Joseph Myers 81325b12b1 Add _Float128 function aliases. ... This patch adds support for *f128 function aliases on platforms where long double has the binary128 format (and thus GCC 7 provides the _Float128 type with the same ABI as long double but as a distinct type in terms of C type compatibility). This is the same API as provided in glibc 2.26 for powerpc64le / x86_64 / x86 / ia64 where _Float128 has a different format from long double, with the bulk of the API coming from TS 18661-3. All the functions alias the corresponding long double functions, and __* function names are not provided since those are only needed once for each floating-point format, not more than once for different types with the same format (so for example, -ffinite-math-only maps foof128 to __fool_finite, while type-generic macros end up calling e.g. __issignalingl for _Float128 arguments on such platforms). The preparation for this feature was done in previous patches, so this one just needs to add the relevant makefile and header definitions, and update macro definitions of libm_alias_ldouble_other_r, to turn on the feature, and update documentation and ABI baselines. Tested (a) for x86_64, (b) for aarch64, (c) with build-many-glibcs.py with both GCC 6 and GCC 7. * sysdeps/ieee754/ldbl-128/Makeconfig: New file. * sysdeps/ieee754/ldbl-128/bits/floatn.h: Likewise. * sysdeps/ieee754/ldbl-128/float128-abi.h: Likewise. * sysdeps/generic/libm-alias-ldouble.h: Include <bits/floatn.h>. [__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (libm_alias_ldouble_other_r): Also create _Float128 alias. * sysdeps/ieee754/ldbl-opt/libm-alias-ldouble.h: Include <bits/floatn.h>. [__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (libm_alias_ldouble_other_r): Also create _Float128 alias. * manual/math.texi (Mathematics): Document additional architecture support for _Float128. * sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.		2017-10-18 17:37:18 +00:00
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c++-types.data	MIPS: Consolidate nptl/ subdirectories under linux/...	2014-06-27 11:41:04 -07:00
fstatfs64.c	Move mips from ports to libc.	2014-02-10 23:30:21 +00:00
fts64.c	Add LFS support for fts functions (bug 11460)	2015-11-06 11:24:16 +01:00
fts.c	Add LFS support for fts functions (bug 11460)	2015-11-06 11:24:16 +01:00
ftw64.c	Move mips from ports to libc.	2014-02-10 23:30:21 +00:00
ftw.c	Move mips from ports to libc.	2014-02-10 23:30:21 +00:00
ioctl.S	Hide internal __ioctl function [BZ #18822]	2017-10-01 15:59:06 -07:00
ld.abilist	ld.so: Remove __libc_memalign	2016-11-30 16:23:58 +01:00
libc.abilist	Add _Float128 function aliases.	2017-10-18 17:37:18 +00:00
libresolv.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
posix_fadvise64.c	Fix missing posix_fadvise64 mips64 static build (BZ #21232)	2017-03-14 16:42:08 -03:00
sendfile64.c	Move mips from ports to libc.	2014-02-10 23:30:21 +00:00
statfs64.c	Move mips from ports to libc.	2014-02-10 23:30:21 +00:00
syscalls.list	Consolidate Linux mmap implementation (BZ#21270)	2017-04-12 11:04:28 -03:00
sysdep.h	Update copyright dates with scripts/update-copyrights.	2017-01-01 00:14:16 +00:00