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 fegetmode       \
  45                fesetmode
  46
  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
  54
  55 libm-calls =                                                              \
  56         e_acosF e_acoshF e_asinF e_atan2F e_atanhF e_coshF e_expF e_fmodF \
  57         e_hypotF e_j0F e_j1F e_jnF e_lgammaF_r e_logF e_log10F e_powF     \
  58         e_rem_pio2F e_remainderF e_scalbF e_sinhF e_sqrtF e_gammaF_r      \
  59         e_ilogbF                                                          \
  60         k_cosF k_sinF k_tanF s_asinhF s_atanF s_cbrtF                     \
  61         s_ceilF s_cosF s_erfF s_expm1F s_fabsF                            \
  62         s_floorF s_log1pF w_log1pF s_logbF                                \
  63         s_nextafterF s_nexttowardF s_rintF s_scalblnF w_scalblnF          \
  64         s_significandF s_sinF s_tanF s_tanhF w_acosF w_acoshF w_asinF     \
  65         w_atan2F w_atanhF w_coshF w_expF w_exp2F w_exp10F w_fmodF         \
  66         w_tgammaF w_hypotF w_j0F w_j1F w_jnF w_lgammaF w_lgammaF_r        \
  67         w_logF w_log10F w_powF w_remainderF w_scalbF w_sinhF w_sqrtF      \
  68         w_ilogbF                                                          \
  69         s_fpclassifyF s_nanF s_truncF                                     \
  70         s_remquoF e_log2F e_exp2F s_roundF s_nearbyintF s_sincosF         \
  71         s_fmaF s_lrintF s_llrintF s_lroundF s_llroundF e_exp10F w_log2F   \
  72         s_issignalingF $(calls:s_%=m_%) x2y2m1F                           \
  73         gamma_productF lgamma_negF lgamma_productF                        \
  74         s_nextupF $(gen-libm-calls)
  75
  76 libm-compat-calls-ldouble-yes = w_lgamma_compatl k_standardl
  77 libm-compat-calls = w_lgamma_compatf w_lgamma_compat k_standard k_standardf \
  78                     $(libm-compat-calls-ldouble-$(long-double-fcts))
  79
  80
  81 # Type specific routine support.
  82 #
  83 # The following three variables control what is included for each type:
  84 #
  85 # type-floatN-suffix = The suffix of the type
  86 # type-floatN-routines = Type specific support objects
  87 # type-floatN-yes = If the type is supported, evaluates to floatN
  88 #
  89 # Finally, note that types is an intentionally recursive variable.
  90 # We only know the full set of supported types for the target machine
  91 # after the Rules makefile has been parsed.
  92 types = $(type-ldouble-$(long-double-fcts)) double float
  93
  94 # long double support
  95 type-ldouble-suffix := l
  96 type-ldouble-routines := t_sincosl k_sincosl
  97 type-ldouble-yes := ldouble
  98
  99 # double support
 100 type-double-suffix :=
 101 type-double-routines := branred doasin dosincos halfulp mpa mpatan2     \
 102                        mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
 103                        slowpow sincostab k_rem_pio2
 104
 105 # float support
 106 type-float-suffix := f
 107 type-float-routines := k_rem_pio2f
 108
 109
 110 # Apply suffix to each type in arg 1
 111 type-foreach = $(foreach t,$(types),$(subst F,$(type-$(t)-suffix),$(1)))
 112
 113 libm-routines = $(strip $(libm-support) $(libm-compat-calls)            \
 114                         $(call type-foreach, $(libm-calls))             \
 115                         $(foreach t, $(types), $(type-$(t)-routines)))  \
 116
 117 # These functions are in libc instead of libm because __printf_fp
 118 # calls them, so any program using printf will need them linked in,
 119 # and we don't want to have to link every program with -lm.
 120 # In libm-calls (above), list m_foo in place of s_foo for any
 121 # routine that should be compiled separately for its libc and libm versions.
 122 calls = s_isinfF s_isnanF s_finiteF s_copysignF s_modfF s_scalbnF s_frexpF \
 123         s_signbitF $(gen-calls)
 124 gen-calls = s_ldexpF
 125 generated += $(foreach s,.c .S,$(call type-foreach, $(calls:s_%=m_%$(s))))
 126 routines = $(call type-foreach, $(calls))
 127
 128 ifeq ($(build-mathvec),yes)
 129 # We need to install libm.so as linker script
 130 # for more comfortable use of vector math library.
