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Re: Suffix for __float128 FP constants

From: "H. J. Lu" <hjl at lucon dot org>
To: Steve Ellcey <sje at cup dot hp dot com>
Cc: ubizjak at gmail dot com, joseph at codesourcery dot com, gcc at gcc dot gnu dot org
Date: Mon, 25 Jun 2007 11:28:59 -0700
Subject: Re: Suffix for __float128 FP constants
References: <4676BFF2.6090600@gmail.com> <200706181810.LAA01009@hpsje.cup.hp.com> <20070618210815.GA26463@lucon.org>

On Mon, Jun 18, 2007 at 02:08:15PM -0700, H. J. Lu wrote:
> On Mon, Jun 18, 2007 at 11:10:43AM -0700, Steve Ellcey wrote:
> > > BTW: IA64 has the same issues with two FP types (long double XFmode and 
> > > "longer double" TFmode). How is this solved for IA64?
> > > 
> > > Uros.
> > 
> > This is different on IA64 HP-UX and IA64 Linux.  On HP-UX, 128 bits is
> > the standard long double and 80 bits is __float80.  We use the 'W'
> > suffix for a __float80 constant on HP-UX.  HP-UX also uses a lower case
> > 'w' in math names for functions (e.g.  sqrtw) for __float80 functions.
> > 
> > Since __float128 == long double on HP-UX we can just use 'L' and 'l' for
> > those.
> > 
> 

BTW, icc uses the same suffix for __float128 constant as HP-UX.


H.J.

References:
- Re: Suffix for __float128 FP constants
  - From: Uros Bizjak
- Re: Suffix for __float128 FP constants
  - From: Steve Ellcey
- Re: Suffix for __float128 FP constants
  - From: H. J. Lu

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