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glibc/sysdeps/ieee754/ldbl-opt/Makefile
Joseph Myers 7ec903e028 Implement C23 exp2m1, exp10m1 
C23 adds various <math.h> function families originally defined in TS
18661-4.  Add the exp2m1 and exp10m1 functions (exp2(x)-1 and
exp10(x)-1, like expm1).

As with other such functions, these use type-generic templates that
could be replaced with faster and more accurate type-specific
implementations in future.  Test inputs are copied from those for
expm1, plus some additions close to the overflow threshold (copied
from exp2 and exp10) and also some near the underflow threshold.

exp2m1 has the unusual property of having an input (M_MAX_EXP) where
whether the function overflows (under IEEE semantics) depends on the
rounding mode.  Although these could reasonably be XFAILed in the
testsuite (as we do in some cases for arguments very close to a
function's overflow threshold when an error of a few ulps in the
implementation can result in the implementation not agreeing with an
ideal one on whether overflow takes place - the testsuite isn't smart
enough to handle this automatically), since these functions aren't
required to be correctly rounding, I made the implementation check for
and handle this case specially.

The Makefile ordering expected by lint-makefiles for the new functions
is a bit peculiar, but I implemented it in this patch so that the test
passes; I don't know why log2 also needed moving in one Makefile
variable setting when it didn't in my previous patches, but the
failure showed a different place was expected for that function as
well.

The powerpc64le IFUNC setup seems not to be as self-contained as one
might hope; it shouldn't be necessary to add IFUNCs for new functions
such as these simply to get them building, but without setting up
IFUNCs for the new functions, there were undefined references to
__GI___expm1f128 (that IFUNC machinery results in no such function
being defined, but doesn't stop include/math.h from doing the
redirection resulting in the exp2m1f128 and exp10m1f128
implementations expecting to call it).

Tested for x86_64 and x86, and with build-many-glibcs.py.
2024-06-17 16:31:49 +00:00

509 lines
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Makefile
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# The`long double' type is a distinct type we support if
# -mlong-double-128 option is used (or when it becomes a default
# when -mlong-double-64 is not used).
long-double-fcts = yes
ifeq (,$(filter -mlong-double-128,$(sysdep-CFLAGS)))
sysdep-CFLAGS += -mlong-double-128
endif
ifeq ($(subdir),math)
libm-routines += s_nexttowardfd
routines += nldbl-compat
extra-libs += libnldbl
libnldbl-calls = \
acos \
acosh \
asin \
asinh \
asprintf \
asprintf_chk \
atan \
atan2 \
atanh \
cabs \
cacos \
cacosh \
canonicalize \
carg \
casin \
casinh \
catan \
catanh \
cbrt \
ccos \
ccosh \
ceil \
cexp \
cimag \
clog \
clog10 \
conj \
copysign \
cos \
cosh \
cpow \
