what is the rounding of number function in autolisp ???

hi guys

how do you do

in excel we write this function =ceiling (number; 05) for examble

in autolisp what is the same function to do this ??

I.E : if i have a number ( 2.63) ... and i want the cad give it as ( 2.65)

what must i use ??

i assumed i can use (ceiling 2.63 0.05)

but it is bad function

thank you and sorry for my bad english

Rounding Functions in autolisp as presented by Lee Mac.

http://lee-mac.com/round.html

Consider the following function:

;; Round Up  -  Lee Mac
;; Rounds 'n' up to the nearest 'm'

(defun LM:roundup ( n m )
   (cond
       ((equal 0.0 (rem n m) 1e- n)
       ((< n 0) (- n (rem n m)))
       ((+ n (- m (rem n m))))
   )
)

Example of usage:

_$ (LM:roundup 2.61 0.05)
2.65

thank you alot

you are awesome people