Gets the image gamma

# Gmagick::getimagegamma

(PECL gmagick >= Unknown)

Gmagick::getimagegamma — Gets the image gamma

### Description

public Gmagick::getimagegamma(): float

Gets the image gamma

### Parameters

This function has no parameters.

### Return Values

Returns the image gamma on success

### Errors/Exceptions

Throws an GmagickException on error.

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