cproj \
creal \
csin \
csinh \
csqrt \
ctan \
ctanh \
dadd \
ddiv \
dfma \
dmul \
dprintf \
dprintf_chk \
dsqrt \
dsub \
erf \
erfc \
exp \
exp10m1 \
exp2 \
exp10 \
exp2m1 \
expm1 \
fabs \
fadd \
fdim \
fdiv \
ffma \
finite \
floor \
fma \
fmax \
fmaximum \
fmaximum_mag \
fmaximum_mag_num \
fmaximum_num \
fmaxmag \
fmin \
fminimum \
fminimum_mag \
fminimum_mag_num \
fminimum_num \
fminmag \
fmod \
fmul \
fprintf \
fprintf_chk \
frexp \
fromfp \
fromfpx \
fscanf \
fsqrt \
fsub \
fwprintf \
fwprintf_chk \
fwscanf \
gamma \
getpayload \
hypot \
ilogb \
iovfscanf \
isinf \
isnan \
isoc23_fscanf \
isoc23_fwscanf \
isoc23_scanf \
isoc23_sscanf \
isoc23_swscanf \
isoc23_vfscanf \
isoc23_vfwscanf \
isoc23_vscanf \
isoc23_vsscanf \
isoc23_vswscanf \
isoc23_vwscanf \
isoc23_wscanf \
isoc99_fscanf \
isoc99_fwscanf \
isoc99_scanf \
isoc99_sscanf \
isoc99_swscanf \
isoc99_vfscanf \
isoc99_vfwscanf \
isoc99_vscanf \
isoc99_vsscanf \
isoc99_vswscanf \
isoc99_vwscanf \
isoc99_wscanf \
j0 \
j1 \
jn \
ldexp \
lgamma \
lgamma_r \
llogb \
llrint \
llround \
log \
log2 \
log10 \
log10p1 \
log1p \
log2p1 \
logb \
lrint \
lround \
modf \
nan \
nearbyint \
nextafter \
nextdown \
nexttoward \
nexttowardf \
nextup \
obstack_printf \
obstack_printf_chk \
obstack_vprintf \
obstack_vprintf_chk \
pow \
printf \
printf_chk \
printf_fp \
printf_size \
qecvt \
qecvt_r \
qfcvt \
qfcvt_r \
qgcvt \
remainder \
remquo \
rint \
round \
roundeven \
scalb \
scalbln \
scalbn \
scanf \
setpayload \
setpayloadsig \
signbit \
significand \
sin \
sincos \
sinh \
snprintf \
snprintf_chk \
sprintf \
sprintf_chk \
sqrt \
sscanf \
strfmon \
strfmon_l \
strfroml \
strtold \
strtold_l \
strtoldint \
swprintf \
swprintf_chk \
swscanf \
syslog \
syslog_chk \
tan \
tanh \
tgamma \
totalorder \
totalordermag \
trunc \
ufromfp \
ufromfpx \
vasprintf \
vasprintf_chk \
vdprintf \
vdprintf_chk \
vfprintf \
vfprintf_chk \
vfscanf \
vfwprintf \
vfwprintf_chk \
vfwscanf \
vprintf \
vprintf_chk \
vscanf \
vsnprintf \
vsnprintf_chk \
vsprintf \
vsprintf_chk \
vsscanf \
vswprintf \
vswprintf_chk \
vswscanf \
vsyslog \
vsyslog_chk \
vwprintf \
vwprintf_chk \
vwscanf \
wcstold \
wcstold_l \
wcstoldint \
wprintf \
wprintf_chk \
wscanf \
y0 \
y1 \
yn \
# libnldbl-calls
libnldbl-routines = $(libnldbl-calls:%=nldbl-%)
libnldbl-inhibit-o = $(object-suffixes)
libnldbl-static-only-routines = $(libnldbl-routines)
extra-objs += $(addsuffix .oS, $(libnldbl-routines))
CFLAGS-nldbl-acos.c = -fno-builtin-acosl
CFLAGS-nldbl-acosh.c = -fno-builtin-acoshl
CFLAGS-nldbl-asin.c = -fno-builtin-asinl
CFLAGS-nldbl-asinh.c = -fno-builtin-asinhl
CFLAGS-nldbl-atan.c = -fno-builtin-atanl
CFLAGS-nldbl-atan2.c = -fno-builtin-atan2l
CFLAGS-nldbl-atanh.c = -fno-builtin-atanhl
CFLAGS-nldbl-cabs.c = -fno-builtin-cabsl
CFLAGS-nldbl-cacos.c = -fno-builtin-cacosl
CFLAGS-nldbl-cacosh.c = -fno-builtin-cacoshl
CFLAGS-nldbl-canonicalize.c = -fno-builtin-canonicalizel
CFLAGS-nldbl-carg.c = -fno-builtin-cargl
CFLAGS-nldbl-casin.c = -fno-builtin-casinl
