1 # Copyright (C) 1996-2016 Free Software Foundation, Inc.
2 # This file is part of the GNU C Library.
4 # The GNU C Library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Lesser General Public
6 # License as published by the Free Software Foundation; either
7 # version 2.1 of the License, or (at your option) any later version.
9 # The GNU C Library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Lesser General Public License for more details.
14 # You should have received a copy of the GNU Lesser General Public
15 # License along with the GNU C Library; if not, see
16 # <http://www.gnu.org/licenses/>.
18 # Makefile for the math library.
24 # Installed header files.
25 headers
:= math.h bits
/mathcalls.h bits
/mathinline.h bits
/huge_val.h \
26 bits
/huge_valf.h bits
/huge_vall.h bits
/inf.h bits
/nan.h \
27 fpu_control.h complex.h bits
/cmathcalls.h fenv.h \
28 bits
/fenv.h bits
/fenvinline.h bits
/mathdef.h tgmath.h \
29 bits
/math-finite.h bits
/math-vector.h \
30 bits
/libm-simd-decl-stubs.h
33 aux
:= setfpucw fpu_control
35 # Build the -lm library.
38 extra-libs-others
= $(extra-libs
)
40 libm-support
= s_lib_version s_matherr s_signgam \
41 fclrexcpt fgetexcptflg fraiseexcpt fsetexcptflg \
42 ftestexcept fegetround fesetround fegetenv feholdexcpt \
43 fesetenv feupdateenv t_exp fedisblxcpt feenablxcpt \
44 fegetexcept fesetexcept fetestexceptflag
46 # Wrappers for these functions generated per type using a file named
47 # <func>_template.c and the appropriate math-type-macros-<TYPE>.h.
48 gen-libm-calls
= cargF conjF cimagF crealF cabsF s_cacosF \
49 s_cacoshF s_ccosF s_ccoshF s_casinF s_csinF s_casinhF \
50 k_casinhF s_csinhF k_casinhF s_csinhF s_catanhF s_catanF \
51 s_ctanF s_ctanhF s_cexpF s_clogF s_cprojF s_csqrtF \
52 s_cpowF s_clog10F s_fdimF s_nextdownF
55 e_acosF e_acoshF e_asinF e_atan2F e_atanhF e_coshF e_expF e_fmodF \
56 e_hypotF e_j0F e_j1F e_jnF e_lgammaF_r e_logF e_log10F e_powF \
57 e_rem_pio2F e_remainderF e_scalbF e_sinhF e_sqrtF e_gammaF_r \
59 k_cosF k_rem_pio2F k_sinF k_tanF s_asinhF s_atanF s_cbrtF \
60 s_ceilF s_cosF s_erfF s_expm1F s_fabsF \
61 s_floorF s_log1pF w_log1pF s_logbF \
62 s_nextafterF s_nexttowardF s_rintF s_scalblnF w_scalblnF \
63 s_significandF s_sinF s_tanF s_tanhF w_acosF w_acoshF w_asinF \
64 w_atan2F w_atanhF w_coshF w_expF w_exp2F w_exp10F w_fmodF \
65 w_tgammaF w_hypotF w_j0F w_j1F w_jnF w_lgammaF w_lgammaF_r \
66 w_logF w_log10F w_powF w_remainderF w_scalbF w_sinhF w_sqrtF \
68 s_fpclassifyF s_fmaxF s_fminF s_nanF s_truncF \
69 s_remquoF e_log2F e_exp2F s_roundF s_nearbyintF s_sincosF \
70 s_fmaF s_lrintF s_llrintF s_lroundF s_llroundF e_exp10F w_log2F \
71 s_issignalingF
$(calls
:s_
%=m_
%) x2y2m1F \
72 gamma_productF lgamma_negF lgamma_productF \
73 s_nextupF
$(gen-libm-calls
)
75 libm-compat-calls-ldouble-yes
= w_lgamma_compatl k_standardl
76 libm-compat-calls
= w_lgamma_compatf w_lgamma_compat k_standard k_standardf \
77 $(libm-compat-calls-ldouble-
$(long-double-fcts
))
80 # Type specific routine support.
