HUGE is missing in math.h

Yitzchak Scott-Thoennes sthoenna@efn.org
Mon Jun 27 19:53:00 GMT 2005


On Mon, Jun 27, 2005 at 09:43:19AM +0200, Corinna Vinschen wrote:
> On Jun 26 09:37, Humberto Bortolossi wrote:
> > Hi!
> > 
> > I'm trying to port a C program written originally in
> > Linux to the Microsoft Windows plataform.
> > 
> > I've realized that math.h under cygwin doesn't
> > define the macro HUGE, that is defined in
> > the math.h under linux:
> > 
> > /* Declarations for math functions.
> >    Copyright (C) 1991-1993,1995-1999,2001,2002 Free Software Foundation, Inc.
> >    This file is part of the GNU C Library.
> >  */
> > /* SVID mode specifies returning this large value instead of infinity.  */
> > # define HUGE           3.40282347e+38F
> > 
> > I thought math.h should be quite portable ...
> 
> HUGE is not portable.  It's not defined in the standard, see
> http://www.opengroup.org/onlinepubs/009695399/basedefs/math.h.html
> Use HUGE_VAL instead.

Or maybe he wants MAXFLOAT (largest finite value representable in
smallest size float).

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