pub fn removemathfunc(name: &str)Expand description
Port of removemathfunc() from Src/module.c:1267. — C decl removemathfunc(MathFunc previous, MathFunc current).
Removes the named entry from MATHFUNCS and
drops it (Rust drop subsumes C’s zsfree/zfree ladder).
WARNING: param names don’t match C — Rust=(name) vs C=(previous, current)