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 bits
/iscanonical.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 fegetmode \
47 # Wrappers for these functions generated per type using a file named
48 # <func>_template.c and the appropriate math-type-macros-<TYPE>.h.
49 gen-libm-calls
= cargF conjF cimagF crealF cabsF s_cacosF \
50 s_cacoshF s_ccosF s_ccoshF s_casinF s_csinF s_casinhF \
51 k_casinhF s_csinhF k_casinhF s_csinhF s_catanhF s_catanF \
52 s_ctanF s_ctanhF s_cexpF s_clogF s_cprojF s_csqrtF \
53 s_cpowF s_clog10F s_fdimF s_nextdownF s_fmaxF s_fminF \
57 e_acosF e_acoshF e_asinF e_atan2F e_atanhF e_coshF e_expF e_fmodF \
58 e_hypotF e_j0F e_j1F e_jnF e_lgammaF_r e_logF e_log10F e_powF \
59 e_rem_pio2F e_remainderF e_scalbF e_sinhF e_sqrtF e_gammaF_r \
61 k_cosF k_sinF k_tanF s_asinhF s_atanF s_cbrtF \
62 s_ceilF s_cosF s_erfF s_expm1F s_fabsF \
63 s_floorF s_log1pF w_log1pF s_logbF \
64 s_nextafterF s_nexttowardF s_rintF s_scalblnF w_scalblnF \
65 s_significandF s_sinF s_tanF s_tanhF w_acosF w_acoshF w_asinF \
66 w_atan2F w_atanhF w_coshF w_expF w_exp2F w_exp10F w_fmodF \
67 w_tgammaF w_hypotF w_j0F w_j1F w_jnF w_lgammaF w_lgammaF_r \
68 w_logF w_log10F w_powF w_remainderF w_scalbF w_sinhF w_sqrtF \
70 s_fpclassifyF s_truncF \
71 s_remquoF e_log2F e_exp2F s_roundF s_nearbyintF s_sincosF \
72 s_fmaF s_lrintF s_llrintF s_lroundF s_llroundF e_exp10F w_log2F \
73 s_issignalingF
$(calls
:s_
%=m_
%) x2y2m1F \
74 gamma_productF lgamma_negF lgamma_productF \
75 s_nextupF
$(gen-libm-calls
)
77 libm-compat-calls-ldouble-yes
= w_lgamma_compatl k_standardl
78 libm-compat-calls
= w_lgamma_compatf w_lgamma_compat k_standard k_standardf \
79 $(libm-compat-calls-ldouble-
$(long-double-fcts
))
82 # Type specific routine support.
84 # The following three variables control what is included for each type:
86 # type-floatN-suffix = The suffix of the type
87 # type-floatN-routines = Type specific support objects
88 # type-floatN-yes = If the type is supported, evaluates to floatN
90 # Finally, note that types is an intentionally recursive variable.
91 # We only know the full set of supported types for the target machine
92 # after the Rules makefile has been parsed.
93 types
= $(type-ldouble-
$(long-double-fcts
)) double float
96 type-ldouble-suffix
:= l
97 type-ldouble-routines
:= t_sincosl k_sincosl s_iscanonicall
98 type-ldouble-yes
:= ldouble
101 type-double-suffix
:=
102 type-double-routines
:= branred doasin dosincos halfulp mpa mpatan2 \
103 mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
104 slowpow sincostab k_rem_pio2
107 type-float-suffix
:= f
108 type-float-routines
:= k_rem_pio2f
111 # Apply suffix to each type in arg 1
112 type-foreach
= $(foreach t
,$(types
),$(subst F
,$(type-
$(t
)-suffix),$(1)))
114 libm-routines
= $(strip $(libm-support
) $(libm-compat-calls
) \
115 $(call type-foreach
, $(libm-calls
)) \
116 $(foreach t
, $(types
), $(type-
$(t
)-routines
))) \
118 # These functions are in libc instead of libm because __printf_fp
119 # calls them, so any program using printf will need them linked in,
120 # and we don't want to have to link every program with -lm.
121 # In libm-calls (above), list m_foo in place of s_foo for any
122 # routine that should be compiled separately for its libc and libm versions.
123 calls
= s_isinfF s_isnanF s_finiteF s_copysignF s_modfF s_scalbnF s_frexpF \
124 s_signbitF
$(gen-calls
)
126 generated
+= $(foreach s
,.c .S
,$(call type-foreach
, $(calls
:s_
%=m_
%$(s
))))
127 routines
= $(call type-foreach
, $(calls
))
129 ifeq ($(build-mathvec
),yes
)
130 # We need to install libm.so as linker script
131 # for more comfortable use of vector math library.
