JCL Help:MineDoubleBuffer

 JCL Help: MineDoubleBuffer Function

MathRoutines.Floatsupport

JEDI Code Library Help

• Packages
  • RTL enhancements
  • Containers
  • Developer Tools
  • VCL enhancements
• Files
  • Classes
  • Interfaces
  • Functions
  • Variables
  • Constants
  • Types
  • Records
• Project summary
• License

Search in JCL Help

 

Search in all projects

 

Summary

MineDoubleBuffer fills the buffer with consecutive tagged signaling NaNs.

Pascal

 procedure MineDoubleBuffer(var Buffer; Count: Integer; StartTag: TNaNTag = 0);

Parameters

Parameters	Description
var Buffer	The buffer to initialize with SNaN values.
Count: Integer	The number of array elements.
StartTag: TNaNTag = 0	The integer value assigned to the first array element. The tag is increased with each subsequent array element.

Description

MineDoubleBuffer fills the buffer with consecutive tagged signaling NaNs. This allows for real number arrays which enforce initialization: any attempt to load an uninitialized array element into the FPU will raise an exception either of class EJclNaNSignal (Windows NT) or EInvalidOp (else). Under Windows NT thus the violating array index can be derived from the EJclNaNSignal object's Tag property.

See Also

TNaNTag GetNaNTag MineSingleBuffer MakeSignalingNaN

About

Unit

JclMath

Donator

Robert Rossmair

Contribute to this help topic

This documentation wiki is based on the collaborative effort of Project JEDI users. Your edits are welcome in order to improve documentation quality: edit this page

The JEDI Code Library source code is hosted at : link to view the current source code, link to the subversion repository