CFLAGS-nldbl-casinh.c = -fno-builtin-casinhl
CFLAGS-nldbl-catan.c = -fno-builtin-catanl
CFLAGS-nldbl-catanh.c = -fno-builtin-catanhl
CFLAGS-nldbl-cbrt.c = -fno-builtin-cbrtl
CFLAGS-nldbl-ccos.c = -fno-builtin-ccosl
CFLAGS-nldbl-ccosh.c = -fno-builtin-ccoshl
CFLAGS-nldbl-ceil.c = -fno-builtin-ceill
CFLAGS-nldbl-cexp.c = -fno-builtin-cexpl
CFLAGS-nldbl-cimag.c = -fno-builtin-cimagl
CFLAGS-nldbl-clog.c = -fno-builtin-clogl
CFLAGS-nldbl-clog10.c = -fno-builtin-clog10l
CFLAGS-nldbl-conj.c = -fno-builtin-conjl
CFLAGS-nldbl-copysign.c = -fno-builtin-copysignl
CFLAGS-nldbl-cos.c = -fno-builtin-cosl
CFLAGS-nldbl-cosh.c = -fno-builtin-coshl
CFLAGS-nldbl-cpow.c = -fno-builtin-cpowl
CFLAGS-nldbl-cproj.c = -fno-builtin-cprojl
CFLAGS-nldbl-creal.c = -fno-builtin-creall
CFLAGS-nldbl-csin.c = -fno-builtin-csinl
CFLAGS-nldbl-csinh.c = -fno-builtin-csinhl
CFLAGS-nldbl-csqrt.c = -fno-builtin-csqrtl
CFLAGS-nldbl-ctan.c = -fno-builtin-ctanl
CFLAGS-nldbl-ctanh.c = -fno-builtin-ctanhl
CFLAGS-nldbl-dadd.c = -fno-builtin-daddl
CFLAGS-nldbl-ddiv.c = -fno-builtin-ddivl
CFLAGS-nldbl-dfma.c = -fno-builtin-dfmal
CFLAGS-nldbl-dmul.c = -fno-builtin-dmull
CFLAGS-nldbl-dsqrt.c = -fno-builtin-dsqrtl
CFLAGS-nldbl-dsub.c = -fno-builtin-dsubl
CFLAGS-nldbl-erf.c = -fno-builtin-erfl
CFLAGS-nldbl-erfc.c = -fno-builtin-erfcl
CFLAGS-nldbl-exp.c = -fno-builtin-expl
CFLAGS-nldbl-exp10.c = -fno-builtin-exp10l
CFLAGS-nldbl-exp10m1.c = -fno-builtin-exp10m1l
CFLAGS-nldbl-exp2.c = -fno-builtin-exp2l
CFLAGS-nldbl-exp2m1.c = -fno-builtin-exp2m1l
CFLAGS-nldbl-expm1.c = -fno-builtin-expm1l
CFLAGS-nldbl-fabs.c = -fno-builtin-fabsl
CFLAGS-nldbl-fadd.c = -fno-builtin-faddl
CFLAGS-nldbl-fdim.c = -fno-builtin-fdiml
CFLAGS-nldbl-fdiv.c = -fno-builtin-fdivl
CFLAGS-nldbl-ffma.c = -fno-builtin-ffmal
CFLAGS-nldbl-finite.c = -fno-builtin-finitel
CFLAGS-nldbl-floor.c = -fno-builtin-floorl
CFLAGS-nldbl-fma.c = -fno-builtin-fmal
CFLAGS-nldbl-fmax.c = -fno-builtin-fmaxl
CFLAGS-nldbl-fmaximum.c += -fno-builtin-fmaximuml
CFLAGS-nldbl-fmaximum_mag.c += -fno-builtin-fmaximum_magl
CFLAGS-nldbl-fmaximum_mag_num.c += -fno-builtin-fmaximum_mag_numl
CFLAGS-nldbl-fmaximum_num.c += -fno-builtin-fmaximum_numl
CFLAGS-nldbl-fmaxmag.c = -fno-builtin-fmaxmagl
CFLAGS-nldbl-fmin.c = -fno-builtin-fminl
CFLAGS-nldbl-fminimum.c += -fno-builtin-fminimuml
CFLAGS-nldbl-fminimum_mag.c += -fno-builtin-fminimum_magl
CFLAGS-nldbl-fminimum_mag_num.c += -fno-builtin-fminimum_mag_numl
CFLAGS-nldbl-fminimum_num.c += -fno-builtin-fminimum_numl
CFLAGS-nldbl-fminmag.c = -fno-builtin-fminmagl
CFLAGS-nldbl-fmod.c = -fno-builtin-fmodl
CFLAGS-nldbl-fmul.c = -fno-builtin-fmull
CFLAGS-nldbl-frexp.c = -fno-builtin-frexpl
CFLAGS-nldbl-fromfp.c = -fno-builtin-fromfpl
CFLAGS-nldbl-fromfpx.c = -fno-builtin-fromfpxl
CFLAGS-nldbl-fsqrt.c = -fno-builtin-fsqrtl
CFLAGS-nldbl-fsub.c = -fno-builtin-fsubl
CFLAGS-nldbl-gamma.c = -fno-builtin-gammal
CFLAGS-nldbl-getpayload.c = -fno-builtin-getpayloadl
CFLAGS-nldbl-hypot.c = -fno-builtin-hypotl
