math/Makefile

   1 # Copyright (C) 1996-2016 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   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.
   8
   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.
  13
  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/>.
  17
  18 # Makefile for the math library.
  19
  20 subdir          := math
  21
  22 include ../Makeconfig
  23
  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
  31
  32 # FPU support code.
  33 aux             := setfpucw fpu_control
  34
  35 # Build the -lm library.
  36
  37 extra-libs      := libm
  38 extra-libs-others = $(extra-libs)
  39
  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
  45
  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
  53
  54 libm-calls =                                                              \
  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      \
  58         e_ilogbF                                                          \
  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      \
  67         w_ilogbF                                                          \
  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)
  74
  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))
  78
  79
  80 # Type specific routine support.
  81 #
  82 # The following three variables control what is included for each type:
  83 #
  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
  87 #
  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
  92
  93 # long double support
  94 type-ldouble-suffix := l
  95 type-ldouble-routines := t_sincosl k_sincosl
  96 type-ldouble-yes := ldouble
  97
  98 # double support
  99 type-double-suffix :=
 100 type-double-routines := branred doasin dosincos halfulp mpa mpatan2     \
 101                        mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
 102                        slowpow sincostab
 103
 104 # float support
 105 type-float-suffix := f
 106 type-float-routines :=
 107
 108
 109 # Apply suffix to each type in arg 1
 110 type-foreach = $(foreach t,$(types),$(subst F,$(type-$(t)-suffix),$(1)))
 111
 112 libm-routines = $(strip $(libm-support) $(libm-compat-calls)            \
 113                         $(call type-foreach, $(libm-calls))             \
 114                         $(foreach t, $(types), $(type-$(t)-routines)))  \
 115
 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 \
 122         s_ldexpF s_signbitF
 123 generated += $(foreach s,.c .S,$(call type-foreach, $(calls:s_%=m_%$(s))))
 124 routines = $(call type-foreach, $(calls))
 125
 126 ifeq ($(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 \
 132                         $(libm) \
 133                         $(libmvec) \
 134                         $(+force)
 135         (echo '/* GNU ld script'; echo '*/';\
 136          cat $<; \
 137          echo 'GROUP ( $(slibdir)/libm.so$(libm.so-version) ' \
 138               'AS_NEEDED ( $(libdir)/libmvec_nonshared.a $(slibdir)/libmvec.so$(libmvec.so-version) ) )' \
 139         ) > $@.new
 140         mv -f $@.new $@
 141 endif
 142
 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 $(tests-static)
 156 tests-static = test-fpucw-static test-fpucw-ieee-static \
 157                test-signgam-uchar-static test-signgam-uchar-init-static \
 158                test-signgam-uint-static test-signgam-uint-init-static \
 159                test-signgam-ullong-static test-signgam-ullong-init-static
 160
 161 ifneq (,$(CXX))
 162 tests += test-math-isinff
 163 endif
 164
 165 ifneq (no,$(PERL))
 166 libm-vec-tests = $(addprefix test-,$(libmvec-tests))
 167
 168 libm-tests = $(foreach t,$(types),test-$(t) test-$(t)-finite test-i$(t)) \
 169              $(libm-vec-tests)
 170
 171 libm-tests.o = $(addsuffix .o,$(libm-tests))
 172
 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
 179
 180 # This is needed for dependencies
 181 before-compile += $(objpfx)libm-test.c
 182
 183 ulps-file = $(firstword $(wildcard $(sysdirs:%=%/libm-test-ulps)))
 184
 185 $(addprefix $(objpfx), $(libm-tests-generated)): $(objpfx)libm-test.stmp
 186
 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
 192         @echo > $@
 193 endif
 194
 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
 198
 199 CFLAGS-test-double-vlen2.c = $(libm-test-vec-cflags)
 200
 201 CFLAGS-test-double-vlen4.c = $(libm-test-vec-cflags)
 202 CFLAGS-test-double-vlen4-wrappers.c = $(double-vlen4-arch-ext-cflags)
 203
 204 CFLAGS-test-double-vlen8.c = $(libm-test-vec-cflags)
 205 CFLAGS-test-double-vlen8-wrappers.c = $(double-vlen8-arch-ext-cflags)
 206
 207 CFLAGS-test-float-vlen4.c = $(libm-test-vec-cflags)
 208
 209 CFLAGS-test-float-vlen8.c = $(libm-test-vec-cflags)
 210 CFLAGS-test-float-vlen8-wrappers.c = $(float-vlen8-arch-ext-cflags)
 211
 212 CFLAGS-test-float-vlen16.c = $(libm-test-vec-cflags)
 213 CFLAGS-test-float-vlen16-wrappers.c = $(float-vlen16-arch-ext-cflags)
 214
 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
 220 # validated.
