Type Alias ReverseSign<N>

ReverseSign: N extends 0
    ? 0
    : N extends PositiveInfinity
        ? NegativeInfinity
        : N extends NegativeInfinity
            ? PositiveInfinity
            : `${N}` extends `-${infer P extends number}`
                ? P
                : `-${N}` extends `${infer R extends number}` ? R : never

Returns the number with reversed sign.

Type Parameters

N extends number

Example

type A = ReverseSign<-1>;
//=> 1

type B = ReverseSign<1>;
//=> -1

type C = ReverseSign<NegativeInfinity>;
//=> PositiveInfinity

type D = ReverseSign<PositiveInfinity>;
//=> NegativeInfinity

Type Alias ReverseSign<N>

Type Parameters

Example

Settings