Function elements are elements that manipulate and transform information or material. At any point in time in a simulation, the outputs of these elements are computed based on the current values of their inputs.
| Element | Default Symbol | Browser Icon | Function |
| Expression |
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Defines mathematical or logical expressions. |
| Script |
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Allows you to create your own custom element using a simple procedural language. |
| Previous Value |
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Returns the value of its input from the previous model update. |
| Extrema |
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Computes the highest (peak) or lowest (valley) value achieved by its input. |
| Selector |
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Defines expressions with nested if...then logic. |
| Splitter |
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Splits an incoming signal into multiple outputs based on specified fractions. |
| Allocator |
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Allocates an incoming signal into multiple outputs given specified demands and priorities. |
| Controller |
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Simulates feedback control systems in which a process variable is adjusted towards a target. |
| Sum |
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Facilitates the addition of multiple values. |
| Convolution |
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Solves a convolution integral. |
| Logic Tree |
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Allows complex logic to be defined in terms of a logic tree consisting of various gate nodes (e.g., AND, OR) and conditions. |
| And |
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Combines multiple conditions using logical AND. |
| Or |
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Combines multiple conditions using logical OR. |
| Not |
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Logical NOT. |
A special category of function elements can be used to link GoldSim to external applications:
| Element | Default Symbol | Browser Icon | Function |
| External (DLL) |
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Dynamically links to a user-specified external function (compiled as a DLL). |
| Spreadsheet |
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Dynamically links to an Excel spreadsheet. |
| File |
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Dynamically copies a file to a specified directory (for use by External elements). |