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 bits/iscanonical.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                  s_nanF s_iseqsigF s_canonicalizeF
  55
  56 libm-calls =                                                              \
  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      \
  60         e_ilogbF                                                          \
  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      \
  69         w_ilogbF                                                          \
  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 s_totalorderF s_totalordermagF s_getpayloadF            \
  76         $(gen-libm-calls)
  77
  78 libm-compat-calls-ldouble-yes = w_lgamma_compatl k_standardl
  79 libm-compat-calls = w_lgamma_compatf w_lgamma_compat k_standard k_standardf \
  80                     $(libm-compat-calls-ldouble-$(long-double-fcts))
  81
  82
  83 # Type specific routine support.
  84 #
  85 # The following three variables control what is included for each type:
  86 #
  87 # type-floatN-suffix = The suffix of the type
  88 # type-floatN-routines = Type specific support objects
  89 # type-floatN-yes = If the type is supported, evaluates to floatN
  90 #
  91 # Finally, note that types is an intentionally recursive variable.
  92 # We only know the full set of supported types for the target machine
  93 # after the Rules makefile has been parsed.
  94 types = $(type-ldouble-$(long-double-fcts)) double float
  95
  96 # long double support
  97 type-ldouble-suffix := l
  98 type-ldouble-routines := t_sincosl k_sincosl s_iscanonicall
  99 type-ldouble-yes := ldouble
 100
 101 # double support
 102 type-double-suffix :=
 103 type-double-routines := branred doasin dosincos halfulp mpa mpatan2     \
 104                        mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
 105                        slowpow sincostab k_rem_pio2
 106
 107 # float support
 108 type-float-suffix := f
 109 type-float-routines := k_rem_pio2f
 110
 111
 112 # Apply suffix to each type in arg 1
 113 type-foreach = $(foreach t,$(types),$(subst F,$(type-$(t)-suffix),$(1)))
 114
 115 libm-routines = $(strip $(libm-support) $(libm-compat-calls)            \
 116                         $(call type-foreach, $(libm-calls))             \
 117                         $(foreach t, $(types), $(type-$(t)-routines)))  \
 118
 119 # These functions are in libc instead of libm because __printf_fp
 120 # calls them, so any program using printf will need them linked in,
 121 # and we don't want to have to link every program with -lm.
 122 # In libm-calls (above), list m_foo in place of s_foo for any
 123 # routine that should be compiled separately for its libc and libm versions.
 124 calls = s_isinfF s_isnanF s_finiteF s_copysignF s_modfF s_scalbnF s_frexpF \
 125         s_signbitF $(gen-calls)
 126 gen-calls = s_ldexpF
 127 generated += $(foreach s,.c .S,$(call type-foreach, $(calls:s_%=m_%$(s))))
 128 routines = $(call type-foreach, $(calls))
 129
 130 ifeq ($(build-mathvec),yes)
 131 # We need to install libm.so as linker script
 132 # for more comfortable use of vector math library.
 133 install-lib-ldscripts := libm.so
 134 install_subdir: $(inst_libdir)/libm.so
 135 $(inst_libdir)/libm.so: $(common-objpfx)format.lds \
 136                         $(libm) \
 137                         $(libmvec) \
 138                         $(+force)
 139         (echo '/* GNU ld script'; echo '*/';\
 140          cat $<; \
 141          echo 'GROUP ( $(slibdir)/libm.so$(libm.so-version) ' \
 142               'AS_NEEDED ( $(libdir)/libmvec_nonshared.a $(slibdir)/libmvec.so$(libmvec.so-version) ) )' \
 143         ) > $@.new
 144         mv -f $@.new $@
 145 endif
 146
 147 # Rules for the test suite.
