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d96164c330
Various floating-point functions have code to force underflow exceptions if a tiny result was computed in a way that might not have resulted in such exceptions even though the result is inexact. This typically uses math_force_eval to ensure that the underflowing expression is evaluated, but sometimes uses volatile. This patch refactors such code to use three new macros math_check_force_underflow, math_check_force_underflow_nonneg and math_check_force_underflow_complex (which in turn use math_force_eval). In the limited number of cases not suited to a simple conversion to these macros, existing uses of volatile are changed to use math_force_eval instead. The converted code does not always execute exactly the same sequence of operations as the original code, but the overall effects should be the same. Tested for x86_64, x86, mips64 and powerpc. * sysdeps/generic/math_private.h (fabs_tg): New macro. (min_of_type): Likewise. (math_check_force_underflow): Likewise. (math_check_force_underflow_nonneg): Likewise. (math_check_force_underflow_complex): Likewise. * math/e_exp2l.c (__ieee754_exp2l): Use math_check_force_underflow_nonneg. * math/k_casinh.c (__kernel_casinh): Likewise. * math/k_casinhf.c (__kernel_casinhf): Likewise. * math/k_casinhl.c (__kernel_casinhl): Likewise. * math/s_catan.c (__catan): Use math_check_force_underflow_complex. * math/s_catanf.c (__catanf): Likewise. * math/s_catanh.c (__catanh): Likewise. * math/s_catanhf.c (__catanhf): Likewise. * math/s_catanhl.c (__catanhl): Likewise. * math/s_catanl.c (__catanl): Likewise. * math/s_ccosh.c (__ccosh): Likewise. * math/s_ccoshf.c (__ccoshf): Likewise. * math/s_ccoshl.c (__ccoshl): Likewise. * math/s_cexp.c (__cexp): Likewise. * math/s_cexpf.c (__cexpf): Likewise. * math/s_cexpl.c (__cexpl): Likewise. * math/s_clog.c (__clog): Use math_check_force_underflow_nonneg. * math/s_clog10.c (__clog10): Likewise. * math/s_clog10f.c (__clog10f): Likewise. * math/s_clog10l.c (__clog10l): Likewise. * math/s_clogf.c (__clogf): Likewise. * math/s_clogl.c (__clogl): Likewise. * math/s_csin.c (__csin): Use math_check_force_underflow_complex. * math/s_csinf.c (__csinf): Likewise. * math/s_csinh.c (__csinh): Likewise. * math/s_csinhf.c (__csinhf): Likewise. * math/s_csinhl.c (__csinhl): Likewise. * math/s_csinl.c (__csinl): Likewise. * math/s_csqrt.c (__csqrt): Use math_check_force_underflow. * math/s_csqrtf.c (__csqrtf): Likewise. * math/s_csqrtl.c (__csqrtl): Likewise. * math/s_ctan.c (__ctan): Use math_check_force_underflow_complex. * math/s_ctanf.c (__ctanf): Likewise. * math/s_ctanh.c (__ctanh): Likewise. * math/s_ctanhf.c (__ctanhf): Likewise. * math/s_ctanhl.c (__ctanhl): Likewise. * math/s_ctanl.c (__ctanl): Likewise. * stdlib/strtod_l.c (round_and_return): Use math_force_eval instead of volatile. * sysdeps/ieee754/dbl-64/e_asin.c (__ieee754_asin): Use math_check_force_underflow. * sysdeps/ieee754/dbl-64/e_atanh.c (__ieee754_atanh): Likewise. * sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Do not use volatile when forcing underflow. * sysdeps/ieee754/dbl-64/e_exp2.c (__ieee754_exp2): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/dbl-64/e_gamma_r.c (__ieee754_gamma_r): Likewise. * sysdeps/ieee754/dbl-64/e_j1.c (__ieee754_j1): Use math_check_force_underflow. * sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_jn): Likewise. * sysdeps/ieee754/dbl-64/e_sinh.c (__ieee754_sinh): Likewise. * sysdeps/ieee754/dbl-64/s_asinh.c (__asinh): Likewise. * sysdeps/ieee754/dbl-64/s_atan.c (atan): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/dbl-64/s_erf.c (__erf): Use math_check_force_underflow. * sysdeps/ieee754/dbl-64/s_expm1.c (__expm1): Likewise. * sysdeps/ieee754/dbl-64/s_fma.c (__fma): Use math_force_eval instead of volatile. * sysdeps/ieee754/dbl-64/s_log1p.c (__log1p): Use math_check_force_underflow. * sysdeps/ieee754/dbl-64/s_sin.c (__sin): Likewise. * sysdeps/ieee754/dbl-64/s_tan.c (tan): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/dbl-64/s_tanh.c (__tanh): Use math_check_force_underflow. * sysdeps/ieee754/flt-32/e_asinf.c (__ieee754_asinf): Likewise. * sysdeps/ieee754/flt-32/e_atanhf.c (__ieee754_atanhf): Likewise. * sysdeps/ieee754/flt-32/e_exp2f.c (__ieee754_exp2f): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/flt-32/e_gammaf_r.c (__ieee754_gammaf_r): Likewise. * sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_j1f): Use math_check_force_underflow. * sysdeps/ieee754/flt-32/e_jnf.c (__ieee754_jnf): Likewise. * sysdeps/ieee754/flt-32/e_sinhf.c (__ieee754_sinhf): Likewise. * sysdeps/ieee754/flt-32/k_sinf.c (__kernel_sinf): Likewise. * sysdeps/ieee754/flt-32/k_tanf.c (__kernel_tanf): Likewise. * sysdeps/ieee754/flt-32/s_asinhf.c (__asinhf): Likewise. * sysdeps/ieee754/flt-32/s_atanf.c (__atanf): Likewise. * sysdeps/ieee754/flt-32/s_erff.c (__erff): Likewise. * sysdeps/ieee754/flt-32/s_expm1f.c (__expm1f): Likewise. * sysdeps/ieee754/flt-32/s_log1pf.c (__log1pf): Likewise. * sysdeps/ieee754/flt-32/s_tanhf.c (__tanhf): Likewise. * sysdeps/ieee754/ldbl-128/e_asinl.c (__ieee754_asinl): Likewise. * sysdeps/ieee754/ldbl-128/e_atanhl.c (__ieee754_atanhl): Likewise. * sysdeps/ieee754/ldbl-128/e_expl.c (__ieee754_expl): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/ldbl-128/e_gammal_r.c (__ieee754_gammal_r): Likewise. * sysdeps/ieee754/ldbl-128/e_j1l.c (__ieee754_j1l): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-128/e_jnl.c (__ieee754_jnl): Likewise. * sysdeps/ieee754/ldbl-128/e_sinhl.c (__ieee754_sinhl): Likewise. * sysdeps/ieee754/ldbl-128/k_sincosl.c (__kernel_sincosl): Likewise. * sysdeps/ieee754/ldbl-128/k_sinl.c (__kernel_sinl): Likewise. * sysdeps/ieee754/ldbl-128/k_tanl.c (__kernel_tanl): Likewise. * sysdeps/ieee754/ldbl-128/s_asinhl.c (__asinhl): Likewise. * sysdeps/ieee754/ldbl-128/s_atanl.c (__atanl): Likewise. * sysdeps/ieee754/ldbl-128/s_erfl.c (__erfl): Likewise. * sysdeps/ieee754/ldbl-128/s_expm1l.c (__expm1l): Likewise. * sysdeps/ieee754/ldbl-128/s_fmal.c (__fmal): Use math_force_eval instead of volatile. * sysdeps/ieee754/ldbl-128/s_log1pl.c (__log1pl): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-128/s_tanhl.c (__tanhl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_asinl.c (__ieee754_asinl): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-128ibm/e_atanhl.c (__ieee754_atanhl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (__ieee754_gammal_r): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/ldbl-128ibm/e_jnl.c (__ieee754_jnl): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-128ibm/e_sinhl.c (__ieee754_sinhl): Likewise. * sysdeps/ieee754/ldbl-128ibm/k_sincosl.c (__kernel_sincosl): Likewise. * sysdeps/ieee754/ldbl-128ibm/k_sinl.c (__kernel_sinl): Likewise. * sysdeps/ieee754/ldbl-128ibm/k_tanl.c (__kernel_tanl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_asinhl.c (__asinhl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_atanl.c (__atanl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_erfl.c (__erfl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_tanhl.c (__tanhl): Likewise. * sysdeps/ieee754/ldbl-96/e_asinl.c (__ieee754_asinl): Likewise. * sysdeps/ieee754/ldbl-96/e_atanhl.c (__ieee754_atanhl): Likewise. * sysdeps/ieee754/ldbl-96/e_gammal_r.c (__ieee754_gammal_r): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/ldbl-96/e_j1l.c (__ieee754_j1l): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-96/e_jnl.c (__ieee754_jnl): Likewise. * sysdeps/ieee754/ldbl-96/e_sinhl.c (__ieee754_sinhl): Likewise. * sysdeps/ieee754/ldbl-96/k_sinl.c (__kernel_sinl): Likewise. * sysdeps/ieee754/ldbl-96/k_tanl.c (__kernel_tanl): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/ldbl-96/s_asinhl.c (__asinhl): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-96/s_erfl.c (__erfl): Likewise. * sysdeps/ieee754/ldbl-96/s_fmal.c (__fmal): Use math_force_eval instead of volatile. * sysdeps/ieee754/ldbl-96/s_tanhl.c (__tanhl): Use math_check_force_underflow. |