 131 install-lib-ldscripts := libm.so
 132 install_subdir: $(inst_libdir)/libm.so
 133 $(inst_libdir)/libm.so: $(common-objpfx)format.lds \
 134                         $(libm) \
 135                         $(libmvec) \
 136                         $(+force)
 137         (echo '/* GNU ld script'; echo '*/';\
 138          cat $<; \
 139          echo 'GROUP ( $(slibdir)/libm.so$(libm.so-version) ' \
 140               'AS_NEEDED ( $(libdir)/libmvec_nonshared.a $(slibdir)/libmvec.so$(libmvec.so-version) ) )' \
 141         ) > $@.new
 142         mv -f $@.new $@
 143 endif
 144
 145 # Rules for the test suite.
 146 tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
 147         test-misc test-fpucw test-fpucw-ieee tst-definitions test-tgmath \
 148         test-tgmath-ret bug-nextafter bug-nexttoward bug-tgmath1 \
 149         test-tgmath-int test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan \
 150         test-fenv-tls test-fenv-preserve test-fenv-return test-fenvinline \
 151         test-nearbyint-except test-fenv-clear test-signgam-finite \
 152         test-signgam-finite-c99 test-signgam-finite-c11 \
 153         test-nearbyint-except-2 test-signgam-uchar test-signgam-uchar-init \
 154         test-signgam-uint test-signgam-uint-init test-signgam-ullong \
 155         test-signgam-ullong-init test-nan-overflow test-nan-payload \
 156         test-fexcept test-fexcept-traps test-fesetexcept \
 157         test-fesetexcept-traps test-fetestexceptflag test-femode \
 158         test-femode-traps $(tests-static)
 159 tests-static = test-fpucw-static test-fpucw-ieee-static \
 160                test-signgam-uchar-static test-signgam-uchar-init-static \
 161                test-signgam-uint-static test-signgam-uint-init-static \
 162                test-signgam-ullong-static test-signgam-ullong-init-static
 163
 164 ifneq (,$(CXX))
 165 tests += test-math-isinff
 166 endif
 167
 168 ifneq (no,$(PERL))
 169 libm-vec-tests = $(addprefix test-,$(libmvec-tests))
 170
 171 libm-tests = $(foreach t,$(types),test-$(t) test-$(t)-finite test-i$(t)) \
 172              $(libm-vec-tests)
 173
 174 libm-tests.o = $(addsuffix .o,$(libm-tests))
 175
 176 tests += $(libm-tests)
 177 libm-vec-test-wrappers = $(addsuffix -wrappers, $(libm-vec-tests))
 178 test-extras += $(libm-vec-test-wrappers)
 179 extra-test-objs += $(addsuffix .o, $(libm-vec-test-wrappers))
 180 libm-tests-generated = libm-test-ulps.h libm-have-vector-test.h libm-test.c
 181 generated += $(libm-tests-generated) libm-test.stmp
 182
 183 # This is needed for dependencies
 184 before-compile += $(objpfx)libm-test.c
 185
 186 ulps-file = $(firstword $(wildcard $(sysdirs:%=%/libm-test-ulps)))
 187
 188 $(addprefix $(objpfx), $(libm-tests-generated)): $(objpfx)libm-test.stmp
 189
 190 $(objpfx)libm-test.stmp: $(ulps-file) libm-test.inc gen-libm-test.pl \
 191                          gen-libm-have-vector-test.sh auto-libm-test-out
 192         $(make-target-directory)
 193         $(PERL) gen-libm-test.pl -u $< -o "$(objpfx)"
 194         $(SHELL) gen-libm-have-vector-test.sh > $(objpfx)libm-have-vector-test.h
 195         @echo > $@
 196 endif
 197
 198 libm-test-fast-math-cflags = -fno-builtin -D__FAST_MATH__ -DTEST_FAST_MATH
 199 libm-test-vec-cflags = $(libm-test-fast-math-cflags) -fno-inline \
 200                        -ffloat-store -D_OPENMP=201307 -Wno-unknown-pragmas
 201
 202 CFLAGS-test-double-vlen2.c = $(libm-test-vec-cflags)
 203
 204 CFLAGS-test-double-vlen4.c = $(libm-test-vec-cflags)
 205 CFLAGS-test-double-vlen4-wrappers.c = $(double-vlen4-arch-ext-cflags)
 206
 207 CFLAGS-test-double-vlen8.c = $(libm-test-vec-cflags)
 208 CFLAGS-test-double-vlen8-wrappers.c = $(double-vlen8-arch-ext-cflags)
 209
 210 CFLAGS-test-float-vlen4.c = $(libm-test-vec-cflags)
 211
 212 CFLAGS-test-float-vlen8.c = $(libm-test-vec-cflags)
 213 CFLAGS-test-float-vlen8-wrappers.c = $(float-vlen8-arch-ext-cflags)
 214
 215 CFLAGS-test-float-vlen16.c = $(libm-test-vec-cflags)
 216 CFLAGS-test-float-vlen16-wrappers.c = $(float-vlen16-arch-ext-cflags)
 217
 218 # The no-inline tests use -fsignaling-nans, and thereby use the
 219 # versions of classification macros that support sNaNs.  The inline
 220 # function tests use the versions of classification macros that may
 221 # raise spurious exceptions for sNaNs, but also do not test for
 222 # exceptions.  Thus both versions of the classification macros are
 223 # validated.
