Compiled symbolic expressions used internally via parameters and element workspaces.

This sub-module only exposes C code so can only be used by other Cython extensions. The symbolic expression struct cy_expr is used in workspaces (see ElementWorkspace) and parameter code (see Parameter) for quick evaluation of changing symbolic expressions.

The cy_expr struct, and associated functions, are wrappers around the C based math parsing and evaluation engine, tinyexpr.