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ANSI Common Lisp  12 Numbers 12.2 Dictionary of Numbers
| 12.2.36 mod, rem |
Function |
- Syntax:
-
mod
number divisor
 modulus
rem
number divisor
remainder
- Arguments and Values:
-
number - a real.
divisor - a real.
modulus, remainder - a real.
- Description:
-
mod and rem are generalizations of the modulus
and remainder functions respectively.
mod performs the operation floor
on number and divisor
and returns the remainder of the floor operation.
rem performs the operation truncate
on number and divisor
and returns the remainder of the truncate operation.
mod and rem are
the modulus and remainder functions
when number and divisor are integers.
- Examples:
-
(rem -1 5) -1
(mod -1 5) 4
(mod 13 4) 1
(rem 13 4) 1
(mod -13 4) 3
(rem -13 4) -1
(mod 13 -4) -3
(rem 13 -4) 1
(mod -13 -4) -1
(rem -13 -4) -1
(mod 13.4 1) 0.4
(rem 13.4 1) 0.4
(mod -13.4 1) 0.6
(rem -13.4 1) -0.4
- See Also:
-
floor, truncate
- Notes:
-
The result of mod is either zero or a
real
with the same sign as divisor.
- Allegro CL Implementation Details:
-
None.
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