 224 libm-test-no-inline-cflags = -fno-inline -ffloat-store -fno-builtin \
 225                              -fsignaling-nans
 226 libm-test-finite-cflags = $(libm-test-no-inline-cflags) \
 227                           -U__FINITE_MATH_ONLY__ -D__FINITE_MATH_ONLY__=1
 228 CFLAGS-test-float.c = $(libm-test-no-inline-cflags)
 229 CFLAGS-test-float-finite.c = $(libm-test-finite-cflags)
 230 CFLAGS-test-double.c = $(libm-test-no-inline-cflags)
 231 CFLAGS-test-double-finite.c = $(libm-test-finite-cflags)
 232 CFLAGS-test-ldouble.c = $(libm-test-no-inline-cflags)
 233 CFLAGS-test-ldouble-finite.c = $(libm-test-finite-cflags)
 234 CFLAGS-test-tgmath.c = -fno-builtin
 235 # The following testcase uses very long lines (>3 million), so it may take a
 236 # while to compile it. See: http://llvm.org/bugs/show_bug.cgi?id=14106 and
 237 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402
 238 CFLAGS-test-tgmath2.c = -fno-builtin
 239 CFLAGS-test-tgmath-ret.c = -fno-builtin
 240 CFLAGS-test-powl.c = -fno-builtin
 241
 242 CFLAGS-test-snan.c = -fsignaling-nans
 243 CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES \
 244                          $(libm-test-fast-math-cflags)
 245 CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
 246                           $(libm-test-fast-math-cflags)
 247 CPPFLAGS-test-ildouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
 248                           $(libm-test-fast-math-cflags)
 249
 250 CFLAGS-test-signgam-finite.c = -ffinite-math-only
 251 CFLAGS-test-signgam-finite-c99.c = -ffinite-math-only -std=c99
 252 CFLAGS-test-signgam-finite-c11.c = -ffinite-math-only -std=c11
 253 CFLAGS-test-signgam-uchar.c = -std=c99
 254 CFLAGS-test-signgam-uchar-init.c = -std=c99
 255 CFLAGS-test-signgam-uchar-static.c = -std=c99
 256 CFLAGS-test-signgam-uchar-init-static.c = -std=c99
 257 CFLAGS-test-signgam-uint.c = -std=c99
 258 CFLAGS-test-signgam-uint-init.c = -std=c99
 259 CFLAGS-test-signgam-uint-static.c = -std=c99
 260 CFLAGS-test-signgam-uint-init-static.c = -std=c99
 261 CFLAGS-test-signgam-ullong.c = -std=c99
 262 CFLAGS-test-signgam-ullong-init.c = -std=c99
 263 CFLAGS-test-signgam-ullong-static.c = -std=c99
 264 CFLAGS-test-signgam-ullong-init-static.c = -std=c99
 265
 266 CFLAGS-test-math-isinff.cc = -std=gnu++11
 267
 268 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
 269 # for error handling in the -lm functions.
 270 install-lib += libieee.a
 271 non-lib.a += libieee.a
 272 extra-objs += libieee.a ieee-math.o
 273
 274 include ../Rules
 275
 276 gen-all-calls = $(gen-libm-calls) $(gen-calls)
 277
 278 generated += $(addsuffix .c,$(call type-foreach,$(gen-all-calls))) \
 279              gen-libm-templates.stmp
 280
 281 # Create wrappers in the math build directory.
 282 $(objpfx)gen-libm-templates.stmp: Makefile
 283         $(make-target-directory)
 284         for gcall in $(gen-all-calls); do                                 \
 285           func=$${gcall%F*}$${gcall#*F};                                  \
 286           for type in $(foreach t,$(types),$(t)__$(type-$(t)-suffix)); do \
 287             suff=$${type#*__};                                            \
 288             type=$${type%__*};                                            \
 289             file=$(objpfx)$${gcall%F*}$${suff}$${gcall#*F}.c;             \
 290             (                                                             \
 291               echo "#include <math-type-macros-$${type}.h>";              \
 292               echo "#include <$${func}_template.c>";                      \
 293             ) > $${file};                                                 \
 294           done;                                                           \
 295         done;                                                             \
 296         echo > $(@)
 297
 298 # Add dependency to ensure the generator runs prior.
 299 $(foreach t, $(call type-foreach, $(gen-all-calls)), \
 300              $(objpfx)$(t).c): $(objpfx)gen-libm-templates.stmp
 301
 302 ifneq (no,$(PERL))
 303 # This must come after the inclusion of sysdeps Makefiles via Rules.