132 install-lib-ldscripts
:= libm.so
133 install_subdir
: $(inst_libdir
)/libm.so
134 $(inst_libdir
)/libm.so
: $(common-objpfx
)format.lds \
138 (echo
'/* GNU ld script'; echo
'*/';\
140 echo
'GROUP ( $(slibdir)/libm.so$(libm.so-version) ' \
141 'AS_NEEDED ( $(libdir)/libmvec_nonshared.a $(slibdir)/libmvec.so$(libmvec.so-version) ) )' \
146 # Rules for the test suite.
147 tests
= test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
148 test-misc test-fpucw test-fpucw-ieee tst-definitions test-tgmath \
149 test-tgmath-ret bug-nextafter bug-nexttoward bug-tgmath1 \
150 test-tgmath-int test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan \
151 test-fenv-tls test-fenv-preserve test-fenv-return test-fenvinline \
152 test-nearbyint-except test-fenv-clear test-signgam-finite \
153 test-signgam-finite-c99 test-signgam-finite-c11 \
154 test-nearbyint-except-2 test-signgam-uchar test-signgam-uchar-init \
155 test-signgam-uint test-signgam-uint-init test-signgam-ullong \
156 test-signgam-ullong-init test-nan-overflow test-nan-payload \
157 test-fexcept test-fexcept-traps test-fesetexcept \
158 test-fesetexcept-traps test-fetestexceptflag test-femode \
159 test-femode-traps test-iszero-excess-precision
$(tests-static
)
160 tests-static
= test-fpucw-static test-fpucw-ieee-static \
161 test-signgam-uchar-static test-signgam-uchar-init-static \
162 test-signgam-uint-static test-signgam-uint-init-static \
163 test-signgam-ullong-static test-signgam-ullong-init-static
166 tests
+= test-math-isinff
170 libm-vec-tests
= $(addprefix test-
,$(libmvec-tests
))
172 libm-tests
= $(foreach t
,$(types
),test-
$(t
) test-
$(t
)-finite test-i
$(t
)) \
175 libm-tests.o
= $(addsuffix .o
,$(libm-tests
))
177 tests
+= $(libm-tests
)
178 libm-vec-test-wrappers
= $(addsuffix -wrappers
, $(libm-vec-tests
))
179 test-extras
+= $(libm-vec-test-wrappers
)
180 extra-test-objs
+= $(addsuffix .o
, $(libm-vec-test-wrappers
))
181 libm-tests-generated
= libm-test-ulps.h libm-have-vector-test.h libm-test.c
182 generated
+= $(libm-tests-generated
) libm-test.stmp
184 # This is needed for dependencies
185 before-compile
+= $(objpfx
)libm-test.c
187 ulps-file
= $(firstword $(wildcard $(sysdirs
:%=%/libm-test-ulps
)))
189 $(addprefix $(objpfx
), $(libm-tests-generated
)): $(objpfx
)libm-test.stmp
191 $(objpfx
)libm-test.stmp
: $(ulps-file
) libm-test.inc gen-libm-test.pl \
192 gen-libm-have-vector-test.sh auto-libm-test-out
193 $(make-target-directory
)
194 $(PERL
) gen-libm-test.pl
-u
$< -o
"$(objpfx)"
195 $(SHELL
) gen-libm-have-vector-test.sh
> $(objpfx
)libm-have-vector-test.h
199 libm-test-fast-math-cflags
= -fno-builtin
-D__FAST_MATH__
-DTEST_FAST_MATH
200 libm-test-vec-cflags
= $(libm-test-fast-math-cflags
) -fno-inline \
201 -ffloat-store
-D_OPENMP
=201307 -Wno-unknown-pragmas
203 CFLAGS-test-double-vlen2.c
= $(libm-test-vec-cflags
)
205 CFLAGS-test-double-vlen4.c
= $(libm-test-vec-cflags
)
206 CFLAGS-test-double-vlen4-wrappers.c
= $(double-vlen4-arch-ext-cflags
)
208 CFLAGS-test-double-vlen8.c
= $(libm-test-vec-cflags
)
209 CFLAGS-test-double-vlen8-wrappers.c
= $(double-vlen8-arch-ext-cflags
)
211 CFLAGS-test-float-vlen4.c
= $(libm-test-vec-cflags
)
213 CFLAGS-test-float-vlen8.c
= $(libm-test-vec-cflags
)
214 CFLAGS-test-float-vlen8-wrappers.c
= $(float-vlen8-arch-ext-cflags
)
216 CFLAGS-test-float-vlen16.c
= $(libm-test-vec-cflags
)
217 CFLAGS-test-float-vlen16-wrappers.c
