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List:       gcc-patches
Subject:    Re: [PATCH] libgcc/m68k: Fixes for soft float
From:       Jeff Law <jeffreyalaw () gmail ! com>
Date:       2023-11-10 23:49:48
Message-ID: 9ab8c5e2-806b-4ab2-a4cd-fcce2491e6d9 () gmail ! com
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On 8/22/23 20:15, Keith Packard via Gcc-patches wrote:
> Check for non-zero denorm in __adddf3. Need to check both the upper and
> lower 32-bit chunks of a 64-bit float for a non-zero value when
> checking to see if the value is -0.
> 
> Fix __addsf3 when the sum exponent is exactly 0xff to ensure that
> produces infinity and not nan.
> 
> Handle converting NaN/inf values between formats.
> 
> Handle underflow and overflow when truncating.
> 
> Write a replacement for __fixxfsi so that it does not raise extra
> exceptions during an extra conversion from long double to double.
> 
> Signed-off-by: Keith Packard <keithp@keithp.com>
I pushed this to the trunk after fixing a few minor whitespace nits. 
You didn't mention the divdf change, but I'll assume that was just an 
oversight.

I'm largely trusting your reputation on the fpgnulib changes.  I won't 
claim to know that code at all.  The assembly bits were simple enough 
that I could make out what you were doing relatively easily.

Thanks again,
Jeff
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