 304 $(addprefix $(objpfx), $(libm-tests.o)): $(objpfx)libm-test.stmp
 305
 306 # Run the math programs to automatically generate ULPs files.
 307 .PHONY: regen-ulps
 308
 309 run-regen-ulps = $(test-wrapper-env) \
 310             $(run-program-env) \
 311             $($*-ENV) $(rtld-prefix) $${run}
 312
 313 regen-ulps: $(addprefix $(objpfx),$(libm-tests))
 314         rm -f $(objpfx)ULPs; rm -f $(objpfx)NewUlps; \
 315         cp $(ulps-file) $(objpfx)libm-test-ulps; \
 316         for run in $^; do \
 317           echo "Regenerating ULPs for $${run}"; \
 318           $(run-regen-ulps) -u -o $(objpfx); \
 319           cat $(objpfx)ULPs >> $(objpfx)libm-test-ulps; \
 320           rm $(objpfx)ULPs; \
 321         done; \
 322         $(PERL) gen-libm-test.pl -o $(objpfx) -n -u $(objpfx)libm-test-ulps; \
 323         echo "Automatic regeneration of ULPs complete."; \
 324         echo "Difference between the current baseline and the new baseline is:";\
 325         diff -urN $(ulps-file) $(objpfx)NewUlps; \
 326         echo "Copy $(objpfx)NewUlps to $(ulps-file) (relative to source)."
 327 else
 328 regen-ulps:
 329         @echo "Automatic regeneration of ULPs requires perl."; \
 330         exit 1;
 331 endif
 332
 333 # The generated sysd-rules file defines rules like this for sources
 334 # coming from sysdeps/ directories.  These rules find the generic sources.
 335 define o-iterator-doit
 336 $(objpfx)m_%$o: s_%.c $(before-compile); $$(compile-command.c)
 337 endef
 338 object-suffixes-left := $(all-object-suffixes)
 339 include $(o-iterator)
 340
 341 # Likewise, for those generated files shared with libc.
 342 define o-iterator-doit
 343 $(objpfx)m_%$o: $(objpfx)s_%.c $(before-compile); $$(compile-command.c)
 344 endef
 345 object-suffixes-left := $(all-object-suffixes)
 346 include $(o-iterator)
 347
 348 # This file defines the default _LIB_VERSION variable that controls
 349 # the error return conventions for the math functions.
 350 CPPFLAGS-s_lib_version.c := -D_POSIX_MODE
 351
 352 # We don't want the fdlibm code to use the inline math functions,
 353 # only the fdlibm code.
 354 math-CPPFLAGS += -D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES
 355
 356 ifneq ($(long-double-fcts),yes)
 357 # The `double' and `long double' types are the same on this machine.
 358 # We won't compile the `long double' code at all.  Tell the `double' code
 359 # to define aliases for the `FUNCl' names.  To avoid type conflicts in
 360 # defining those aliases, tell <math.h> to declare the `FUNCl' names with
 361 # `double' instead of `long double'.
 362 math-CPPFLAGS += -DNO_LONG_DOUBLE -D_Mlong_double_=double
 363 endif
 364
 365 # These files quiet sNaNs in a way that is optimized away without
 366 # -fsignaling-nans.
 367 CFLAGS-s_modf.c += -fsignaling-nans
 368 CFLAGS-s_modff.c += -fsignaling-nans
 369 CFLAGS-s_modfl.c += -fsignaling-nans
 370
 371 # The -lieee library is actually an object file.
 372 # The module just defines the _LIB_VERSION_ variable.
 373 # It's not a library to make sure it is linked in instead of s_lib_version.o.
 374 $(objpfx)libieee.a: $(objpfx)ieee-math.o
 375         rm -f $@
 376         $(patsubst %/,cd % &&,$(objpfx)) \
 377         $(LN_S) $(<F) $(@F)
 378
 379 $(addprefix $(objpfx),\
 380             $(filter-out $(tests-static) $(libm-vec-tests),$(tests))): $(libm)
 381 $(addprefix $(objpfx),$(tests-static)): $(objpfx)libm.a
 382 $(addprefix $(objpfx), $(libm-vec-tests)): $(objpfx)%: $(objpfx)%-wrappers.o \
 383                                                        $(libm) $(libmvec)
 384
 385 gmp-objs = $(patsubst %,$(common-objpfx)stdlib/%.o,\
 386                       add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
 387                       lshift rshift mp_clz_tab udiv_qrnnd inlines \
 388                       $(gmp-sysdep_routines))
 389 $(objpfx)atest-exp: $(gmp-objs)
 390 $(objpfx)atest-sincos: $(gmp-objs)
 391 $(objpfx)atest-exp2: $(gmp-objs)
 392 $(objpfx)test-fenv-tls: $(shared-thread-library)