Overview

Eliminates NaN and Inf from data

Discussion

This module detects NaN and Inf values in floating-point data and sets them to replacementValue. The module also keeps track of how many of each type of exception is detected. .infCount contains the number of Inf values seen (both positive and negative). .nanCount contains the number of NaN values see.

The module is useful for debugging mathematical errors such as divide by zero.

Type Definition

typedef struct _ModuleMathException
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    INT32 nanCount;                               // Number of NaNs encountered
    INT32 infCount;                               // Number of Infs encountered
    FLOAT32 replacementValue;                     // NaN and Inf values are replaced with this number.
} ModuleMathExceptionClass;

Variables

Properties

Name	Type	Usage	isHidden	Default value	Range	Units
nanCount	int	state	0	0	Unrestricted
infCount	int	state	0	0	Unrestricted
replacementValue	float	parameter	0	0	Unrestricted

Pins

Input Pins

Name: in

Description: audio input

Data type: float

Channel range: Unrestricted

Block size range: Unrestricted

Sample rate range: Unrestricted

Complex support: Real and Complex

Output Pins

Name: out

Description: audio output

Data type: float

MATLAB Usage

File Name: math_exception_module.m

 M=math_exception_module(NAME)
 This module eliminates NaN and Inf's from data and replaces them
 with the parameter replacementValue.  The module also counts how many NaN's and Inf's it
 has replaced.
    NAME - name of the module.