Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!nosc!ucsd!rutgers!mit-eddie!uw-beaver!ubc-cs!alberta!simon
From: simon@alberta.UUCP (Simon Tortike)
Newsgroups: comp.sys.mac.programmer
Subject: Re: LSC malloc returning garbage?
Summary: double strtod(const char *s, char **endp)
	 What should I use?
Message-ID: <1585@pembina.UUCP>
Date: 12 Sep 88 02:46:48 GMT
Organization: U. of Alberta, Edmonton, AB
Lines: 16

I am writing an application that requires me to change a string into a
float or double number.  The input is already partly filtered (a filterproc
in a modal dialog) but I still need to check the exponentiation, etc.
K&R (2nd. ed) document `double strtod(const char *s, char **endp)' as part
of the header file <stdlib.h>, which returns information in *endp whether
the entire string was converted.  In my case, I wish to reject the number
if this is so.  `atof(s)' only returns the converted number up to the first
invalid character, with no info. about the conversion.
However, `strtod' is undocumented in my versions of LSC (2.15) (3.0 upgrade
on order for over two months ago: I'd buy it from MacWarehouse now but
Symantec have our cheque) and MPW C (v2.0.2).  Could someone suggest what
else I could try short of writing a scanning routine of my own?
(Meanwhile, I suppose I shall!)
-------------------
Simon Tortike, Department of Mining, Metallurgical and Petroleum Engineering,
The University of Alberta, Edmonton, AB, CANADA T6G 2G6.
simon@alberta.uucp | AGT: 403/432-3338 | stortike@ualtavm.bitnet