 221 libm-test-no-inline-cflags = -fno-inline -ffloat-store -fno-builtin \
 222                              -fsignaling-nans
 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
 238
 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)
 246
 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
 262
 263 CFLAGS-test-math-isinff.cc = -std=gnu++11
 264
 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
 270
 271 include ../Rules
 272
 273 generated += $(addsuffix .c,$(call type-foreach,$(gen-libm-calls))) \
 274              gen-libm-templates.stmp
 275
 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 \
 281             suff=$${type#*__};                                            \
 282             type=$${type%__*};                                            \
 283             file=$(objpfx)$${gcall%F*}$${suff}$${gcall#*F}.c;             \
 284             (                                                             \
 285               echo "#include <math-type-macros-$${type}.h>";              \
 286               echo "#include <$${func}_template.c>";                      \
 287             ) > $${file};                                                 \
 288           done;                                                           \
 289         done;                                                             \
 290         echo > $(@)
 291
 292 # Add dependency to ensure the generator runs prior.
 293 $(foreach t, $(call type-foreach, $(gen-libm-calls)), \
 294              $(objpfx)$(t).c): $(objpfx)gen-libm-templates.stmp
 295
 296 ifneq (no,$(PERL))
 297 # This must come after the inclusion of sysdeps Makefiles via Rules.
 298 $(addprefix $(objpfx), $(libm-tests.o)): $(objpfx)libm-test.stmp
 299
 300 # Run the math programs to automatically generate ULPs files.
 301 .PHONY: regen-ulps
 302
 303 run-regen-ulps = $(test-wrapper-env) \
 304             $(run-program-env) \
 305             $($*-ENV) $(rtld-prefix) $${run}
 306
 307 regen-ulps: $(addprefix $(objpfx),$(libm-tests))
 308         rm -f $(objpfx)ULPs; rm -f $(objpfx)NewUlps; \
 309         cp $(ulps-file) $(objpfx)libm-test-ulps; \
 310         for run in $^; do \
 311           echo "Regenerating ULPs for $${run}"; \
 312           $(run-regen-ulps) -u -o $(objpfx); \
 313           cat $(objpfx)ULPs >> $(objpfx)libm-test-ulps; \
 314           rm $(objpfx)ULPs; \
 315         done; \
 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)."
 321 else
 322 regen-ulps:
 323         @echo "Automatic regeneration of ULPs requires perl."; \
 324         exit 1;
 325 endif
 326
 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)
 331 endef
 332 object-suffixes-left := $(all-object-suffixes)
 333 include $(o-iterator)
 334
 335
 336 # This file defines the default _LIB_VERSION variable that controls
 337 # the error return conventions for the math functions.
 338 CPPFLAGS-s_lib_version.c := -D_POSIX_MODE
 339
 340 # We don't want the fdlibm code to use the inline math functions,
 341 # only the fdlibm code.
 342 math-CPPFLAGS += -D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES
 343
 344 ifneq ($(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
 351 endif
 352
 353 # These files quiet sNaNs in a way that is optimized away without
 354 # -fsignaling-nans.
 355 CFLAGS-s_modf.c += -fsignaling-nans
 356 CFLAGS-s_modff.c += -fsignaling-nans
 357 CFLAGS-s_modfl.c += -fsignaling-nans
 358
 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
 363         rm -f $@
 364         $(patsubst %/,cd % &&,$(objpfx)) \
 365         $(LN_S) $(<F) $(@F)
 366
 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 \
 371                                                        $(libm) $(libmvec)
 372
 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)