math/Makefile

   1 # Copyright (C) 1996-2017 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                    bits/flt-eval-method.h bits/fp-fast.h bits/fp-logb.h \
  32                    bits/long-double.h
  33
  34 # FPU support code.
  35 aux             := setfpucw fpu_control
  36
  37 # Build the -lm library.
  38
  39 extra-libs      := libm
  40 extra-libs-others = $(extra-libs)
  41
  42 libm-support = s_lib_version s_matherr s_signgam                        \
  43                fclrexcpt fgetexcptflg fraiseexcpt fsetexcptflg          \
  44                ftestexcept fegetround fesetround fegetenv feholdexcpt   \
  45                fesetenv feupdateenv t_exp fedisblxcpt feenablxcpt       \
  46                fegetexcept fesetexcept fetestexceptflag fegetmode       \
  47                fesetmode
  48
  49 # Wrappers for these functions generated per type using a file named
  50 # <func>_template.c and the appropriate math-type-macros-<TYPE>.h.
  51 gen-libm-calls = cargF conjF cimagF crealF cabsF s_cacosF                 \
  52                  s_cacoshF s_ccosF s_ccoshF s_casinF s_csinF s_casinhF    \
  53                  k_casinhF s_csinhF k_casinhF s_csinhF s_catanhF s_catanF \
  54                  s_ctanF s_ctanhF s_cexpF s_clogF s_cprojF s_csqrtF       \
  55                  s_cpowF s_clog10F s_fdimF s_nextdownF s_fmaxF s_fminF    \
  56                  s_nanF s_iseqsigF s_canonicalizeF w_ilogbF w_llogbF      \
  57                  w_log1pF w_scalblnF s_fmaxmagF s_fminmagF
  58
  59 libm-calls =                                                              \
  60         e_acosF e_acoshF e_asinF e_atan2F e_atanhF e_coshF e_expF e_fmodF \
  61         e_hypotF e_j0F e_j1F e_jnF e_lgammaF_r e_logF e_log10F e_powF     \
  62         e_rem_pio2F e_remainderF e_scalbF e_sinhF e_sqrtF e_gammaF_r      \
  63         e_ilogbF                                                          \
  64         k_cosF k_sinF k_tanF s_asinhF s_atanF s_cbrtF                     \
  65         s_ceilF s_cosF s_erfF s_expm1F s_fabsF                            \
  66         s_floorF s_log1pF s_logbF                                 \
  67         s_nextafterF s_nexttowardF s_rintF s_scalblnF                     \
  68         s_significandF s_sinF s_tanF s_tanhF w_acosF w_acoshF w_asinF     \
  69         w_atan2F w_atanhF w_coshF w_expF w_exp2F w_exp10F w_fmodF         \
  70         w_tgammaF w_hypotF w_j0F w_j1F w_jnF w_lgammaF w_lgammaF_r        \
  71         w_logF w_log10F w_powF w_remainderF w_scalbF w_sinhF w_sqrtF      \
  72         s_fpclassifyF s_truncF                                            \
  73         s_remquoF e_log2F e_exp2F s_roundF s_nearbyintF s_sincosF         \
  74         s_fmaF s_lrintF s_llrintF s_lroundF s_llroundF e_exp10F w_log2F   \
  75         s_issignalingF $(calls:s_%=m_%) x2y2m1F                           \
  76         gamma_productF lgamma_negF lgamma_productF                        \
  77         s_nextupF s_totalorderF s_totalordermagF s_getpayloadF            \
  78         s_setpayloadF s_setpayloadsigF s_roundevenF s_fromfpF s_ufromfpF  \
  79         s_fromfpxF s_ufromfpxF $(gen-libm-calls)
  80
  81 libm-compat-calls-ldouble-yes = w_lgamma_compatl k_standardl
  82 libm-compat-calls = w_lgamma_compatf w_lgamma_compat k_standard k_standardf \
  83                     $(libm-compat-calls-ldouble-$(long-double-fcts))
  84
  85
  86 # Type specific routine support.