 148 tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
 149         test-misc test-fpucw test-fpucw-ieee tst-definitions test-tgmath \
 150         test-tgmath-ret bug-nextafter bug-nexttoward bug-tgmath1 \
 151         test-tgmath-int test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan \
 152         test-fenv-tls test-fenv-preserve test-fenv-return test-fenvinline \
 153         test-nearbyint-except test-fenv-clear test-signgam-finite \
 154         test-signgam-finite-c99 test-signgam-finite-c11 \
 155         test-nearbyint-except-2 test-signgam-uchar test-signgam-uchar-init \
 156         test-signgam-uint test-signgam-uint-init test-signgam-ullong \
 157         test-signgam-ullong-init test-nan-overflow test-nan-payload \
 158         test-fexcept test-fexcept-traps test-fesetexcept \
 159         test-fesetexcept-traps test-fetestexceptflag test-femode \
 160         test-femode-traps test-iszero-excess-precision \
 161         test-iseqsig-excess-precision $(tests-static)
 162 tests-static = test-fpucw-static test-fpucw-ieee-static \
 163                test-signgam-uchar-static test-signgam-uchar-init-static \
 164                test-signgam-uint-static test-signgam-uint-init-static \
 165                test-signgam-ullong-static test-signgam-ullong-init-static
 166
 167 ifneq (,$(CXX))
 168 tests += test-math-isinff test-math-iszero
 169 endif
 170
 171 ifneq (no,$(PERL))
 172 libm-vec-tests = $(addprefix test-,$(libmvec-tests))
 173
 174 libm-tests = $(foreach t,$(types),test-$(t) test-$(t)-finite test-i$(t)) \
 175              $(libm-vec-tests)
 176
 177 libm-tests.o = $(addsuffix .o,$(libm-tests))
 178
 179 tests += $(libm-tests)
 180 libm-vec-test-wrappers = $(addsuffix -wrappers, $(libm-vec-tests))
 181 test-extras += $(libm-vec-test-wrappers)
 182 extra-test-objs += $(addsuffix .o, $(libm-vec-test-wrappers))
 183 libm-tests-generated = libm-test-ulps.h libm-have-vector-test.h libm-test.c
 184 generated += $(libm-tests-generated) libm-test.stmp
 185
 186 # This is needed for dependencies
 187 before-compile += $(objpfx)libm-test.c
 188
 189 ulps-file = $(firstword $(wildcard $(sysdirs:%=%/libm-test-ulps)))
 190
 191 $(addprefix $(objpfx), $(libm-tests-generated)): $(objpfx)libm-test.stmp
 192
 193 $(objpfx)libm-test.stmp: $(ulps-file) libm-test.inc gen-libm-test.pl \
 194                          gen-libm-have-vector-test.sh auto-libm-test-out
 195         $(make-target-directory)
 196         $(PERL) gen-libm-test.pl -u $< -o "$(objpfx)"
 197         $(SHELL) gen-libm-have-vector-test.sh > $(objpfx)libm-have-vector-test.h
 198         @echo > $@
 199 endif
 200
 201 libm-test-fast-math-cflags = -fno-builtin -D__FAST_MATH__ -DTEST_FAST_MATH
 202 libm-test-vec-cflags = $(libm-test-fast-math-cflags) -fno-inline \
 203                        -ffloat-store -D_OPENMP=201307 -Wno-unknown-pragmas
 204
 205 CFLAGS-test-double-vlen2.c = $(libm-test-vec-cflags)
 206
 207 CFLAGS-test-double-vlen4.c = $(libm-test-vec-cflags)
 208 CFLAGS-test-double-vlen4-wrappers.c = $(double-vlen4-arch-ext-cflags)
 209
 210 CFLAGS-test-double-vlen8.c = $(libm-test-vec-cflags)
 211 CFLAGS-test-double-vlen8-wrappers.c = $(double-vlen8-arch-ext-cflags)
 212
 213 CFLAGS-test-float-vlen4.c = $(libm-test-vec-cflags)
 214
 215 CFLAGS-test-float-vlen8.c = $(libm-test-vec-cflags)
 216 CFLAGS-test-float-vlen8-wrappers.c = $(float-vlen8-arch-ext-cflags)
 217
 218 CFLAGS-test-float-vlen16.c = $(libm-test-vec-cflags)
 219 CFLAGS-test-float-vlen16-wrappers.c = $(float-vlen16-arch-ext-cflags)
 220
 221 # The no-inline tests use -fsignaling-nans, and thereby use the
 222 # versions of classification macros that support sNaNs.  The inline
 223 # function tests use the versions of classification macros that may
 224 # raise spurious exceptions for sNaNs, but also do not test for
 225 # exceptions.  Thus both versions of the classification macros are
 226 # validated.
