wes@obie.UUCP (Barnacle Wes) (04/25/88)
In article <11154@mimsy.UUCP>, chris@mimsy.UUCP (Chris Torek) writes:
% It is not difficult[*] to arrange for the linker to pull in a simple
% printf() if the rest of the program does not use floating point, and a
% full-blown floating point printf if it does. Just because Microsoft's
% implementation is poor (in terms of space, at any rate) is no reason to
% castigate printf itself.
%
% -----
% [*]What, never? Well, hardly ever. The trick is to have the linker
% examine the undefined externals for floating-point library references,
% and if present, link with `bigprintf.obj'; otherwise it should use
% `littleprintf.obj'. It is just a Small Matter of Programming.
The Mark Williams C compiler for the Atari ST sort of supports this
idea. The printf library function does not ordinarily include
floating point routines. If you specify the -f flag to the compiler,
the larger version of printf (with floating i/o) will be linked
instead. Not quite as elegant was what Chris proposed, but really
quite functional.
--
/\ - "Against Stupidity, - {backbones}!
/\/\ . /\ - The Gods Themselves - utah-cs!uplherc!
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/ U i n T e c h \ - Schiller - wesdg@lakart.UUCP (David Goodenough) (04/28/88)
From article <11154@mimsy.UUCP> by chris@mimsy.UUCP (Chris Torek): >It is not difficult[*] to arrange for the linker to pull in a simple >printf() if the rest of the program does not use floating point, and a >full-blown floating point printf if it does. I agree, and do the same myself. I have LIB.L which is my usual library, and gets searched whenever I link a program. printf,sprintf,fprintf all reside here, and link in a normal (i.e. integer only) #doprnt which actually does the work. All my FP stuff lives in FLIB.L, which is included in the linkage with a -LF flag (just like UNIX :-). Now FLIB.L ALSO contains printf,sprintf,fprintf, which also reference (and cause linkage of) #doprnt, but the #doprnt in FLIB.L knows about floating point, and so whenever I use printf etc. and link with a -LF, I get the right printf, and #doprnt. LIB.L is also scanned BUT BECAUSE FLIB.L PROVIDED printf, IT IS NO LONGER UNDEFINED, SO IT GETS BYPASSED. Anyone who produces a linker that cannot do what I've just described needs to talk to his analysts (both system and psycho :-) -- dg@lakart.UUCP - David Goodenough +---+ | +-+-+ ....... !harvard!adelie!cfisun!lakart!dg +-+-+ | +---+