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Rebol Programming/modulo
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USAGE:
MODULO a b
DESCRIPTION:
Wrapper for MOD that handles errors like REMAINDER. Negligible
values (compared to A and B) are rounded to zero.
MODULO is a function value.
ARGUMENTS:
a -- (Type: number money time)
b -- Absolute value will be used (Type: number money time)
(SPECIAL ATTRIBUTES)
catch
SOURCE CODE
modulo: func [
{Wrapper for MOD that handles errors like REMAINDER. Negligible
^-^-values (compared to A and B) are rounded to zero.}
[catch]
a [number! money! time!]
b [number! money! time!] "Absolute value will be used"
/local r
][
throw-on-error [
any [number? a b: make a b]
r: mod a abs b
either any [a - r = a r + b = b] [make r 0] [r]
]
]