Overview
Computes 2^x using a fast polynomial approximation.
Discussion
This module computes 2^x for fractional input values. The input is in Q6.26 and the output is in Q16.16. The module uses a polynomial based approximation to the pow2() function and the result is accurate to within 0.04 dB (when you look at the result on a db20 scale). The maximum error occurs for very small input values. Over most of the usable range the error is within 0.004 dB.
Type Definition
| Code Block |
|---|
typedef struct _ModulePow2Fract32
{
ModuleInstanceDescriptor instance; // Common Audio Weaver module instance structure
} ModulePow2Fract32Class; |
Pins
Input Pins
Name: in
Description: Input signal
...
Sample rate range: Unrestricted
Complex support: Real
Output Pins
Name: out
Description: Output signal
Data type: fract32
MATLAB Usage
File Name: pow2_fract32_module.m
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