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Re: [Qemu-devel] [PATCH] softfloat: float32_to_float16() should do inexa


From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH] softfloat: float32_to_float16() should do inexact instead of underflow for rounding case
Date: Wed, 25 Apr 2012 17:15:34 +0100

On 25 April 2012 17:11, Alexey Starikovskiy <address@hidden> wrote:
> See A2.7.7
> Floating-point exceptions
>
> Inexact. The flag is set to 1 if the result of an operation is not
> equivalent to the value that
> would be produced if the operation were performed with unbounded
> precision and exponent
> range.

You can't justify a patch to the generic IEEE floating point
code with a quotation from the ARM ARM. (And don't quote documents
without saying what document you're quoting!)

Can you provide a test case for an instruction or operation which
generates the wrong results?

-- PMm



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