# Namespace org.pdfclown.documents.functions

Static, self-contained numerical transformations that represent parameterized classes of functions, including mathematical formulas and sampled representations with arbitrary resolution [PDF:1.6:3.9]. More...

## Classes
class | Function
| Function [PDF:1.6:3.9]. More...
class | Functions
| List of 1-input functions combined in a stitching function [PDF:1.6:3.9.3]. More...
class | Type0Function
| Sampled function using a sequence of sample values to provide an approximation for functions whose domains and ranges are bounded [PDF:1.6:3.9.1]. More...
class | Type2Function
| Exponential interpolation of one input value and
    n
output values [PDF:1.6:3.9.2]. More...
class | Type3Function
| Stitching function producing a single new 1-input function from the combination of the subdomains of several 1-input functions [PDF:1.6:3.9.3]. More...
class | Type4Function
| PostScript calculator function represented as a stream containing code written in a small subset of the PostScript language [PDF:1.6:3.9.4]. More...

##

Static, self-contained numerical transformations that represent parameterized classes of functions, including mathematical formulas and sampled representations with arbitrary resolution [PDF:1.6:3.9].

Functions are used in various ways in PDF, including device-dependent rasterization information for high-quality printing (halftone spot functions and transfer functions), color transform functions for certain color spaces, and specification of colors as a function of position for smooth shadings.

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