Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!eos!ptolemy!raymond
From: raymond@ptolemy.arc.nasa.gov (Eric A. Raymond)
Newsgroups: comp.lang.c
Subject: Re: Turbo-C Debugger Oddity
Keywords: Turbo-C Debugger, Floating Point Errors
Message-ID: <985@ptolemy.arc.nasa.gov>
Date: 8 Feb 89 20:04:51 GMT
References: <210@calmasd.Prime.COM>
Reply-To: raymond@ptolemy.UUCP (Eric A. Raymond)
Organization: NASA Ames Research Center, Moffett Field, CA
Lines: 23

In article <210@calmasd.Prime.COM> wlp@calmasd.Prime.COM (Walter L. Peterson, Jr.) writes:
>         Floating Point Error: Domain
>

It seems like you may be passing a float when a double was expected.
One sneaky way for this to occur is if you use new function prototypes
in one source file and old style declarations in another file.

For example:

File A:  extern void foo(float x);

File B:  void foo(x)
           float x;
         { ... }

In File A, foo is defined as you would expect (x is a float).  In file B,
x is promoted to a double.

----
-- 
Eric A. Raymond  (raymond@pluto.arc.nasa.gov)
Nothing left to do but :-) :-) :-)