1 # Copyright (C) 1996-2013 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.
22 # Installed header files.
23 headers := math.h bits/mathcalls.h bits/mathinline.h bits/huge_val.h \
24 bits/huge_valf.h bits/huge_vall.h bits/inf.h bits/nan.h \
25 fpu_control.h complex.h bits/cmathcalls.h fenv.h \
26 bits/fenv.h bits/fenvinline.h bits/mathdef.h tgmath.h \
30 aux := setfpucw fpu_control
32 # Build the -lm library.
35 extra-libs-others = $(extra-libs)
37 libm-support = k_standard s_lib_version s_matherr s_signgam \
38 fclrexcpt fgetexcptflg fraiseexcpt fsetexcptflg \
39 ftestexcept fegetround fesetround fegetenv feholdexcpt \
40 fesetenv feupdateenv t_exp fedisblxcpt feenablxcpt \
42 libm-calls = e_acos e_acosh e_asin e_atan2 e_atanh e_cosh e_exp e_fmod \
43 e_hypot e_j0 e_j1 e_jn e_lgamma_r e_log e_log10 e_pow \
44 e_rem_pio2 e_remainder e_scalb e_sinh e_sqrt e_gamma_r \
46 k_cos k_rem_pio2 k_sin k_tan s_asinh s_atan s_cbrt \
47 s_ceil s_cos s_erf s_expm1 s_fabs \
48 s_floor s_log1p s_logb \
49 s_nextafter s_nexttoward s_rint s_scalbln \
50 s_significand s_sin s_tan s_tanh w_acos w_acosh w_asin \
51 w_atan2 w_atanh w_cosh w_drem w_exp w_exp2 w_exp10 w_fmod \
52 w_tgamma w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r \
53 w_log w_log10 w_pow w_remainder w_scalb w_sinh w_sqrt \
55 s_fpclassify s_fmax s_fmin s_fdim s_nan s_trunc \
56 s_remquo e_log2 e_exp2 s_round s_nearbyint s_sincos \
57 conj cimag creal cabs carg s_cexp s_csinh s_ccosh s_clog \
58 s_catan s_casin s_ccos s_csin s_ctan s_ctanh s_cacos \
59 s_casinh s_cacosh s_catanh s_csqrt s_cpow s_cproj s_clog10 \
60 s_fma s_lrint s_llrint s_lround s_llround e_exp10 w_log2 \
61 s_isinf_ns s_issignaling $(calls:s_%=m_%) x2y2m1 k_casinh \
66 dbl-only-routines := branred doasin dosincos halfulp mpa mpatan2 \
67 mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
69 libm-routines = $(strip $(libm-support) $(libm-calls) \
70 $(patsubst %_rf,%f_r,$(libm-calls:=f)) \
71 $(long-m-$(long-double-fcts))) \
73 long-m-routines = $(patsubst %_rl,%l_r,$(libm-calls:=l))
74 long-m-support = t_sincosl k_sincosl
75 long-m-yes = $(long-m-routines) $(long-m-support)
77 # These functions are in libc instead of libm because __printf_fp
78 # calls them, so any program using printf will need them linked in,
79 # and we don't want to have to link every program with -lm.
80 # In libm-calls (above), list m_foo in place of s_foo for any
81 # routine that should be compiled separately for its libc and libm versions.
82 calls = s_isinf s_isnan s_finite s_copysign s_modf s_scalbn s_frexp s_ldexp \
84 generated += $(foreach s,.c .S l.c l.S f.c f.S,$(calls:s_%=m_%$s))
85 routines = $(calls) $(calls:=f) $(long-c-$(long-double-fcts))
86 long-c-yes = $(calls:=l)
88 # Rules for the test suite.
89 tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
90 test-misc test-fpucw tst-definitions test-tgmath test-tgmath-ret \
91 bug-nextafter bug-nexttoward bug-tgmath1 test-tgmath-int \
92 test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan
93 # We do the `long double' tests only if this data type is available and
94 # distinct from `double'.