 227 libm-test-no-inline-cflags = -fno-inline -ffloat-store -fno-builtin \
 228                              -fsignaling-nans
 229 libm-test-finite-cflags = $(libm-test-no-inline-cflags) \
 230                           -U__FINITE_MATH_ONLY__ -D__FINITE_MATH_ONLY__=1
 231 CFLAGS-test-float.c = $(libm-test-no-inline-cflags)
 232 CFLAGS-test-float-finite.c = $(libm-test-finite-cflags)
 233 CFLAGS-test-double.c = $(libm-test-no-inline-cflags)
 234 CFLAGS-test-double-finite.c = $(libm-test-finite-cflags)
 235 CFLAGS-test-ldouble.c = $(libm-test-no-inline-cflags)
 236 CFLAGS-test-ldouble-finite.c = $(libm-test-finite-cflags)
 237 CFLAGS-test-tgmath.c = -fno-builtin
 238 # The following testcase uses very long lines (>3 million), so it may take a
 239 # while to compile it. See: http://llvm.org/bugs/show_bug.cgi?id=14106 and
 240 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402
 241 CFLAGS-test-tgmath2.c = -fno-builtin
 242 CFLAGS-test-tgmath-ret.c = -fno-builtin
 243 CFLAGS-test-powl.c = -fno-builtin
 244
 245 CFLAGS-test-snan.c = -fsignaling-nans
 246 CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES \
 247                          $(libm-test-fast-math-cflags)
 248 CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
 249                           $(libm-test-fast-math-cflags)
 250 CPPFLAGS-test-ildouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
 251                           $(libm-test-fast-math-cflags)
 252
 253 CFLAGS-test-signgam-finite.c = -ffinite-math-only
 254 CFLAGS-test-signgam-finite-c99.c = -ffinite-math-only -std=c99
 255 CFLAGS-test-signgam-finite-c11.c = -ffinite-math-only -std=c11
 256 CFLAGS-test-signgam-uchar.c = -std=c99
 257 CFLAGS-test-signgam-uchar-init.c = -std=c99
 258 CFLAGS-test-signgam-uchar-static.c = -std=c99
 259 CFLAGS-test-signgam-uchar-init-static.c = -std=c99
 260 CFLAGS-test-signgam-uint.c = -std=c99
 261 CFLAGS-test-signgam-uint-init.c = -std=c99
 262 CFLAGS-test-signgam-uint-static.c = -std=c99
 263 CFLAGS-test-signgam-uint-init-static.c = -std=c99
 264 CFLAGS-test-signgam-ullong.c = -std=c99
 265 CFLAGS-test-signgam-ullong-init.c = -std=c99
 266 CFLAGS-test-signgam-ullong-static.c = -std=c99
 267 CFLAGS-test-signgam-ullong-init-static.c = -std=c99
 268
 269 CFLAGS-test-math-isinff.cc = -std=gnu++11
 270 CFLAGS-test-math-iszero.cc = -std=gnu++11
 271
 272 CFLAGS-test-iszero-excess-precision.c = -fexcess-precision=standard
 273 CFLAGS-test-iseqsig-excess-precision.c = -fexcess-precision=standard
 274
 275 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
 276 # for error handling in the -lm functions.
 277 install-lib += libieee.a
 278 non-lib.a += libieee.a
 279 extra-objs += libieee.a ieee-math.o
 280
 281 include ../Rules
 282
 283 gen-all-calls = $(gen-libm-calls) $(gen-calls)
 284
 285 generated += $(addsuffix .c,$(call type-foreach,$(gen-all-calls))) \
 286              gen-libm-templates.stmp
 287
 288 # Create wrappers in the math build directory.
 289 $(objpfx)gen-libm-templates.stmp: Makefile
 290         $(make-target-directory)
 291         for gcall in $(gen-all-calls); do                                 \
 292           func=$${gcall%F*}$${gcall#*F};                                  \
 293           for type in $(foreach t,$(types),$(t)__$(type-$(t)-suffix)); do \
 294             suff=$${type#*__};                                            \
 295             type=$${type%__*};                                            \
 296             file=$(objpfx)$${gcall%F*}$${suff}$${gcall#*F}.c;             \
 297             (                                                             \
 298               echo "#include <math-type-macros-$${type}.h>";              \
 299               echo "#include <$${func}_template.c>";                      \
 300             ) > $${file};                                                 \
 301           done;                                                           \
 302         done;                                                             \
 303         echo > $(@)
 304
 305 # Add dependency to ensure the generator runs prior.
 306 $(foreach t, $(call type-foreach, $(gen-all-calls)), \
 307              $(objpfx)$(t).c): $(objpfx)gen-libm-templates.stmp
 308
 309 ifneq (no,$(PERL))
 310 # This must come after the inclusion of sysdeps Makefiles via Rules.
 311 $(addprefix $(objpfx), $(libm-tests.o)): $(objpfx)libm-test.stmp
 312
 313 # Run the math programs to automatically generate ULPs files.