CFLAGS-nldbl-ilogb.c = -fno-builtin-ilogbl
CFLAGS-nldbl-isinf.c = -fno-builtin-isinfl
CFLAGS-nldbl-isnan.c = -fno-builtin-isnanl
CFLAGS-nldbl-j0.c = -fno-builtin-j0l
CFLAGS-nldbl-j1.c = -fno-builtin-j1l
CFLAGS-nldbl-jn.c = -fno-builtin-jnl
CFLAGS-nldbl-ldexp.c = -fno-builtin-ldexpl
CFLAGS-nldbl-lgamma.c = -fno-builtin-lgammal
CFLAGS-nldbl-lgamma_r.c = -fno-builtin-lgammal_r
CFLAGS-nldbl-llogb.c = -fno-builtin-llogbl
CFLAGS-nldbl-llrint.c = -fno-builtin-llrintl
CFLAGS-nldbl-llround.c = -fno-builtin-llroundl
CFLAGS-nldbl-log.c = -fno-builtin-logl
CFLAGS-nldbl-log10.c = -fno-builtin-log10l
CFLAGS-nldbl-log10p1.c = -fno-builtin-log10p1l
CFLAGS-nldbl-log1p.c = -fno-builtin-log1pl -fno-builtin-logp1l
CFLAGS-nldbl-log2.c = -fno-builtin-log2l
CFLAGS-nldbl-log2p1.c = -fno-builtin-log2p1l
CFLAGS-nldbl-logb.c = -fno-builtin-logbl
CFLAGS-nldbl-lrint.c = -fno-builtin-lrintl
CFLAGS-nldbl-lround.c = -fno-builtin-lroundl
CFLAGS-nldbl-modf.c = -fno-builtin-modfl
CFLAGS-nldbl-nan.c = -fno-builtin-nanl
CFLAGS-nldbl-nearbyint.c = -fno-builtin-nearbyintl
CFLAGS-nldbl-nextafter.c = -fno-builtin-nextafterl
CFLAGS-nldbl-nextdown.c = -fno-builtin-nextdownl
CFLAGS-nldbl-nexttoward.c = -fno-builtin-nexttoward -fno-builtin-nexttowardl
CFLAGS-nldbl-nexttowardf.c = -fno-builtin-nexttowardf
CFLAGS-nldbl-nextup.c = -fno-builtin-nextupl
CFLAGS-nldbl-pow.c = -fno-builtin-powl
CFLAGS-nldbl-remainder.c = -fno-builtin-remainderl -fno-builtin-dreml
CFLAGS-nldbl-remquo.c = -fno-builtin-remquol
CFLAGS-nldbl-rint.c = -fno-builtin-rintl
CFLAGS-nldbl-round.c = -fno-builtin-roundl
CFLAGS-nldbl-roundeven.c = -fno-builtin-roundevenl
CFLAGS-nldbl-scalb.c = -fno-builtin-scalbl
CFLAGS-nldbl-scalbln.c = -fno-builtin-scalblnl
CFLAGS-nldbl-scalbn.c = -fno-builtin-scalbnl
CFLAGS-nldbl-setpayload.c = -fno-builtin-setpayloadl
CFLAGS-nldbl-setpayloadsig.c = -fno-builtin-setpayloadsigl
CFLAGS-nldbl-significand.c = -fno-builtin-significandl
CFLAGS-nldbl-sin.c = -fno-builtin-sinl
CFLAGS-nldbl-sincos.c = -fno-builtin-sincosl
CFLAGS-nldbl-sinh.c = -fno-builtin-sinhl
CFLAGS-nldbl-sqrt.c = -fno-builtin-sqrtl
CFLAGS-nldbl-tan.c = -fno-builtin-tanl
CFLAGS-nldbl-tanh.c = -fno-builtin-tanhl
CFLAGS-nldbl-tgamma.c = -fno-builtin-tgammal
CFLAGS-nldbl-totalorder.c = -fno-builtin-totalorderl
CFLAGS-nldbl-totalordermag.c = -fno-builtin-totalordermagl
CFLAGS-nldbl-trunc.c = -fno-builtin-truncl
CFLAGS-nldbl-ufromfp.c = -fno-builtin-ufromfpl
CFLAGS-nldbl-ufromfpx.c = -fno-builtin-ufromfpxl
CFLAGS-nldbl-y0.c = -fno-builtin-y0l
CFLAGS-nldbl-y1.c = -fno-builtin-y1l
CFLAGS-nldbl-yn.c = -fno-builtin-ynl
tests += \
test-narrow-macros-ldbl-64 \
test-nldbl-redirect \
test-redirection-ldbl-64 \
# tests
CFLAGS-test-narrow-macros-ldbl-64.c += -mlong-double-64
CFLAGS-test-nldbl-redirect.c += -mlong-double-64
CFLAGS-test-redirection-ldbl-64.c += -mlong-double-64
$(objpfx)test-nldbl-redirect: $(objpfx)libnldbl_nonshared.a
endif
# Tests for argp.h functions (reusing the relevant tests from argp/)
ifeq ($(subdir),argp)
