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Re: asserting the equality of double values

From: Kamaraju S Kusumanchi
Subject: Re: asserting the equality of double values
Date: Mon, 17 Sep 2007 22:45:46 -0400
User-agent: KNode/0.10.5

Stephen Compall wrote:

> On Sat, 2007-09-15 at 13:53 -0400, Kamaraju S Kusumanchi wrote:
>> 2) The above code uses DBL_MANT_DIG macro. How can I easily find out
>> where this macro is defined? Is there any book or reference which discuss
>> this kind of macros. For now I did a grep in /usr/include and found that
>> such a macro is defined in /usr/include/c++/4.2/limits file. This brings
>> up another question.
>> If you are using a macro defined in a standard c++ library header,
>> shouldn't the file be named test-round.cpp instead of test-round.c?
> The GNU C Library Reference Manual is a great reference for the standard
> C library.  According to its text, the macro is defined to be included
> by float.h.  For details, see Info node (libc)Floating Point Parameters.

Yes, It is indeed part of float.h. Thank you.


Kamaraju S Kusumanchi

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