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author | Gabriel F. T. Gomes <gabrielftg@linux.ibm.com> | 2019-07-11 11:48:24 -0300 |
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committer | Gabriel F. T. Gomes <gabrielftg@linux.ibm.com> | 2019-12-23 16:32:20 -0300 |
commit | 3021e781783d6fe12de4697b0d98957bc911cad3 (patch) | |
tree | e2160e9c74cc5343f69b42cf6a1ee3f5fad9a11e /sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt_r.c | |
parent | dce425341171ec5784c87165e23883630971bd97 (diff) | |
download | glibc-3021e781783d6fe12de4697b0d98957bc911cad3.tar.gz glibc-3021e781783d6fe12de4697b0d98957bc911cad3.tar.xz glibc-3021e781783d6fe12de4697b0d98957bc911cad3.zip |
ldbl-128ibm-compat: Add *cvt functions
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>
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt_r.c')
-rw-r--r-- | sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt_r.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt_r.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt_r.c new file mode 100644 index 0000000000..1a5e43972f --- /dev/null +++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt_r.c @@ -0,0 +1,34 @@ +/* IEEE binary128 versions of reentrant *cvt_r 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_snprintf. */ +#include <stdio.h> +typeof (snprintf) ___ieee128_snprintf attribute_hidden; +#define SNPRINTF ___ieee128_snprintf + +#define ECVT_R __qecvtieee128_r +#define FCVT_R __qfcvtieee128_r +#define __ECVT_R ___qecvtieee128_r +#define __FCVT_R ___qfcvtieee128_r +#include <efgcvt-ldbl-macros.h> +#include <efgcvt_r-template.c> + +#define cvt_symbol(local, symbol) \ + strong_alias (local, symbol) +cvt_symbol (___qfcvtieee128_r, __qfcvtieee128_r); +cvt_symbol (___qecvtieee128_r, __qecvtieee128_r); |