tests-internal += tst-nldbl-argp
$(objpfx)tst-nldbl-argp.c: tst-ldbl-argp.c
cp $< $@
CFLAGS-tst-nldbl-argp.c += -mlong-double-64
endif
# Tests for err.h and error.h functions (reusing the relevant tests from
# misc/).
ifeq ($(subdir), misc)
tests-internal += tst-nldbl-warn
tests-internal += tst-nldbl-error
tests-internal += tst-nldbl-errorfptr
$(objpfx)tst-nldbl-warn.c: tst-ldbl-warn.c
cp $< $@
$(objpfx)tst-nldbl-error.c: tst-ldbl-error.c
cp $< $@
$(objpfx)tst-nldbl-errorfptr.c: tst-ldbl-errorfptr.c
cp $< $@
CFLAGS-tst-nldbl-warn.c += -mlong-double-64
CFLAGS-tst-nldbl-error.c += -mlong-double-64
CFLAGS-tst-nldbl-errorfptr.c += -mlong-double-64
endif
ifeq ($(subdir), stdio-common)
tests += \
tst-nldbl-scanf-binary-c11 \
tst-nldbl-scanf-binary-c23 \
tst-nldbl-scanf-binary-gnu11 \
tst-nldbl-scanf-binary-gnu89 \
# tests
# Some versions of GCC supported for building glibc do not support -std=c23
# (added in GCC 14), or the older name -std=c2x (added in GCC 9), so
# the test for that version uses -std=c11 and then _ISOC23_SOURCE is defined in
# the test as needed.
CFLAGS-tst-nldbl-scanf-binary-c11.c += -mlong-double-64 -std=c11 \
-DOBJPFX=\"$(objpfx)\"
CFLAGS-tst-nldbl-scanf-binary-c23.c += -mlong-double-64 -std=c11 \
-DOBJPFX=\"$(objpfx)\"
CFLAGS-tst-nldbl-scanf-binary-gnu11.c += -mlong-double-64 -std=gnu11 \
-DOBJPFX=\"$(objpfx)\"
CFLAGS-tst-nldbl-scanf-binary-gnu89.c += -mlong-double-64 -std=gnu89 \
-DOBJPFX=\"$(objpfx)\"
endif
ifeq ($(subdir), wcsmbs)
tests += \
tst-nldbl-wscanf-binary-c11 \
tst-nldbl-wscanf-binary-c23 \
tst-nldbl-wscanf-binary-gnu11 \
tst-nldbl-wscanf-binary-gnu89 \
# tests
# Some versions of GCC supported for building glibc do not support -std=c23
# (added in GCC 14), or the older name -std=c2x (added in GCC 9), so
# the test for that version uses -std=c11 and then _ISOC23_SOURCE is defined in
# the test as needed.
CFLAGS-tst-nldbl-wscanf-binary-c11.c += -mlong-double-64 -std=c11 \
-DOBJPFX=\"$(objpfx)\"
CFLAGS-tst-nldbl-wscanf-binary-c23.c += -mlong-double-64 -std=c11 \
-DOBJPFX=\"$(objpfx)\"
CFLAGS-tst-nldbl-wscanf-binary-gnu11.c += -mlong-double-64 -std=gnu11 \
-DOBJPFX=\"$(objpfx)\"
CFLAGS-tst-nldbl-wscanf-binary-gnu89.c += -mlong-double-64 -std=gnu89 \
-DOBJPFX=\"$(objpfx)\"
endif
routines_no_fortify += \
nldbl-asprintf \
nldbl-dprintf \
nldbl-fprintf \
nldbl-fwprintf \
nldbl-obstack_printf \
nldbl-obstack_vprintf \
nldbl-printf \
nldbl-snprintf \
nldbl-sprintf \
nldbl-swprintf \
nldbl-syslog \
nldbl-vasprintf \
nldbl-vdprintf \
nldbl-vfprintf \
nldbl-vfwprintf \
nldbl-vprintf \
nldbl-vsnprintf \
nldbl-vsprintf \
nldbl-vswprintf \
nldbl-vsyslog \
nldbl-vwprintf \
nldbl-wprintf \
# routines_no_fortify
# We can't rely on Makeconfig here for whatever reason
CFLAGS-.oS += $(call elide-fortify-source,.oS,$(routines_no_fortify))
CFLAGS-.oS += $(call elide-fortify-source,_chk.oS,$(routines_no_fortify))
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