robertl@killer.UUCP (Robert Lord) (07/31/87)
First off I want to thank all of those who answered my question on long numbers
and how to change strings to integers. I have got the long numbers working
fine, except now I need some help with atol().
data.sqle is defined in my structure (an include file) as type 'long int'.
data.sqft is a string consisting of some numeral value (yes, with quotes
and starting at [0] :-). Now why does the command:
data.sqle = atol(data.sqft);
go crazy when I give it anything larger than 32000 (by 'going crazy' I mean
giving the usual wierd numbers that have no connection with the origional
one at all)? Please tell me this is not a bug with TC.....
Thanks,
Robert Lord
..!ihnp4!killergnu@hoptoad.uucp (John Gilmore) (08/03/87)
robertl@killer.UUCP (Robert Lord) wrote: > data.sqle is defined in my structure (an include file) as type 'long int'. > data.sqft is a string consisting of some numeral value (yes, with quotes > and starting at [0] :-). Now why does the command: > > data.sqle = atol(data.sqft); > > go crazy when I give it anything larger than 32000 (by 'going crazy' I mean > giving the usual wierd numbers that have no connection with the origional > one at all)? Let me guess. Did you declare: long atol(); somewhere in your source file? Without this, the compiler does not know that atol() is returning a 32-bit result, if your ints are 16 bits. I recommend running "lint" on your programs, it will catch things like this without your having to debug it. -- {dasys1,ncoast,well,sun,ihnp4}!hoptoad!gnu gnu@postgres.berkeley.edu Alt.all: the alternative radio of the Usenet.
jgy@hropus.UUCP (John Young) (08/06/87)
Posting-Front-End: GNU Emacs 18.47.1 of Tue Jul 7 1987 on opus (usg-unix-v) Did you define atol as being a function returning a long ?? The default is an int which may be 16 bits on your machine