Rebol Programming/sign?
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USAGE:[edit | edit source]
SIGN? number
DESCRIPTION:[edit | edit source]
Returns sign of number as 1, 0, or -1 (to use as multiplier).
SIGN? is a function value.
ARGUMENTS[edit | edit source]
- number -- (Type: number money time)
SOURCE CODE[edit | edit source]
sign?: func [
{Returns sign of number as 1, 0, or -1 (to use as multiplier).}
number [number! money! time!]
][
either positive? number [1] [either negative? number [-1] [0]]
]