#isFinite

Returns whether the receiver is a finite decimal value.

import { Arith } from "@teakit/arith";

Arith.from("1").isFinite(); // true
Arith.from("Infinity").isFinite(); // false
Arith.from("-Infinity").isFinite(); // false
Arith.from("NaN").isFinite(); // false

// Very large finite strings remain finite unless RANGE config overflows them.
Arith.from("1e+1000").isFinite(); // true

#API Reference

#Signature

isFinite(): boolean;

#Parameters

#Returns

Returns a boolean.

#Throws

• Does not take user arguments; no argument validation is performed.

#Agent Contract

#Agent Notes

• Use predicate methods instead of inspecting c, e, or s directly.
• Import with import { Arith } from "@teakit/arith"; default imports are unsupported.
• Use Arith.from(...) to create values. Do not generate new Arith(...) or Arith(...).
• Use string inputs for exact decimal values, especially money-like values.
• Treat Arith instances as immutable; methods that transform a value return a new instance.
• Do not mutate internal fields such as c, e, s, or _isArith.