From: Richard Henderson <rth@twiddle.net>
To: Chen Gang <chengang@emindsoft.com.cn>,
Peter Maydell <peter.maydell@linaro.org>,
Chris Metcalf <cmetcalf@ezchip.com>
Cc: chenwei@emindsoft.com.cn, qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH v3 2/4] target-tilegx: Add single floating point implementation
Date: Thu, 10 Dec 2015 12:18:36 -0800 [thread overview]
Message-ID: <5669DE1C.7040300@twiddle.net> (raw)
In-Reply-To: <5669B333.1080405@twiddle.net>
On 12/10/2015 09:15 AM, Richard Henderson wrote:
> d = (uint64_t)sign << 63;
> d = deposit64(d, 53, 11, exp);
> d = deposit64(d, 21, 32, man);
> return float64_to_float32(d, fp_status);
Hmm. Actually, this incorrectly adds the implicit bit. We'd actually need to
steal portions of softfloat.c to do this properly. Which still isn't that
difficult.
r~
next prev parent reply other threads:[~2015-12-10 20:18 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <56698865.8050901@emindsoft.com.cn>
2015-12-10 14:13 ` [Qemu-devel] [PATCH v3 1/4] target-tilegx: Add floating point shared functions Chen Gang
2015-12-10 14:15 ` [Qemu-devel] [PATCH v3 2/4] target-tilegx: Add single floating point implementation Chen Gang
2015-12-10 17:15 ` Richard Henderson
2015-12-10 20:18 ` Richard Henderson [this message]
2015-12-10 22:15 ` Chen Gang
2015-12-22 22:29 ` Chen Gang
2015-12-10 22:14 ` Chen Gang
2015-12-20 15:30 ` Chen Gang
2015-12-21 15:01 ` Richard Henderson
2015-12-21 18:54 ` Chen Gang
2015-12-22 2:00 ` Richard Henderson
2015-12-10 14:15 ` [Qemu-devel] [PATCH v3 3/4] target-tilegx: Add double " Chen Gang
2015-12-10 21:17 ` Richard Henderson
2015-12-11 23:38 ` Chen Gang
2015-12-12 0:41 ` Richard Henderson
2015-12-12 2:45 ` Chen Gang
2015-12-10 14:16 ` [Qemu-devel] [PATCH v3 4/4] target-tilegx: Integrate floating pointer implementation Chen Gang
2015-12-10 21:37 ` Richard Henderson
2015-12-10 21:44 ` Chen Gang
2015-12-10 14:26 ` [Qemu-devel] [PATCH v3 0/4] target-tilegx: Implement floating point instructions Chen Gang
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