format and base 36 numbers
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From: rkk on 14 Apr 2010 21:14 If I want to print a fixed width hex number, I can do the following: (format t "~6,'0X" 1234) to get 0004D2 How do I do this for base 36 numbers? (format t "~36R" 1234) gives YA; I want 0000YA. I guess my question is how do I combine the ~6,'0 and the ~36R directives. Thanks, Rajesh
From: Barry Margolin on 14 Apr 2010 21:22 In article <a2f90d7d-72f0-482a-95f0-e27f19df2d97(a)u34g2000yqu.googlegroups.com>, rkk <rajesh.kommu(a)gmail.com> wrote: > If I want to print a fixed width hex number, I can do the following: > > (format t "~6,'0X" 1234) > > to get 0004D2 > > How do I do this for base 36 numbers? (format t "~36R" 1234) gives YA; > I want 0000YA. I guess my question is how do I combine the ~6,'0 and > the ~36R directives. You do it the same way. ~R is like ~D and ~X, except there's an extra first parameter specifying the radix. So you want ~36,6,'0R. There's even an example of this in the Hyperspec section on ~R, http://www.lispworks.com/documentation/HyperSpec/Body/22_cba.htm. -- Barry Margolin, barmar(a)alum.mit.edu Arlington, MA *** PLEASE post questions in newsgroups, not directly to me *** *** PLEASE don't copy me on replies, I'll read them in the group ***
From: Rob Warnock on 14 Apr 2010 21:30
rkk <rajesh.kommu(a)gmail.com> wrote: +--------------- | If I want to print a fixed width hex number, I can do the following: | | (format t "~6,'0X" 1234) | | to get 0004D2 | | How do I do this for base 36 numbers? (format t "~36R" 1234) gives YA; | I want 0000YA. I guess my question is how do I combine the ~6,'0 and | the ~36R directives. +--------------- Uhhh... Do you have a local copy of the Common Lisp HyperSpec (CLHS)? If not, *GET ONE ASAP*!! http://www.lispworks.com/documentation/HyperSpec/Body/22_cba.htm 22.3.2.1 Tilde R: Radix ~nR prints arg in radix n. The modifier flags and any remaining parameters are used as for the ~D directive. ~D is the same as ~10R. The full form is ~radix,mincol,padchar,commachar,comma-intervalR. ... The ~D directive is described here: http://www.lispworks.com/documentation/HyperSpec/Body/22_cbb.htm 22.3.2.2 Tilde D: Decimal ... Thus the most general form of ~D is ~mincol,padchar,commachar, comma-intervalD. ... Compare the last sentence quoted above from each section. -Rob ----- Rob Warnock <rpw3(a)rpw3.org> 627 26th Avenue <URL:http://rpw3.org/> San Mateo, CA 94403 (650)572-2607 |