= $(float-vlen16-arch-ext-cflags
)
219 # The no-inline tests use -fsignaling-nans, and thereby use the
220 # versions of classification macros that support sNaNs. The inline
221 # function tests use the versions of classification macros that may
222 # raise spurious exceptions for sNaNs, but also do not test for
223 # exceptions. Thus both versions of the classification macros are
225 libm-test-no-inline-cflags
= -fno-inline
-ffloat-store
-fno-builtin \
227 libm-test-finite-cflags
= $(libm-test-no-inline-cflags
) \
228 -U__FINITE_MATH_ONLY__
-D__FINITE_MATH_ONLY__
=1
229 CFLAGS-test-float.c
= $(libm-test-no-inline-cflags
)
230 CFLAGS-test-float-finite.c
= $(libm-test-finite-cflags
)
231 CFLAGS-test-double.c
= $(libm-test-no-inline-cflags
)
232 CFLAGS-test-double-finite.c
= $(libm-test-finite-cflags
)
233 CFLAGS-test-ldouble.c
= $(libm-test-no-inline-cflags
)
234 CFLAGS-test-ldouble-finite.c
= $(libm-test-finite-cflags
)
235 CFLAGS-test-tgmath.c
= -fno-builtin
236 # The following testcase uses very long lines (>3 million), so it may take a
237 # while to compile it. See: http://llvm.org/bugs/show_bug.cgi?id=14106 and
238 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402
239 CFLAGS-test-tgmath2.c
= -fno-builtin
240 CFLAGS-test-tgmath-ret.c
= -fno-builtin
241 CFLAGS-test-powl.c
= -fno-builtin
243 CFLAGS-test-snan.c
= -fsignaling-nans
244 CPPFLAGS-test-ifloat.c
= -U__LIBC_INTERNAL_MATH_INLINES \
245 $(libm-test-fast-math-cflags
)
246 CPPFLAGS-test-idouble.c
= -U__LIBC_INTERNAL_MATH_INLINES \
247 $(libm-test-fast-math-cflags
)
248 CPPFLAGS-test-ildouble.c
= -U__LIBC_INTERNAL_MATH_INLINES \
249 $(libm-test-fast-math-cflags
)
251 CFLAGS-test-signgam-finite.c
= -ffinite-math-only
252 CFLAGS-test-signgam-finite-c99.c
= -ffinite-math-only
-std
=c99
253 CFLAGS-test-signgam-finite-c11.c
= -ffinite-math-only
-std
=c11
254 CFLAGS-test-signgam-uchar.c
= -std
=c99
255 CFLAGS-test-signgam-uchar-init.c
= -std
=c99
256 CFLAGS-test-signgam-uchar-static.c
= -std
=c99
257 CFLAGS-test-signgam-uchar-init-static.c
= -std
=c99
258 CFLAGS-test-signgam-uint.c
= -std
=c99
259 CFLAGS-test-signgam-uint-init.c
= -std
=c99
260 CFLAGS-test-signgam-uint-static.c
= -std
=c99
261 CFLAGS-test-signgam-uint-init-static.c
= -std
=c99
262 CFLAGS-test-signgam-ullong.c
= -std
=c99
263 CFLAGS-test-signgam-ullong-init.c
= -std
=c99
264 CFLAGS-test-signgam-ullong-static.c
= -std
=c99
265 CFLAGS-test-signgam-ullong-init-static.c
= -std
=c99
267 CFLAGS-test-math-isinff.
cc = -std
=gnu
++11
269 CFLAGS-test-iszero-excess-precision.c
= -fexcess-precision
=standard
271 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
272 # for error handling in the -lm functions.
273 install-lib
+= libieee.a
274 non-lib.a
+= libieee.a
275 extra-objs
+= libieee.a ieee-math.o
279 gen-all-calls
= $(gen-libm-calls
) $(gen-calls
)
281 generated
+= $(addsuffix .c
,$(call type-foreach
,$(gen-all-calls
))) \
282 gen-libm-templates.stmp
284 # Create wrappers in the math build directory.
285 $(objpfx
)gen-libm-templates.stmp
: Makefile
286 $(make-target-directory
)
287 for gcall in
$(gen-all-calls
); do \
288 func
=$${gcall
%F
*}$${gcall
#*F}; \
289 for type in
$(foreach t
,$(types
),$(t
)__
$(type-
$(t
)-suffix)); do \
292 file
=$(objpfx
)$${gcall
%F
*}$${suff}$${gcall
#*F}.c; \
294 echo
"#include <math-type-macros-$${type}.h>"; \
295 echo
"#include <$${func}_template.c>"; \
301 # Add dependency to ensure the generator runs prior.