82 # The following three variables control what is included for each type:
84 # type-floatN-suffix = The suffix of the type
85 # type-floatN-routines = Type specific support objects
86 # type-floatN-yes = If the type is supported, evaluates to floatN
88 # Finally, note that types is an intentionally recursive variable.
89 # We only know the full set of supported types for the target machine
90 # after the Rules makefile has been parsed.
91 types
= $(type-ldouble-
$(long-double-fcts
)) double float
94 type-ldouble-suffix
:= l
95 type-ldouble-routines
:= t_sincosl k_sincosl
96 type-ldouble-yes
:= ldouble
100 type-double-routines
:= branred doasin dosincos halfulp mpa mpatan2 \
101 mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
105 type-float-suffix
:= f
106 type-float-routines
:=
109 # Apply suffix to each type in arg 1
110 type-foreach
= $(foreach t
,$(types
),$(subst F
,$(type-
$(t
)-suffix),$(1)))
112 libm-routines
= $(strip $(libm-support
) $(libm-compat-calls
) \
113 $(call type-foreach
, $(libm-calls
)) \
114 $(foreach t
, $(types
), $(type-
$(t
)-routines
))) \
116 # These functions are in libc instead of libm because __printf_fp
117 # calls them, so any program using printf will need them linked in,
118 # and we don't want to have to link every program with -lm.
119 # In libm-calls (above), list m_foo in place of s_foo for any
120 # routine that should be compiled separately for its libc and libm versions.
121 calls
= s_isinfF s_isnanF s_finiteF s_copysignF s_modfF s_scalbnF s_frexpF \
123 generated
+= $(foreach s
,.c .S
,$(call type-foreach
, $(calls
:s_
%=m_
%$(s
))))
124 routines
= $(call type-foreach
, $(calls
))
126 ifeq ($(build-mathvec
),yes
)
127 # We need to install libm.so as linker script
128 # for more comfortable use of vector math library.
129 install-lib-ldscripts
:= libm.so
130 install_subdir
: $(inst_libdir
)/libm.so
131 $(inst_libdir
)/libm.so
: $(common-objpfx
)format.lds \
135 (echo
'/* GNU ld script'; echo
'*/';\
137 echo
'GROUP ( $(slibdir)/libm.so$(libm.so-version) ' \
138 'AS_NEEDED ( $(libdir)/libmvec_nonshared.a $(slibdir)/libmvec.so$(libmvec.so-version) ) )' \
143 # Rules for the test suite.
144 tests
= test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
145 test-misc test-fpucw test-fpucw-ieee tst-definitions test-tgmath \
146 test-tgmath-ret bug-nextafter bug-nexttoward bug-tgmath1 \
147 test-tgmath-int test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan \
148 test-fenv-tls test-fenv-preserve test-fenv-return test-fenvinline \
149 test-nearbyint-except test-fenv-clear test-signgam-finite \
150 test-signgam-finite-c99 test-signgam-finite-c11 \
151 test-nearbyint-except-2 test-signgam-uchar test-signgam-uchar-init \
152 test-signgam-uint test-signgam-uint-init test-signgam-ullong \
153 test-signgam-ullong-init test-nan-overflow test-nan-payload \
154 test-fexcept test-fexcept-traps test-fesetexcept \