  87 #
  88 # The following three variables control what is included for each type:
  89 #
  90 # type-floatN-suffix = The suffix of the type
  91 # type-floatN-routines = Type specific support objects
  92 # type-floatN-yes = If the type is supported, evaluates to floatN
  93 #
  94 # Finally, note that types is an intentionally recursive variable.
  95 # We only know the full set of supported types for the target machine
  96 # after the Rules makefile has been parsed.
  97 types = $(type-ldouble-$(long-double-fcts)) double float
  98
  99 # long double support
 100 type-ldouble-suffix := l
 101 type-ldouble-routines := t_sincosl k_sincosl s_iscanonicall
 102 type-ldouble-yes := ldouble
 103
 104 # double support
 105 type-double-suffix :=
 106 type-double-routines := branred doasin dosincos halfulp mpa mpatan2     \
 107                        mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
 108                        slowpow sincostab k_rem_pio2
 109
 110 # float support
 111 type-float-suffix := f
 112 type-float-routines := k_rem_pio2f
 113
 114
 115 # Apply suffix to each type in arg 1
 116 type-foreach = $(foreach t,$(types),$(subst F,$(type-$(t)-suffix),$(1)))
 117
 118 libm-routines = $(strip $(libm-support) $(libm-compat-calls)            \
 119                         $(call type-foreach, $(libm-calls))             \
 120                         $(foreach t, $(types), $(type-$(t)-routines)))  \
 121
 122 # These functions are in libc instead of libm because __printf_fp
 123 # calls them, so any program using printf will need them linked in,
 124 # and we don't want to have to link every program with -lm.
 125 # In libm-calls (above), list m_foo in place of s_foo for any
 126 # routine that should be compiled separately for its libc and libm versions.
 127 calls = s_isinfF s_isnanF s_finiteF s_copysignF s_modfF s_scalbnF s_frexpF \
 128         s_signbitF $(gen-calls)
 129 gen-calls = s_ldexpF
 130 generated += $(foreach s,.c .S,$(call type-foreach, $(calls:s_%=m_%$(s))))
 131 routines = $(call type-foreach, $(calls))
 132
 133 ifeq ($(build-mathvec),yes)
 134 # We need to install libm.so and libm.a as linker scripts
 135 # for transparent use of vector math library.
 136 install-lib-ldscripts := libm.so libm.a
 137 install-others = $(inst_libdir)/libm.so $(inst_libdir)/libm.a
 138 $(inst_libdir)/libm.so: $(common-objpfx)format.lds \
 139                         $(libm) \
 140                         $(libmvec) \
 141                         $(+force)
 142         (echo '/* GNU ld script'; echo '*/';\
 143          cat $<; \
 144          echo 'GROUP ( $(slibdir)/libm.so$(libm.so-version) ' \
 145               'AS_NEEDED ( $(libdir)/libmvec_nonshared.a $(slibdir)/libmvec.so$(libmvec.so-version) ) )' \
 146         ) > $@.new
 147         mv -f $@.new $@
 148
 149 $(inst_libdir)/libm-$(version).a: $(objpfx)libm.a \
 150                                   $(+force)
 151         $(do-install)
 152
 153 $(inst_libdir)/libm.a: $(common-objpfx)format.lds \
 154                        $(inst_libdir)/libm-$(version).a \
 155                        $(objpfx)../mathvec/libmvec.a \
 156                        $(+force)
 157         (echo '/* GNU ld script'; echo '*/';\
 158          cat $<; \
 159          echo 'GROUP ( $(libdir)/libm-$(version).a $(libdir)/libmvec.a )' \
 160         ) > $@.new
 161         mv -f $@.new $@
 162 endif
 163
 164 # Rules for the test suite.