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.. | ||
bits | ||
sys | ||
a64l.c | ||
abort.c | ||
abs.c | ||
add_n.c | ||
addmul_1.c | ||
alloca.h | ||
at_quick_exit.c | ||
atexit.c | ||
atof.c | ||
atoi.c | ||
atol.c | ||
atoll.c | ||
bsearch.c | ||
bug-fmtmsg1.c | ||
bug-getcontext.c | ||
bug-strtod2.c | ||
bug-strtod.c | ||
canonicalize.c | ||
cmp.c | ||
cxa_at_quick_exit.c | ||
cxa_atexit.c | ||
cxa_finalize.c | ||
cxa_thread_atexit_impl.c | ||
dbl2mpn.c | ||
Depend | ||
div.c | ||
divmod_1.c | ||
divrem.c | ||
drand48_r.c | ||
drand48-iter.c | ||
drand48.c | ||
erand48_r.c | ||
erand48.c | ||
errno.h | ||
exit.c | ||
exit.h | ||
fmtmsg.c | ||
fmtmsg.h | ||
fpioconst.c | ||
fpioconst.h | ||
gen-fpioconst.c | ||
gen-tst-strtod-round.c | ||
getcontext.c | ||
getenv.c | ||
getsubopt.c | ||
gmp-impl.h | ||
gmp.h | ||
grouping.c | ||
grouping.h | ||
groupingwc.c | ||
inlines.c | ||
isomac.c | ||
jrand48_r.c | ||
jrand48.c | ||
l64a.c | ||
labs.c | ||
lcong48_r.c | ||
lcong48.c | ||
ldbl2mpn.c | ||
ldiv.c | ||
llabs.c | ||
lldiv.c | ||
longlong.h | ||
lrand48_r.c | ||
lrand48.c | ||
lshift.c | ||
makecontext.c | ||
Makefile | ||
mblen.c | ||
mbstowcs.c | ||
mbtowc.c | ||
mod_1.c | ||
monetary.h | ||
mp_clz_tab.c | ||
mpn2dbl.c | ||
mpn2flt.c | ||
mpn2ldbl.c | ||
mrand48_r.c | ||
mrand48.c | ||
msort.c | ||
mul_1.c | ||
mul_n.c | ||
mul.c | ||
nrand48_r.c | ||
nrand48.c | ||
old_atexit.c | ||
on_exit.c | ||
putenv.c | ||
qsort.c | ||
quick_exit.c | ||
rand_r.c | ||
rand.c | ||
random_r.c | ||
random.c | ||
rpmatch.c | ||
rshift.c | ||
secure-getenv.c | ||
seed48_r.c | ||
seed48.c | ||
setcontext.c | ||
setenv.c | ||
srand48_r.c | ||
srand48.c | ||
stdlib.h | ||
strfmon_l.c | ||
strfmon.c | ||
strtod_l.c | ||
strtod.c | ||
strtof_l.c | ||
strtof.c | ||
strtoimax.c | ||
strtol_l.c | ||
strtol.c | ||
strtold_l.c | ||
strtold.c | ||
strtoll_l.c | ||
strtoll.c | ||
strtoul_l.c | ||
strtoul.c | ||
strtoull_l.c | ||
strtoull.c | ||
strtoumax.c | ||
sub_n.c | ||
submul_1.c | ||
swapcontext.c | ||
system.c | ||
tens_in_limb.c | ||
test-a64l.c | ||
test-canon2.c | ||
test-canon.c | ||
testdiv.c | ||
testdiv.input | ||
testmb2.c | ||
testmb.c | ||
testrand.c | ||
testsort.c | ||
tst-atof1.c | ||
tst-atof2.c | ||
tst-bsearch.c | ||
tst-environ.c | ||
tst-fmtmsg.c | ||
tst-fmtmsg.sh | ||
tst-limits.c | ||
tst-makecontext2.c | ||
tst-makecontext3.c | ||
tst-makecontext.c | ||
tst-putenv.c | ||
tst-putenvmod.c | ||
tst-qsort2.c | ||
tst-qsort.c | ||
tst-rand48-2.c | ||
tst-rand48.c | ||
tst-random2.c | ||
tst-random.c | ||
tst-secure-getenv.c | ||
tst-setcontext2.c | ||
tst-setcontext3.c | ||
tst-setcontext3.sh | ||
tst-setcontext.c | ||
tst-strtod2.c | ||
tst-strtod3.c | ||
tst-strtod4.c | ||
tst-strtod5.c | ||
tst-strtod6.c | ||
tst-strtod-overflow.c | ||
tst-strtod-round-data | ||
tst-strtod-round.c | ||
tst-strtod-underflow.c | ||
tst-strtod.c | ||
tst-strtol.c | ||
tst-strtoll.c | ||
tst-system.c | ||
tst-tininess.c | ||
tst-tls-atexit-lib.c | ||
tst-tls-atexit-nodelete.c | ||
tst-tls-atexit.c | ||
tst-unsetenv1.c | ||
tst-xpg-basename.c | ||
ucontext.h | ||
udiv_qrnnd.c | ||
Versions | ||
wcstoimax.c | ||
wcstombs.c | ||
wcstoumax.c | ||
wctomb.c | ||
xpg_basename.c |