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Date: Mon, 13 Aug 2018 23:29:05 +0200
From: Houder <houder AT xs4all DOT nl>
To: cygwin AT cygwin DOT com
Subject: Re: [ANNOUNCEMENT] TEST RELEASE: Cygwin 2.11.0-0.1
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On 2018-08-10 14:43, Houder wrote:
> On Fri, 10 Aug 2018 13:42:54, Corinna Vinschen wrote:
> [snip]
> 
>> > Note: the following line must be changed in STC-FENV.c (the STC that was
>> > attached to the bug report -- the last one above).
>> >
>> > from:
>> > const int xxx =3D 0x3d; // FE_ALL_EXCEPT on Linux, i.e. the denormal-...
>> >                         // exception is excluded on Linux
>> >
>> > to:
>> > const int xxx =3D 0x3f; // Cygwin allows the denormal-operand exception;
>> >                         // Linux (Andreas Jaeger) does not.
>> >                         // This exception is not defined by the IEEE 754
>> >                         // standard (Floating-Point Arithmetic)
>> 
>> Shall we change that?  A patch would be nice. ;)
> 
> That is possible ...
> 
> As on Linux, the denormal-operand exception will always be masked after 
> this
> change ... (both in the default env. and in the "nomask" env.)
> 
> Meaning that, after this change, this exception can * no longer * be 
> enabled
> through the API of fenv.h
> 
> Objections? Anyone?
> 
> The modication would require changing:
> 
> winsup/cygwin/fenv.cc (_feinitialise() )
> winsup/cygwin/include/fenv.h (FE_ALL_EXCEPT)

GRRR! The file encoding of fenv.h is "cp1252" because of 2 characters in 
this
line:

      Intel® 64 and IA-32 Architectures Software Developer’s Manuals:

... part of a comment at the beginning of the file.

(the registered trademark sign (u00ae) is encoded as 0xae (cp1252), 
while it
  would be: 0xc2 0xae, in utf-8,
  the right single quotation mark (u2019) is encoded as 0x92 (cp1252), 
but in
  utf-8 it would be: 0xc2 0x80 0x98)

I intend to convert the file encoding of fenv.h to utf-8. Is that a 
"No-No"
or is it allowed? (I assume GIT will notice).

Regards,
Henri

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