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From: Sergey Dmitrouk <sdmitrouk@accesssoftek.com>
To: "musl@lists.openwall.com" <musl@lists.openwall.com>
Subject: Re: [PATCH] Make musl math depend less on libgcc builtins
Date: Thu, 11 Sep 2014 16:22:53 +0300	[thread overview]
Message-ID: <20140911132253.GA5487@zx-spectrum> (raw)
In-Reply-To: <20140911122651.GH21835@port70.net>

> now that you mention i got reports of spurious invalid
> exceptions for nan inputs on arm, but i don't have hardfloat
> arm toolchain
> 
> if you have further info on this that would be helpful
> 
> (from the arm docs it seems to me that vfp sqrt should work
> according to ieee so either that is wrong or our fenv
> exception test is not ok on arm)

Note that I'm performing tests in QEMU.  vsqrt.f64 instruction returns
NAN for NAN input and doesn't raise any exceptions ($fpscr register is
unchanged).  However I get INVALID exception after printing result with
musl implementation of printf(), glibc doesn't raise any exceptions in
printf(), but I'm not sure whether it's important, probably not.


  reply	other threads:[~2014-09-11 13:22 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-11  7:35 Sergey Dmitrouk
2014-09-11  9:47 ` Szabolcs Nagy
2014-09-11 11:42   ` Sergey Dmitrouk
2014-09-11 12:26     ` Szabolcs Nagy
2014-09-11 13:22       ` Sergey Dmitrouk [this message]
2014-09-11 14:11         ` Szabolcs Nagy
2014-09-11 15:04           ` Sergey Dmitrouk
2014-09-11 15:14           ` Alexander Monakov
2014-09-11 15:34             ` Szabolcs Nagy
2014-09-18 14:28           ` Sergey Dmitrouk
2014-09-18 17:55             ` Szabolcs Nagy
2014-09-18 19:21               ` Sergey Dmitrouk

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