 165 tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
 166         test-misc test-fpucw test-fpucw-ieee tst-definitions test-tgmath \
 167         test-tgmath-ret bug-nextafter bug-nexttoward bug-tgmath1 \
 168         test-tgmath-int test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan \
 169         test-fenv-tls test-fenv-preserve test-fenv-return test-fenvinline \
 170         test-nearbyint-except test-fenv-clear test-signgam-finite \
 171         test-signgam-finite-c99 test-signgam-finite-c11 \
 172         test-nearbyint-except-2 test-signgam-uchar test-signgam-uchar-init \
 173         test-signgam-uint test-signgam-uint-init test-signgam-ullong \
 174         test-signgam-ullong-init test-nan-overflow test-nan-payload \
 175         test-fexcept test-fexcept-traps test-fesetexcept \
 176         test-fesetexcept-traps test-fetestexceptflag test-femode \
 177         test-femode-traps test-iszero-excess-precision \
 178         test-iseqsig-excess-precision test-flt-eval-method \
 179         test-fp-ilogb-constants test-fp-llogb-constants \
 180         test-fe-snans-always-signal $(tests-static)
 181 tests-static = test-fpucw-static test-fpucw-ieee-static \
 182                test-signgam-uchar-static test-signgam-uchar-init-static \
 183                test-signgam-uint-static test-signgam-uint-init-static \
 184                test-signgam-ullong-static test-signgam-ullong-init-static
 185
 186 ifneq (,$(CXX))
 187 tests += test-math-isinff test-math-iszero
 188 endif
 189
 190 ifneq (no,$(PERL))
 191 libm-vec-tests = $(addprefix test-,$(libmvec-tests))
 192
 193 libm-tests = $(foreach t,$(types),test-$(t) test-$(t)-finite test-i$(t)) \
 194              $(libm-vec-tests)
 195
 196 libm-tests.o = $(addsuffix .o,$(libm-tests))
 197
 198 tests += $(libm-tests)
 199 libm-vec-test-wrappers = $(addsuffix -wrappers, $(libm-vec-tests))
 200 test-extras += $(libm-vec-test-wrappers)
 201 extra-test-objs += $(addsuffix .o, $(libm-vec-test-wrappers))
 202 libm-tests-generated = libm-test-ulps.h libm-have-vector-test.h libm-test.c
 203 generated += $(libm-tests-generated) libm-test.stmp
 204
 205 # This is needed for dependencies
 206 before-compile += $(objpfx)libm-test.c
 207
 208 ulps-file = $(firstword $(wildcard $(sysdirs:%=%/libm-test-ulps)))
 209
 210 $(addprefix $(objpfx), $(libm-tests-generated)): $(objpfx)libm-test.stmp
 211
 212 $(objpfx)libm-test.stmp: $(ulps-file) libm-test.inc gen-libm-test.pl \
 213                          gen-libm-have-vector-test.sh auto-libm-test-out
 214         $(make-target-directory)
 215         $(PERL) gen-libm-test.pl -u $< -o "$(objpfx)"
 216         $(SHELL) gen-libm-have-vector-test.sh > $(objpfx)libm-have-vector-test.h
 217         @echo > $@
 218 endif
 219
 220 libm-test-fast-math-cflags = -fno-builtin -D__FAST_MATH__ -DTEST_FAST_MATH
 221 libm-test-vec-cflags = $(libm-test-fast-math-cflags) -fno-inline \
 222                        -ffloat-store -D_OPENMP=201307 -Wno-unknown-pragmas
 223
 224 CFLAGS-test-double-vlen2.c = $(libm-test-vec-cflags)
 225
 226 CFLAGS-test-double-vlen4.c = $(libm-test-vec-cflags)
 227 CFLAGS-test-double-vlen4-wrappers.c = $(double-vlen4-arch-ext-cflags)
 228
 229 CFLAGS-test-double-vlen8.c = $(libm-test-vec-cflags)
 230 CFLAGS-test-double-vlen8-wrappers.c = $(double-vlen8-arch-ext-cflags)
 231
 232 CFLAGS-test-float-vlen4.c = $(libm-test-vec-cflags)
 233
 234 CFLAGS-test-float-vlen8.c = $(libm-test-vec-cflags)
 235 CFLAGS-test-float-vlen8-wrappers.c = $(float-vlen8-arch-ext-cflags)
 236
 237 CFLAGS-test-float-vlen16.c = $(libm-test-vec-cflags)
 238 CFLAGS-test-float-vlen16-wrappers.c = $(float-vlen16-arch-ext-cflags)
 239
 240 # The no-inline tests use -fsignaling-nans, and thereby use the
 241 # versions of classification macros that support sNaNs.  The inline
 242 # function tests use the versions of classification macros that may
 243 # raise spurious exceptions for sNaNs, but also do not test for
 244 # exceptions.  Thus both versions of the classification macros are
 245 # validated.