 314 .PHONY: regen-ulps
 315
 316 run-regen-ulps = $(test-wrapper-env) \
 317             $(run-program-env) \
 318             $($*-ENV) $(rtld-prefix) $${run}
 319
 320 regen-ulps: $(addprefix $(objpfx),$(libm-tests))
 321         rm -f $(objpfx)ULPs; rm -f $(objpfx)NewUlps; \
 322         cp $(ulps-file) $(objpfx)libm-test-ulps; \
 323         for run in $^; do \
 324           echo "Regenerating ULPs for $${run}"; \
 325           $(run-regen-ulps) -u -o $(objpfx); \
 326           cat $(objpfx)ULPs >> $(objpfx)libm-test-ulps; \
 327           rm $(objpfx)ULPs; \
 328         done; \
 329         $(PERL) gen-libm-test.pl -o $(objpfx) -n -u $(objpfx)libm-test-ulps; \
 330         echo "Automatic regeneration of ULPs complete."; \
 331         echo "Difference between the current baseline and the new baseline is:";\
 332         diff -urN $(ulps-file) $(objpfx)NewUlps; \
 333         echo "Copy $(objpfx)NewUlps to $(ulps-file) (relative to source)."
 334 else
 335 regen-ulps:
 336         @echo "Automatic regeneration of ULPs requires perl."; \
 337         exit 1;
 338 endif
 339
 340 # The generated sysd-rules file defines rules like this for sources
 341 # coming from sysdeps/ directories.  These rules find the generic sources.
 342 define o-iterator-doit
 343 $(objpfx)m_%$o: s_%.c $(before-compile); $$(compile-command.c)
 344 endef
 345 object-suffixes-left := $(all-object-suffixes)
 346 include $(o-iterator)
 347
 348 # Likewise, for those generated files shared with libc.
 349 define o-iterator-doit
 350 $(objpfx)m_%$o: $(objpfx)s_%.c $(before-compile); $$(compile-command.c)
 351 endef
 352 object-suffixes-left := $(all-object-suffixes)
 353 include $(o-iterator)
 354
 355 # This file defines the default _LIB_VERSION variable that controls
 356 # the error return conventions for the math functions.
 357 CPPFLAGS-s_lib_version.c := -D_POSIX_MODE
 358
 359 # We don't want the fdlibm code to use the inline math functions,
 360 # only the fdlibm code.
 361 math-CPPFLAGS += -D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES
 362
 363 ifneq ($(long-double-fcts),yes)
 364 # The `double' and `long double' types are the same on this machine.
 365 # We won't compile the `long double' code at all.  Tell the `double' code
 366 # to define aliases for the `FUNCl' names.  To avoid type conflicts in
 367 # defining those aliases, tell <math.h> to declare the `FUNCl' names with
 368 # `double' instead of `long double'.
 369 math-CPPFLAGS += -DNO_LONG_DOUBLE -D_Mlong_double_=double
 370 endif
 371
 372 # These files quiet sNaNs in a way that is optimized away without
 373 # -fsignaling-nans.
 374 CFLAGS-s_modf.c += -fsignaling-nans
 375 CFLAGS-s_modff.c += -fsignaling-nans
 376 CFLAGS-s_modfl.c += -fsignaling-nans
 377
 378 # The -lieee library is actually an object file.
 379 # The module just defines the _LIB_VERSION_ variable.
 380 # It's not a library to make sure it is linked in instead of s_lib_version.o.
 381 $(objpfx)libieee.a: $(objpfx)ieee-math.o
 382         rm -f $@
 383         $(patsubst %/,cd % &&,$(objpfx)) \
 384         $(LN_S) $(<F) $(@F)
 385
 386 $(addprefix $(objpfx),\
 387             $(filter-out $(tests-static) $(libm-vec-tests),$(tests))): $(libm)
 388 $(addprefix $(objpfx),$(tests-static)): $(objpfx)libm.a
 389 $(addprefix $(objpfx), $(libm-vec-tests)): $(objpfx)%: $(objpfx)%-wrappers.o \
 390                                                        $(libm) $(libmvec)
 391
 392 gmp-objs = $(patsubst %,$(common-objpfx)stdlib/%.o,\
 393                       add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
 394                       lshift rshift mp_clz_tab udiv_qrnnd inlines \
 395                       $(gmp-sysdep_routines))
 396 $(objpfx)atest-exp: $(gmp-objs)
 397 $(objpfx)atest-sincos: $(gmp-objs)
 398 $(objpfx)atest-exp2: $(gmp-objs)
 399 $(objpfx)test-fenv-tls: $(shared-thread-library)