mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 12:11:10 +00:00
76c96cf7ec
Testing on mips64 showed missing underflow exceptions (from exp, for example) in non-default rounding modes, caused by libc_feresetround*_ctx wrongly restoring a saved environment without preserving exceptions, when that's only valid for the _noex variants. (I don't know why Steve didn't see this in his testing.) This patch fixes this by using libc_feupdateenv_mips_ctx for the relevant macros and removing the problem definitions. The problem definitions aren't suitable for the _noex macros either because they only discard exceptions in non-default rounding modes, and while for some uses of *_noex/*_NOEX it doesn't matter whether exceptions are discarded, dbl-64/e_remainder.c requires SET_RESTORE_ROUND_NOEX to cause exceptions to be discarded. I think the accumulated set of macros / functions for optimized exception / rounding mode handling could do with a careful review by now, and possible refactoring, and at least one new feature (extracting the saved rounding mode from an environment / context variable - see dbl-64/e_sqrt.c for a case where this could be used). Tested mips64. * sysdeps/mips/math_private.h [__mips_hard_float] (libc_feresetround_ctx): Define to libc_feupdateenv_mips_ctx not libc_feresetround_mips_ctx. [__mips_hard_float] (libc_feresetroundf_ctx): Likewise. [__mips_hard_float] (libc_feresetroundl_ctx): Likewise. [__mips_hard_float] (libc_feresetround_mips_ctx): Remove. |
||
---|---|---|
.. | ||
bits | ||
fpu | ||
ieee754 | ||
include/sys | ||
mips32 | ||
mips64 | ||
nptl | ||
soft-fp | ||
sys | ||
__longjmp.c | ||
abort-instr.h | ||
add_n.S | ||
addmul_1.S | ||
backtrace.c | ||
bsd-_setjmp.S | ||
bsd-setjmp.S | ||
configure | ||
configure.ac | ||
dl-dtprocnum.h | ||
dl-machine.h | ||
dl-procinfo.c | ||
dl-procinfo.h | ||
dl-tls.h | ||
dl-trampoline.c | ||
fpregdef.h | ||
fpu_control.h | ||
gccframe.h | ||
Implies | ||
jmpbuf-unwind.h | ||
ldsodefs.h | ||
libc-tls.c | ||
lshift.S | ||
machine-gmon.h | ||
Makefile | ||
math_private.h | ||
math-tests.h | ||
memcpy.S | ||
memset.S | ||
memusage.h | ||
mul_1.S | ||
preconfigure | ||
regdef.h | ||
rshift.S | ||
setjmp_aux.c | ||
setjmp.S | ||
sgidefs.h | ||
shlib-versions | ||
sotruss-lib.c | ||
stackinfo.h | ||
start.S | ||
sub_n.S | ||
submul_1.S | ||
tininess.h | ||
tls-macros.h | ||
tst-audit.h |