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From: Rich Felker <dalias@aerifal.cx>
To: musl@lists.openwall.com
Subject: Re: libm
Date: Fri, 9 Mar 2012 05:22:39 -0500	[thread overview]
Message-ID: <20120309102239.GC184@brightrain.aerifal.cx> (raw)
In-Reply-To: <20120305151710.GG5728@port70.net>

On Mon, Mar 05, 2012 at 04:17:11PM +0100, Szabolcs Nagy wrote:
> * Rich Felker <dalias@aerifal.cx> [2012-03-05 09:04:59 -0500]:
> > On Mon, Mar 05, 2012 at 09:51:35AM +0100, Szabolcs Nagy wrote:
> > Hm? If you need a macro to test whether an argument is an integer or
> > floating point, try this:
> > 
> > #define __IS_FP(x) !!((1?1:(x))/2)
> > 
> 
> oh nice
> (and subtle)

I checked out your latest tgmath.h; it's surprisingly clean and
readable! A couple ideas..

1. __fun could be just fun (macro arguments are free of namespace
issues)

2. You could add something like:
#ifdef __GNUC__
#define __RETCAST(x) (__typeof__((x))
#else
#define __RETCAST(x)
#endif
Then add __RETCAST((x)), __RETCAST((x)+(y)), etc. Some trick will be
needed to make integer types result in a cast to double, though.

Rich


  parent reply	other threads:[~2012-03-09 10:22 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-23 16:41 libm Szabolcs Nagy
2012-01-23 17:07 ` libm Rich Felker
2012-01-23 19:12   ` libm Szabolcs Nagy
2012-01-27 16:02     ` libm Szabolcs Nagy
2012-01-27 19:01       ` libm Pascal Cuoq
2012-01-27 19:34         ` libm Rich Felker
2012-01-29 16:34           ` libm Szabolcs Nagy
2012-02-27 21:02   ` libm Szabolcs Nagy
2012-02-27 22:24     ` libm Rich Felker
2012-03-03 22:57       ` libm Szabolcs Nagy
2012-03-04  6:53         ` libm Rich Felker
2012-03-04 14:50           ` libm Szabolcs Nagy
2012-03-04 18:43             ` libm Rich Felker
2012-03-05  8:51               ` libm Szabolcs Nagy
2012-03-05 14:04                 ` libm Rich Felker
2012-03-05 15:17                   ` libm Szabolcs Nagy
2012-03-05 15:25                     ` libm Rich Felker
2012-03-09 10:22                     ` Rich Felker [this message]
2012-03-09 10:57                       ` libm Szabolcs Nagy
2012-03-09 16:01                         ` libm Rich Felker
2012-03-09 11:09                       ` libm Szabolcs Nagy
2012-03-09 15:56                         ` libm Rich Felker
2012-03-09 17:02                           ` libm Rich Felker
2012-03-10  3:28                             ` libm Rich Felker
2012-03-10 12:45                               ` libm Szabolcs Nagy
2012-03-10 13:12                                 ` libm Rich Felker
2012-03-10 16:38                                   ` libm Szabolcs Nagy
2012-03-05 11:08             ` libm Szabolcs Nagy

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