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fractional part of a number

4 posts · 3722 views

stackman

#1 Mon Oct 15, 2012 8:35 pm

Hi,
Is there a simple way to return the fractional part of a number in common lisp?
At the moment I am using

(multiple-value-call (lambda (x y)(declare (ignore x)) y) (floor 1.5))

but this seems a bit verbose.

Goheeca

#2 Mon Oct 15, 2012 9:19 pm

Re: fractional part of a number

Have a look at mod & rem.

(mod 1.5 1)

cl-2dsyntax is my attempt to create a Python-like reader. My mirror of CLHS (and the dark themed version). Temporary mirrors of aferomentioned: CLHS and a dark version.

Paul

#3 Mon Oct 15, 2012 9:30 pm

Re: fractional part of a number

stackman wrote:Hi,
Is there a simple way to return the fractional part of a number in common lisp?
At the moment I am using
(multiple-value-call (lambda (x y)(declare (ignore x)) y) (floor 1.5))
but this seems a bit verbose.

FWIW, (nth-value 1 (floor 1.5))

stackman

#4 Thu Oct 18, 2012 8:01 am

Re: fractional part of a number

Thanks for the replies, this is definitely better.