155 test-fesetexcept-traps test-fetestexceptflag
$(tests-static
)
156 tests-static
= test-fpucw-static test-fpucw-ieee-static \
157 test-signgam-uchar-static test-signgam-uchar-init-static \
158 test-signgam-uint-static test-signgam-uint-init-static \
159 test-signgam-ullong-static test-signgam-ullong-init-static
162 tests
+= test-math-isinff
166 libm-vec-tests
= $(addprefix test-
,$(libmvec-tests
))
168 libm-tests
= $(foreach t
,$(types
),test-
$(t
) test-
$(t
)-finite test-i
$(t
)) \
171 libm-tests.o
= $(addsuffix .o
,$(libm-tests
))
173 tests
+= $(libm-tests
)
174 libm-vec-test-wrappers
= $(addsuffix -wrappers
, $(libm-vec-tests
))
175 test-extras
+= $(libm-vec-test-wrappers
)
176 extra-test-objs
+= $(addsuffix .o
, $(libm-vec-test-wrappers
))
177 libm-tests-generated
= libm-test-ulps.h libm-have-vector-test.h libm-test.c
178 generated
+= $(libm-tests-generated
) libm-test.stmp
180 # This is needed for dependencies
181 before-compile
+= $(objpfx
)libm-test.c
183 ulps-file
= $(firstword $(wildcard $(sysdirs
:%=%/libm-test-ulps
)))
185 $(addprefix $(objpfx
), $(libm-tests-generated
)): $(objpfx
)libm-test.stmp
187 $(objpfx
)libm-test.stmp
: $(ulps-file
) libm-test.inc gen-libm-test.pl \
188 gen-libm-have-vector-test.sh auto-libm-test-out
189 $(make-target-directory
)
190 $(PERL
) gen-libm-test.pl
-u
$< -o
"$(objpfx)"
191 $(SHELL
) gen-libm-have-vector-test.sh
> $(objpfx
)libm-have-vector-test.h
195 libm-test-fast-math-cflags
= -fno-builtin
-D__FAST_MATH__
-DTEST_FAST_MATH
196 libm-test-vec-cflags
= $(libm-test-fast-math-cflags
) -fno-inline \
197 -ffloat-store
-D_OPENMP
=201307 -Wno-unknown-pragmas
199 CFLAGS-test-double-vlen2.c
= $(libm-test-vec-cflags
)
201 CFLAGS-test-double-vlen4.c
= $(libm-test-vec-cflags
)
202 CFLAGS-test-double-vlen4-wrappers.c
= $(double-vlen4-arch-ext-cflags
)
204 CFLAGS-test-double-vlen8.c
= $(libm-test-vec-cflags
)
205 CFLAGS-test-double-vlen8-wrappers.c
= $(double-vlen8-arch-ext-cflags
)
207 CFLAGS-test-float-vlen4.c
= $(libm-test-vec-cflags
)
209 CFLAGS-test-float-vlen8.c
= $(libm-test-vec-cflags
)
210 CFLAGS-test-float-vlen8-wrappers.c
= $(float-vlen8-arch-ext-cflags
)
212 CFLAGS-test-float-vlen16.c
= $(libm-test-vec-cflags
)
213 CFLAGS-test-float-vlen16-wrappers.c
= $(float-vlen16-arch-ext-cflags
)
215 # The no-inline tests use -fsignaling-nans, and thereby use the
216 # versions of classification macros that support sNaNs. The inline
217 # function tests use the versions of classification macros that may
218 # raise spurious exceptions for sNaNs, but also do not test for
219 # exceptions. Thus both versions of the classification macros are
221 libm-test-no-inline-cflags
= -fno-inline
-ffloat-store
-fno-builtin \
223 libm-test-finite-cflags
= $(libm-test-no-inline-cflags
) \
224 -U__FINITE_MATH_ONLY__
-D__FINITE_MATH_ONLY__
=1
225 CFLAGS-test-float.c
= $(libm-test-no-inline-cflags
)
226 CFLAGS-test-float-finite.c
= $(libm-test-finite-cflags