 246 libm-test-no-inline-cflags = -fno-inline -ffloat-store -fno-builtin \
 247                              -fsignaling-nans
 248 libm-test-finite-cflags = $(libm-test-no-inline-cflags) \
 249                           -U__FINITE_MATH_ONLY__ -D__FINITE_MATH_ONLY__=1
 250 CFLAGS-test-float.c = $(libm-test-no-inline-cflags)
 251 CFLAGS-test-float-finite.c = $(libm-test-finite-cflags)
 252 CFLAGS-test-double.c = $(libm-test-no-inline-cflags)
 253 CFLAGS-test-double-finite.c = $(libm-test-finite-cflags)
 254 CFLAGS-test-ldouble.c = $(libm-test-no-inline-cflags)
 255 CFLAGS-test-ldouble-finite.c = $(libm-test-finite-cflags)
 256 CFLAGS-test-tgmath.c = -fno-builtin
 257 # The following testcase uses very long lines (>3 million), so it may take a
 258 # while to compile it. See: http://llvm.org/bugs/show_bug.cgi?id=14106 and
 259 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402
 260 CFLAGS-test-tgmath2.c = -fno-builtin
 261 CFLAGS-test-tgmath-ret.c = -fno-builtin
 262 CFLAGS-test-powl.c = -fno-builtin
 263
 264 CFLAGS-test-snan.c = -fsignaling-nans
 265 CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES \
 266                          $(libm-test-fast-math-cflags)
 267 CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
 268                           $(libm-test-fast-math-cflags)
 269 CPPFLAGS-test-ildouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
 270                           $(libm-test-fast-math-cflags)
 271
 272 CFLAGS-test-signgam-finite.c = -ffinite-math-only
 273 CFLAGS-test-signgam-finite-c99.c = -ffinite-math-only -std=c99
 274 CFLAGS-test-signgam-finite-c11.c = -ffinite-math-only -std=c11
 275 CFLAGS-test-signgam-uchar.c = -std=c99
 276 CFLAGS-test-signgam-uchar-init.c = -std=c99
 277 CFLAGS-test-signgam-uchar-static.c = -std=c99
 278 CFLAGS-test-signgam-uchar-init-static.c = -std=c99
 279 CFLAGS-test-signgam-uint.c = -std=c99
 280 CFLAGS-test-signgam-uint-init.c = -std=c99
 281 CFLAGS-test-signgam-uint-static.c = -std=c99
 282 CFLAGS-test-signgam-uint-init-static.c = -std=c99
 283 CFLAGS-test-signgam-ullong.c = -std=c99
 284 CFLAGS-test-signgam-ullong-init.c = -std=c99
 285 CFLAGS-test-signgam-ullong-static.c = -std=c99
 286 CFLAGS-test-signgam-ullong-init-static.c = -std=c99
 287
 288 CFLAGS-test-math-isinff.cc = -std=gnu++11
 289 CFLAGS-test-math-iszero.cc = -std=gnu++11
 290
 291 CFLAGS-test-iszero-excess-precision.c = -fexcess-precision=standard
 292 CFLAGS-test-iseqsig-excess-precision.c = -fexcess-precision=standard
 293 CFLAGS-test-flt-eval-method.c = -fexcess-precision=standard
 294
 295 CFLAGS-test-fe-snans-always-signal.c = -fsignaling-nans
 296
 297 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
 298 # for error handling in the -lm functions.
