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Author SHA1 Message Date
Corinna Vinschen cc19109af9 Cygwin: don't export _feinitialise from newlib 
Use the more official fesetenv(FE_DFL_ENV) from _dll_crt0, thus
allowing to drop the _feinitialise declaration from fenv.h.

Provide a no-op _feinitialise in Cygwin as exportable symbol for really
old applications when _feinitialise was called from mainCRTStartup in
crt0.o.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
 2021-04-13 12:55:34 +02:00
Corinna Vinschen 3b22d72255 fenv: drop Cygwin-specific implementation in favor of newlib code 
Drop the Cygwin-specific fenv.cc and fenv.h file and use the equivalent
newlib functionality now, so we have at least one example of a user for
this new mechanism.

fenv.c: allow _feinitialise to be called from Cygwin startup code

fenv.h: add declarations for fegetprec and fesetprec for Cygwin only.
        Fix a comment.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
 2021-04-13 12:55:34 +02:00
Corinna Vinschen 05753071c0 fenv: Move shared x86 sys/fenv.h from x86_64 to shared_x86 
drop matching symlink in i386

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
 2021-04-13 12:55:33 +02:00