)
227 CFLAGS-test-double.c
= $(libm-test-no-inline-cflags
)
228 CFLAGS-test-double-finite.c
= $(libm-test-finite-cflags
)
229 CFLAGS-test-ldouble.c
= $(libm-test-no-inline-cflags
)
230 CFLAGS-test-ldouble-finite.c
= $(libm-test-finite-cflags
)
231 CFLAGS-test-tgmath.c
= -fno-builtin
232 # The following testcase uses very long lines (>3 million), so it may take a
233 # while to compile it. See: http://llvm.org/bugs/show_bug.cgi?id=14106 and
234 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402
235 CFLAGS-test-tgmath2.c
= -fno-builtin
236 CFLAGS-test-tgmath-ret.c
= -fno-builtin
237 CFLAGS-test-powl.c
= -fno-builtin
239 CFLAGS-test-snan.c
= -fsignaling-nans
240 CPPFLAGS-test-ifloat.c
= -U__LIBC_INTERNAL_MATH_INLINES \
241 $(libm-test-fast-math-cflags
)
242 CPPFLAGS-test-idouble.c
= -U__LIBC_INTERNAL_MATH_INLINES \
243 $(libm-test-fast-math-cflags
)
244 CPPFLAGS-test-ildouble.c
= -U__LIBC_INTERNAL_MATH_INLINES \
245 $(libm-test-fast-math-cflags
)
247 CFLAGS-test-signgam-finite.c
= -ffinite-math-only
248 CFLAGS-test-signgam-finite-c99.c
= -ffinite-math-only
-std
=c99
249 CFLAGS-test-signgam-finite-c11.c
= -ffinite-math-only
-std
=c11
250 CFLAGS-test-signgam-uchar.c
= -std
=c99
251 CFLAGS-test-signgam-uchar-init.c
= -std
=c99
252 CFLAGS-test-signgam-uchar-static.c
= -std
=c99
253 CFLAGS-test-signgam-uchar-init-static.c
= -std
=c99
254 CFLAGS-test-signgam-uint.c
= -std
=c99
255 CFLAGS-test-signgam-uint-init.c
= -std
=c99
256 CFLAGS-test-signgam-uint-static.c
= -std
=c99
257 CFLAGS-test-signgam-uint-init-static.c
= -std
=c99
258 CFLAGS-test-signgam-ullong.c
= -std
=c99
259 CFLAGS-test-signgam-ullong-init.c
= -std
=c99
260 CFLAGS-test-signgam-ullong-static.c
= -std
=c99
261 CFLAGS-test-signgam-ullong-init-static.c
= -std
=c99
263 CFLAGS-test-math-isinff.
cc = -std
=gnu
++11
265 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
266 # for error handling in the -lm functions.
267 install-lib
+= libieee.a
268 non-lib.a
+= libieee.a
269 extra-objs
+= libieee.a ieee-math.o
273 generated
+= $(addsuffix .c
,$(call type-foreach
,$(gen-libm-calls
))) \
274 gen-libm-templates.stmp
276 # Create wrappers in the math build directory.
277 $(objpfx
)gen-libm-templates.stmp
:
278 for gcall in
$(gen-libm-calls
); do \
279 func
=$${gcall
%F
*}$${gcall
#*F}; \
280 for type in
$(foreach t
,$(types
),$(t
)__
$(type-
$(t
)-suffix)); do \
283 file
=$(objpfx
)$${gcall
%F
*}$${suff}$${gcall
#*F}.c; \
285 echo
"#include <math-type-macros-$${type}.h>"; \
286 echo
"#include <$${func}_template.c>"; \
292 # Add dependency to ensure the generator runs prior.
293 $(foreach t
, $(call type-foreach
, $(gen-libm-calls
)), \
294 $(objpfx
)$(t
).c
): $(objpfx
)gen-libm-templates.stmp
297 # This must come after the inclusion of sysdeps Makefiles via Rules.
298 $(addprefix $(objpfx
), $(libm-tests.o
)): $(objpfx
)libm-test.stmp
300 # Run the math programs to automatically generate ULPs files.