95 test-longdouble-yes = test-ldouble test-ildoubl
98 libm-tests = test-float test-double $(test-longdouble-$(long-double-fcts)) \
99 test-ifloat test-idouble
100 libm-tests.o = $(addsuffix .o,$(libm-tests))
102 tests += $(libm-tests)
103 libm-tests-generated = libm-test-ulps.h libm-test.c
104 generated += $(libm-tests-generated) libm-test.stmp
106 # This is needed for dependencies
107 before-compile += $(objpfx)libm-test.c
109 ulps-file = $(firstword $(wildcard $(sysdirs:%=%/libm-test-ulps)))
111 $(addprefix $(objpfx), $(libm-tests-generated)): $(objpfx)libm-test.stmp
113 $(objpfx)libm-test.stmp: $(ulps-file) libm-test.inc gen-libm-test.pl
114 $(make-target-directory)
115 $(PERL) gen-libm-test.pl -u $< -o "$(objpfx)"
118 $(objpfx)test-float.o: $(objpfx)libm-test.stmp
119 $(objpfx)test-ifloat.o: $(objpfx)libm-test.stmp
120 $(objpfx)test-double.o: $(objpfx)libm-test.stmp
121 $(objpfx)test-idouble.o: $(objpfx)libm-test.stmp
122 $(objpfx)test-ldouble.o: $(objpfx)libm-test.stmp
123 $(objpfx)test-ildoubl.o: $(objpfx)libm-test.stmp
126 CFLAGS-test-float.c = -fno-inline -ffloat-store -fno-builtin -frounding-math
127 CFLAGS-test-double.c = -fno-inline -ffloat-store -fno-builtin -frounding-math
128 CFLAGS-test-ldouble.c = -fno-inline -ffloat-store -fno-builtin -frounding-math
129 CFLAGS-test-tgmath.c = -fno-builtin
130 # The following testcase uses very long lines (>3 million), so it may take a
131 # while to compile it. See: http://llvm.org/bugs/show_bug.cgi?id=14106 and
132 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402
133 CFLAGS-test-tgmath2.c = -fno-builtin
134 CFLAGS-test-tgmath-ret.c = -fno-builtin
135 CFLAGS-test-powl.c = -fno-builtin
136 CFLAGS-test-test-fenv.c = -frounding-math
137 CFLAGS-test-misc.c = -frounding-math
138 CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
139 -DTEST_FAST_MATH -fno-builtin -frounding-math
140 CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
141 -DTEST_FAST_MATH -fno-builtin -frounding-math
142 CPPFLAGS-test-ildoubl.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
143 -DTEST_FAST_MATH -fno-builtin -frounding-math
146 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
147 # for error handling in the -lm functions.
148 install-lib += libieee.a
149 non-lib.a += libieee.a
150 extra-objs += libieee.a ieee-math.o
155 # Run the math programs to automatically generate ULPs files.
158 run-regen-ulps = $(test-wrapper-env) \
159 GCONV_PATH=$(common-objpfx)iconvdata LC_ALL=C \
160 $($*-ENV) $(rtld-prefix) $${run}
162 regen-ulps: $(addprefix $(objpfx),$(libm-tests))
163 rm -f $(objpfx)ULPs; rm -f $(objpfx)NewUlps; \
164 cp $(ulps-file) $(objpfx)libm-test-ulps; \
166 echo "Regenerating ULPs for $${run}"; \
167 $(run-regen-ulps) -u -o $(objpfx); \
168 cat $(objpfx)ULPs >> $(objpfx)libm-test-ulps; \
171 $(PERL) gen-libm-test.pl -o $(objpfx) -n -u $(objpfx)libm-test-ulps; \
172 echo "Automatic regeneration of ULPs complete."; \
173 echo "Difference between the current baseline and the new baseline is:";\
174 diff -urN $(ulps-file) $(objpfx)NewUlps; \
175 echo "Copy $(objpfx)NewUlps to $(ulps-file) (relative to source)."
178 @echo "Automatic regeneration of ULPs requires perl."; \
182 # The generated sysd-rules file defines rules like this for sources
183 # coming from sysdeps/ directories. These rules find the generic sources.
184 define o-iterator-doit
185 $(objpfx)m_%$o: s_%.c $(before-compile); $$(compile-command.c)
187 object-suffixes-left := $(all-object-suffixes)
188 include $(o-iterator)
191 # This file defines the default _LIB_VERSION variable that controls
192 # the error return conventions for the math functions.
193 CPPFLAGS-s_lib_version.c := -D_POSIX_MODE
195 # We don't want the fdlibm code to use the inline math functions,
196 # only the fdlibm code.
197 math-CPPFLAGS += -D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES
199 ifneq ($(long-double-fcts),yes)
200 # The `double' and `long double' types are the same on this machine.
201 # We won't compile the `long double' code at all. Tell the `double' code
202 # to define aliases for the `FUNCl' names. To avoid type conflicts in
203 # defining those aliases, tell <math.h> to declare the `FUNCl' names with
204 # `double' instead of `long double'.
205 math-CPPFLAGS += -DNO_LONG_DOUBLE -D_Mlong_double_=double
208 # The fdlibm code generates a lot of these warnings but is otherwise clean.
209 override CFLAGS += -Wno-uninitialized
211 # The -lieee library is actually an object file.
212 # The module just defines the _LIB_VERSION_ variable.
213 # It's not a library to make sure it is linked in instead of s_lib_version.o.
214 $(objpfx)libieee.a: $(objpfx)ieee-math.o
216 $(patsubst %/,cd % &&,$(objpfx)) \
219 ifeq ($(build-shared),yes)
220 $(addprefix $(objpfx),$(tests)): $(objpfx)libm.so$(libm.so-version)
222 $(addprefix $(objpfx),$(tests)): $(objpfx)libm.a
225 gmp-objs = $(patsubst %,$(common-objpfx)stdlib/%.o,\
226 add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
227 lshift rshift mp_clz_tab udiv_qrnnd inlines \
228 $(gmp-sysdep_routines))
229 $(objpfx)atest-exp: $(gmp-objs)
230 $(objpfx)atest-sincos: $(gmp-objs)
231 $(objpfx)atest-exp2: $(gmp-objs)