[PATCH 1/6] Prepare redirections for IEEE long double on powerpc64le

[Paul E Murphy]

And committed.  Thank you Gabriel and community for the heavy lifting on 
this and the many changes leading up to it. (My apologies for the email 
delay.  Some SMTP issues cropped up last night)

On 2/17/20 8:34 AM, Paul E Murphy wrote:
> Ping x2.  This has been run through all configs of many-build-glibcs.py 
> without any apparent issues.  Hearing nothing, I will commit this later 
> today.
> 
> On 2/10/20 3:32 PM, Paul E Murphy wrote:
>> Ping? If no objections I would like to commit this next Monday.
>>
>> I was under the incorrect assumption this patch had been sent out
>> in December as-is.  This is the continuation of 
>> https://sourceware.org/ml/libc-alpha/2019-12/msg00515.html based on my 
>> feedback from 
>> https://sourceware.org/ml/libc-alpha/2019-12/msg00521.html .
>>
>> On 2/3/20 3:10 PM, Paul E. Murphy wrote:
>>> From: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
>>>
>>> New since v4.
>>>
>>> Â Â  - Thanks, Paul, for the suggestion to split it from the last patch.
>>>
>>> -- 8< --
>>> All functions that have a format string, which can consume a long double
>>> argument, must have one version for each long double format supported on
>>> a platform.  On powerpc64le, these functions currently have two versions
>>> (i.e.: long double with the same format as double, and long double with
>>> IBM Extended Precision format).  Support for a third long double format
>>> option (i.e. long double with IEEE long double format) is being prepared
>>> and all the aforementioned functions now have a third version (not yet
>>> exported on the master branch, but the code is in).
>>>
>>> For these functions to get selected (during build time), references to
>>> them in user programs (or dependent libraries) must get redirected to
>>> the aforementioned new versions of the functions.  This patch installs
>>> the header magic required to perform such redirections.
>>>
>>> Notice, however, that since the redirections only happen when
>>> __LONG_DOUBLE_USES_FLOAT128 is set to 1, and no platform (including
>>> powerpc64le) currently does it, no redirections actually happen.
>>> Redirections and the exporting of the new functions will happen at the
>>> same time (when powerpc64le adds ldbl-128ibm-compat to their Implies.
>>> ---
>>>   argp/argp.h               |  3 ++-
>>>   libio/bits/stdio-ldbl.h   | 46 ++++++++++++++++++++++++++-------------
>>>   libio/stdio.h             | 16 +++++++++-----
>>>   misc/bits/syslog-ldbl.h   |  4 ++--
>>>   misc/err.h                |  3 ++-
>>>   misc/error.h              |  6 +++--
>>>   misc/sys/cdefs.h          | 38 ++++++++++++++++++++++++++++++--
>>>   misc/sys/syslog.h         |  4 +++-
>>>   stdio-common/printf.h     |  3 ++-
>>> Â  stdlib/bits/stdlib-ldbl.h | 22 +++++++++++++++++++
>>>   stdlib/monetary.h         |  3 ++-
>>>   stdlib/stdlib.h           |  4 +++-
>>>   wcsmbs/bits/wchar-ldbl.h  | 36 +++++++++++++++++++++++++-----
>>>   wcsmbs/wchar.h            | 14 +++++++-----
>>> Â  14 files changed, 159 insertions(+), 43 deletions(-)
>>>