303 run-regen-ulps
= $(test-wrapper-env
) \
305 $($*-ENV
) $(rtld-prefix
) $${run}
307 regen-ulps
: $(addprefix $(objpfx
),$(libm-tests
))
308 rm -f
$(objpfx
)ULPs
; rm -f
$(objpfx
)NewUlps
; \
309 cp
$(ulps-file
) $(objpfx
)libm-test-ulps
; \
311 echo
"Regenerating ULPs for $${run}"; \
312 $(run-regen-ulps
) -u
-o
$(objpfx
); \
313 cat
$(objpfx
)ULPs
>> $(objpfx
)libm-test-ulps
; \
316 $(PERL
) gen-libm-test.pl
-o
$(objpfx
) -n
-u
$(objpfx
)libm-test-ulps
; \
317 echo
"Automatic regeneration of ULPs complete."; \
318 echo
"Difference between the current baseline and the new baseline is:";\
319 diff
-urN
$(ulps-file
) $(objpfx
)NewUlps
; \
320 echo
"Copy $(objpfx)NewUlps to $(ulps-file) (relative to source)."
323 @echo
"Automatic regeneration of ULPs requires perl."; \
327 # The generated sysd-rules file defines rules like this for sources
328 # coming from sysdeps/ directories. These rules find the generic sources.
329 define o-iterator-doit
330 $(objpfx
)m_
%$o: s_
%.c
$(before-compile
); $$(compile-command.c
)
332 object-suffixes-left
:= $(all-object-suffixes
)
333 include $(o-iterator
)
336 # This file defines the default _LIB_VERSION variable that controls
337 # the error return conventions for the math functions.
338 CPPFLAGS-s_lib_version.c
:= -D_POSIX_MODE
340 # We don't want the fdlibm code to use the inline math functions,
341 # only the fdlibm code.
342 math-CPPFLAGS
+= -D__NO_MATH_INLINES
-D__LIBC_INTERNAL_MATH_INLINES
344 ifneq ($(long-double-fcts
),yes
)
345 # The `double' and `long double' types are the same on this machine.
346 # We won't compile the `long double' code at all. Tell the `double' code
347 # to define aliases for the `FUNCl' names. To avoid type conflicts in
348 # defining those aliases, tell <math.h> to declare the `FUNCl' names with
349 # `double' instead of `long double'.
350 math-CPPFLAGS
+= -DNO_LONG_DOUBLE
-D_Mlong_double_
=double
353 # These files quiet sNaNs in a way that is optimized away without
355 CFLAGS-s_modf.c
+= -fsignaling-nans
356 CFLAGS-s_modff.c
+= -fsignaling-nans
357 CFLAGS-s_modfl.c
+= -fsignaling-nans
359 # The -lieee library is actually an object file.
360 # The module just defines the _LIB_VERSION_ variable.
361 # It's not a library to make sure it is linked in instead of s_lib_version.o.
362 $(objpfx
)libieee.a
: $(objpfx
)ieee-math.o
364 $(patsubst %/,cd
% &&,$(objpfx
)) \
367 $(addprefix $(objpfx
),\
368 $(filter-out $(tests-static
) $(libm-vec-tests
),$(tests
))): $(libm
)
369 $(addprefix $(objpfx
),$(tests-static
)): $(objpfx
)libm.a
370 $(addprefix $(objpfx
), $(libm-vec-tests
)): $(objpfx
)%: $(objpfx
)%-wrappers.o \
373 gmp-objs
= $(patsubst %,$(common-objpfx
)stdlib
/%.o
,\
374 add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
375 lshift rshift mp_clz_tab udiv_qrnnd inlines \
376 $(gmp-sysdep_routines
))
377 $(objpfx
)atest-exp
: $(gmp-objs
)
378 $(objpfx
)atest-sincos
: $(gmp-objs
)
379 $(objpfx
)atest-exp2
: $(gmp-objs
)
380 $(objpfx
)test-fenv-tls
: $(shared-thread-library
)