#isNegative

Returns whether the receiver has a negative sign.

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

const x = Arith.from("-0");
x.isNegative(); // true
x.valueOf(); // "-0"

Arith.from("2").isNegative(); // false
Arith.from("-Infinity").isNegative(); // true
Arith.from("NaN").isNegative(); // false

#API Reference

#Signature

isNegative(): 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.