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]]
]