diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-03-26 13:32:19 +0000 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-06-12 14:32:18 -0300 |
| commit | 197dbda1a155324bfc52ae1bc3cc26e57955c1cf (patch) | |
| tree | f1f086a11f7ae0fa4847b30f160ce02f142e1569 /include/grp.h | |
| parent | 2731a326b10ba6d1646043cf28290584238b7ce4 (diff) | |
| download | glibc-197dbda1a155324bfc52ae1bc3cc26e57955c1cf.tar.gz glibc-197dbda1a155324bfc52ae1bc3cc26e57955c1cf.tar.xz glibc-197dbda1a155324bfc52ae1bc3cc26e57955c1cf.zip | |
math: Use wordsize-64 version for isnan
- math.h will use compiler builtin for gcc 4.4 when built without
-fsignaling-nans and the builtin is expanded inline for all
support architectures. As an example, there is no intra isnan
call on libm for the architecture I checked, x86, arm, aarch64,
and powerpc.
- The resulting binary difference on 32 bits architecture is minimum
for the non hotspot symbol.
- It helps wordsize-64 architectures that use ldbl-opt.
- It add some code simplification with reduction of duplicated
implementations.
Checked on powerpc-linux-gnu (built without --with-cpu, with
--with-cpu=power4 and with --with-cpu=power5+ and --disable-multi-arch),
powerpc64-linux-gnu (built without --with-cp and with --with-cpu=power5+
and --disable-multi-arch).
* sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c: Move to ...
* sysdeps/ieee754/dbl-64/s_isnan.c: ... here and format code.
Reviewed-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
Diffstat (limited to 'include/grp.h')
0 files changed, 0 insertions, 0 deletions