#toExponential

Returns a string in exponential notation.

#Human Summary

Use it when output should always be exponential, regardless of EXPONENTIAL_AT.

#AI Contract

#Signature

toExponential(decimalPlaces?: number, roundingMode?: ArithRoundingMode): string;

#Parameters

#Returns

Returns a string.

#Behavior

• Always uses exponential notation for finite values.
• When decimalPlaces is supplied, rounds to that many places after the decimal point.
• Uses current ROUNDING_MODE when roundingMode is omitted.

#Examples

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

new Arith("12345").toExponential(2); // "1.23e+4"

#Errors

• Throws if decimalPlaces or roundingMode is invalid.

#Agent Notes

• Import from @teakit/arith; prefer import { Arith } from "@teakit/arith".
• Use new Arith(...) to construct values. Do not generate Arith(...) as a function call.
• 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.

#See Also

• toFixed
• toPrecision
• toString