Sign? - Function Summary

Summary:

Returns sign of number as 1, 0, or -1 (to use as multiplier).

Usage:

sign? number

Arguments:

number - The number argument. (must be: number money time)

Description:

The SIGN? function returns a positive, zero, or negative integer based on the sign of its argument.

print sign? 1000 1

print sign? 0 0

print sign? -1000 -1

The sign is returned as an integer to allow it to be used as a multiplication term within an expression:

val: -5 new: 2000 * sign? val print new -2000

size: 20 num: -30 if size > 10 [xy: 10x20 * sign? num] print xy -10x-20

Related:

abs - Returns the absolute value.
negate - Changes the sign of a number.