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Date:	Mon, 23 Mar 2009 20:19:29 +0000
Message-ID:	<416096c60903231319t644a76bfid3f4ecf8badbde21@mail.gmail.com>
Subject:	Re: strtold, isnormal
From:	Andy Koppe <andy DOT koppe AT gmail DOT com>
To:	cygwin AT cygwin DOT com
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>> Oh, btw., the isnormal macro exists in math.h.
>
> Thanks. =A0But for some reason it's not getting picked up:
>
> gcc -c -I. -I/usr/local/include -I/home/reynolds-gregg/include
> -I/usr/local/include -DNDEBUG -D_GNU_SOURCE=3D1 -D_REENTRANT
> -D__EXTENSIONS__ -D_TC_PREFIX=3D"\"/usr/local\""
> -D_TC_INCLUDEDIR=3D"\"/usr/local/include\""
> -D_TC_LIBDIR=3D"\"/usr/local/lib\"" -D_TC_BINDIR=3D"\"/usr/local/bin\""
> -D_TC_LIBEXECDIR=3D"\"/usr/local/libexec\""
> -D_TC_APPINC=3D"\"-I/usr/local/include\""
> -D_TC_APPLIBS=3D"\"-L/usr/local/lib -ltokyocabinet -lbz2 -lz -lpthread
> -lm -lc \"" -I/usr/include -std=3Dc99 -Wall -fPIC -fsigned-char -O2
> tcutil.c
>
> result:
>
> tcutil.c:4948: warning: implicit declaration of function `isnormal'

isnormal() and a load of other things are guarded by
'#if !defined(__STRICT_ANSI__)' in math.h, and __STRICT_ANSI__ does
get defined for -std=3Dc99.

It's definitely in the C99 standard though, so either the header is
wrong or __STRICT_ANSI__ shouldn't be defined.

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