302 $(foreach t
, $(call type-foreach
, $(gen-all-calls
)), \
303 $(objpfx
)$(t
).c
): $(objpfx
)gen-libm-templates.stmp
306 # This must come after the inclusion of sysdeps Makefiles via Rules.
307 $(addprefix $(objpfx
), $(libm-tests.o
)): $(objpfx
)libm-test.stmp
309 # Run the math programs to automatically generate ULPs files.
312 run-regen-ulps
= $(test-wrapper-env
) \
314 $($*-ENV
) $(rtld-prefix
) $${run}
316 regen-ulps
: $(addprefix $(objpfx
),$(libm-tests
))
317 rm -f
$(objpfx
)ULPs
; rm -f
$(objpfx
)NewUlps
; \
318 cp
$(ulps-file
) $(objpfx
)libm-test-ulps
; \
320 echo
"Regenerating ULPs for $${run}"; \
321 $(run-regen-ulps
) -u
-o
$(objpfx
); \
322 cat
$(objpfx
)ULPs
>> $(objpfx
)libm-test-ulps
; \
325 $(PERL
) gen-libm-test.pl
-o
$(objpfx
) -n
-u
$(objpfx
)libm-test-ulps
; \
326 echo
"Automatic regeneration of ULPs complete."; \
327 echo
"Difference between the current baseline and the new baseline is:";\
328 diff
-urN
$(ulps-file
) $(objpfx
)NewUlps
; \
329 echo
"Copy $(objpfx)NewUlps to $(ulps-file) (relative to source)."
332 @echo
"Automatic regeneration of ULPs requires perl."; \
336 # The generated sysd-rules file defines rules like this for sources
337 # coming from sysdeps/ directories. These rules find the generic sources.
338 define o-iterator-doit
339 $(objpfx
)m_
%$o: s_
%.c
$(before-compile
); $$(compile-command.c
)
341 object-suffixes-left
:= $(all-object-suffixes
)
342 include $(o-iterator
)
344 # Likewise, for those generated files shared with libc.
345 define o-iterator-doit
346 $(objpfx
)m_
%$o: $(objpfx
)s_
%.c
$(before-compile
); $$(compile-command.c
)
348 object-suffixes-left
:= $(all-object-suffixes
)
349 include $(o-iterator
)
351 # This file defines the default _LIB_VERSION variable that controls
352 # the error return conventions for the math functions.
353 CPPFLAGS-s_lib_version.c
:= -D_POSIX_MODE
355 # We don't want the fdlibm code to use the inline math functions,
356 # only the fdlibm code.
357 math-CPPFLAGS
+= -D__NO_MATH_INLINES
-D__LIBC_INTERNAL_MATH_INLINES
359 ifneq ($(long-double-fcts
),yes
)
360 # The `double' and `long double' types are the same on this machine.
361 # We won't compile the `long double' code at all. Tell the `double' code
362 # to define aliases for the `FUNCl' names. To avoid type conflicts in
363 # defining those aliases, tell <math.h> to declare the `FUNCl' names with
364 # `double' instead of `long double'.
365 math-CPPFLAGS
+= -DNO_LONG_DOUBLE
-D_Mlong_double_
=double
368 # These files quiet sNaNs in a way that is optimized away without
370 CFLAGS-s_modf.c
+= -fsignaling-nans
371 CFLAGS-s_modff.c
+= -fsignaling-nans
372 CFLAGS-s_modfl.c
+= -fsignaling-nans
374 # The -lieee library is actually an object file.
375 # The module just defines the _LIB_VERSION_ variable.
376 # It's not a library to make sure it is linked in instead of s_lib_version.o.
377 $(objpfx
)libieee.a
: $(objpfx
)ieee-math.o
379 $(patsubst %/,cd
% &&,$(objpfx
)) \
382 $(addprefix $(objpfx
),\
383 $(filter-out $(tests-static
) $(libm-vec-tests
),$(tests
))): $(libm
)
384 $(addprefix $(objpfx
),$(tests-static
)): $(objpfx
)libm.a
385 $(addprefix $(objpfx
), $(libm-vec-tests
)): $(objpfx
)%: $(objpfx
)%-wrappers.o \
388 gmp-objs
= $(patsubst %,$(common-objpfx
)stdlib
/%.o
,\
389 add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
390 lshift rshift mp_clz_tab udiv_qrnnd inlines \
391 $(gmp-sysdep_routines
))
392 $(objpfx
)atest-exp
: $(gmp-objs
)
393 $(objpfx
)atest-sincos
: $(gmp-objs
)
394 $(objpfx
)atest-exp2
: $(gmp-objs
)
395 $(objpfx
)test-fenv-tls
: $(shared-thread-library
)