Set the fractional_ field. More...

ACE_UINT32 fractional (void) const
 Accessor for the fractional_ field. More...

ACE_UINT32 fractional_field (void) const
 Calculates the maximum value of the fractional portion, given its precision. More...

void scaled_value (ACE_UINT64 &) const
 Access the value as an _unsigned_ 64 bit quantity. More...

void dump (void) const
 Print to stdout. More...


Private Methods

 ACE_Stats_Value (void)

Private Attributes

ACE_UINT32 whole_
 The integer portion of the value. More...

ACE_UINT32 fractional_
 The fractional portion of the value. More...

u_int precision_
 The number of decimal digits of precision represented by <fractional_>. More...


Detailed Description

Helper class for ACE_Stats.

Container struct for 64-bit signed quantity and its precision. It would be nicer to use a fixed-point class, but this is sufficient. Users typically don't need to use this class directly; see ACE_Stats below.


Constructor & Destructor Documentation

ACE_INLINE ACE_Stats_Value::ACE_Stats_Value const u_int    precision
 

Constructor, which requires precision in terms of number of decimal digits.

The more variation in the data, and the greater the data values, the smaller the precision must be to avoid overflow in the standard deviation calculation. 3 might be a good value, or maybe 4. 5 will probably be too large for non-trivial data sets.

ACE_Stats_Value::ACE_Stats_Value void    [private]
 


Member Function Documentation

ACE_INLINE void ACE_Stats_Value::dump void    const
 

Print to stdout.

ACE_INLINE ACE_UINT32 ACE_Stats_Value::fractional void    const
 

Accessor for the fractional_ field.

ACE_INLINE void ACE_Stats_Value::fractional const ACE_UINT32    value
 

Set the fractional_ field.

ACE_UINT32 ACE_Stats_Value::fractional_field void    const
 

Calculates the maximum value of the fractional portion, given its precision.

ACE_INLINE u_int ACE_Stats_Value::precision void    const
 

Accessor for precision.

ACE_INLINE void ACE_Stats_Value::scaled_value ACE_UINT64   sv const
 

Access the value as an _unsigned_ 64 bit quantity.

It scales the value up by <precision> decimal digits, so that no precision will be lost. It assumes that <whole_> is >= 0.

ACE_INLINE ACE_UINT32 ACE_Stats_Value::whole void    const
 

Accessor for the whole_ field.

ACE_INLINE void ACE_Stats_Value::whole const ACE_UINT32    value
 

Set the whole_ field.


Member Data Documentation

ACE_UINT32 ACE_Stats_Value::fractional_ [private]
 

The fractional portion of the value.

u_int ACE_Stats_Value::precision_ [private]
 

The number of decimal digits of precision represented by <fractional_>.

Not declared const, so the only way to change it is via the assignment operator.

ACE_UINT32 ACE_Stats_Value::whole_ [private]
 

The integer portion of the value.


The documentation for this class was generated from the following files:
Generated on Thu May 23 00:22:55 2002 for ACE by doxygen1.2.13.1 written by Dimitri van Heesch, © 1997-2001