mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 10:50:07 +00:00
3021e78178
This patch adds IEEE long double versions of q*cvt* functions for
powerpc64le. Unlike all other long double to/from string conversion
functions, these do not rely on internal functions that can take
floating-point numbers with different formats and act on them
accordingly, instead, the related files are rebuilt with the
-mabi=ieeelongdouble compiler flag set.
Having -mabi=ieeelongdouble passed to the compiler causes the object
files to be marked with a .gnu_attribute that is incompatible with the
.gnu_attribute in files built with -mabi=ibmlongdouble (the default).
The difference causes error messages similar to the following:
ld: libc_pic.a(s_isinfl.os) uses IBM long double,
libc_pic.a(ieee128-qefgcvt_r.os) uses IEEE long double.
collect2: error: ld returned 1 exit status
make[2]: *** [../Makerules:649: libc_pic.os] Error 1
Although this warning is useful in other situations, the library
actually needs to have functions with different long double formats, so
.gnu_attribute generation is explicitly disabled for these files with
the use of -mno-gnu-attribute.
Tested for powerpc64le on the branch that actually enables the
sysdeps/ieee754/ldbl-128ibm-compat for powerpc64le.
Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>
53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
/* IEEE binary128 versions of *cvt functions.
|
|
Copyright (C) 2018 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* When in IEEE long double mode, call ___ieee128_sprintf. */
|
|
#include <stdio.h>
|
|
typeof (sprintf) ___ieee128_sprintf attribute_hidden;
|
|
#define SPRINTF ___ieee128_sprintf
|
|
|
|
/* Declare internal functions: ___qecvtieee128_r and ___qfcvtieee128_r,
|
|
built from a different compiling unit, and called from here. */
|
|
#include <stdlib.h>
|
|
typeof (qecvt_r) ___qecvtieee128_r;
|
|
typeof (qfcvt_r) ___qfcvtieee128_r;
|
|
|
|
/* Rename the static buffers and pointer, otherwise the IEEE long double
|
|
variants of qecvt and qfcvt would reuse the same buffers and pointer
|
|
as their non-IEEE long double counterparts. */
|
|
#define qecvt_buffer qecvtieee128_buffer
|
|
#define qfcvt_buffer qfcvtieee128_buffer
|
|
#define qfcvt_bufptr qfcvtieee128_bufptr
|
|
|
|
#define ECVT __qecvtieee128
|
|
#define FCVT __qfcvtieee128
|
|
#define GCVT __qgcvtieee128
|
|
#define __ECVT ___qecvtieee128
|
|
#define __FCVT ___qfcvtieee128
|
|
#define __GCVT ___qgcvtieee128
|
|
#define __ECVT_R ___qecvtieee128_r
|
|
#define __FCVT_R ___qfcvtieee128_r
|
|
#include <efgcvt-ldbl-macros.h>
|
|
#include <efgcvt-template.c>
|
|
|
|
#define cvt_symbol(local, symbol) \
|
|
strong_alias (local, symbol)
|
|
cvt_symbol (___qfcvtieee128, __qfcvtieee128);
|
|
cvt_symbol (___qecvtieee128, __qecvtieee128);
|
|
cvt_symbol (___qgcvtieee128, __qgcvtieee128);
|