 299 install-lib += libieee.a
 300 non-lib.a += libieee.a
 301 extra-objs += libieee.a ieee-math.o
 302
 303 include ../Rules
 304
 305 gen-all-calls = $(gen-libm-calls) $(gen-calls)
 306
 307 generated += $(addsuffix .c,$(call type-foreach,$(gen-all-calls))) \
 308              gen-libm-templates.stmp
 309
 310 # Create wrappers in the math build directory.
 311 $(objpfx)gen-libm-templates.stmp: Makefile
 312         $(make-target-directory)
 313         for gcall in $(gen-all-calls); do                                 \
 314           func=$${gcall%F*}$${gcall#*F};                                  \
 315           for type in $(foreach t,$(types),$(t)__$(type-$(t)-suffix)); do \
 316             suff=$${type#*__};                                            \
 317             type=$${type%__*};                                            \
 318             file=$(objpfx)$${gcall%F*}$${suff}$${gcall#*F}.c;             \
 319             (                                                             \
 320               echo "#include <math-type-macros-$${type}.h>";              \
 321               echo "#include <$${func}_template.c>";                      \
 322             ) > $${file};                                                 \
 323           done;                                                           \
 324         done;                                                             \
 325         echo > $(@)
 326
 327 # Add dependency to ensure the generator runs prior.
 328 $(foreach t, $(call type-foreach, $(gen-all-calls)), \
 329              $(objpfx)$(t).c): $(objpfx)gen-libm-templates.stmp
 330
 331 ifneq (no,$(PERL))
 332 # This must come after the inclusion of sysdeps Makefiles via Rules.
 333 $(addprefix $(objpfx), $(libm-tests.o)): $(objpfx)libm-test.stmp
 334
 335 # Run the math programs to automatically generate ULPs files.
 336 .PHONY: regen-ulps
 337
 338 run-regen-ulps = $(test-wrapper-env) \
 339             $(run-program-env) \
 340             $($*-ENV) $(rtld-prefix) $${run}
 341
 342 regen-ulps: $(addprefix $(objpfx),$(libm-tests))
 343         rm -f $(objpfx)ULPs; rm -f $(objpfx)NewUlps; \
 344         cp $(ulps-file) $(objpfx)libm-test-ulps; \
 345         for run in $^; do \
 346           echo "Regenerating ULPs for $${run}"; \
 347           $(run-regen-ulps) -u -o $(objpfx); \
 348           cat $(objpfx)ULPs >> $(objpfx)libm-test-ulps; \
 349           rm $(objpfx)ULPs; \
 350         done; \
 351         $(PERL) gen-libm-test.pl -o $(objpfx) -n -u $(objpfx)libm-test-ulps; \
 352         echo "Automatic regeneration of ULPs complete."; \
 353         echo "Difference between the current baseline and the new baseline is:";\
 354         diff -urN $(ulps-file) $(objpfx)NewUlps; \
 355         echo "Copy $(objpfx)NewUlps to $(ulps-file) (relative to source)."
 356 else
 357 regen-ulps:
 358         @echo "Automatic regeneration of ULPs requires perl."; \
 359         exit 1;
 360 endif
 361
 362 # The generated sysd-rules file defines rules like this for sources
 363 # coming from sysdeps/ directories.  These rules find the generic sources.
 364 define o-iterator-doit
 365 $(objpfx)m_%$o: s_%.c $(before-compile); $$(compile-command.c)
 366 endef
 367 object-suffixes-left := $(all-object-suffixes)
 368 include $(o-iterator)
 369
 370 # Likewise, for those generated files shared with libc.
 371 define o-iterator-doit
 372 $(objpfx)m_%$o: $(objpfx)s_%.c $(before-compile); $$(compile-command.c)
 373 endef
 374 object-suffixes-left := $(all-object-suffixes)
 375 include $(o-iterator)
 376
 377 # This file defines the default _LIB_VERSION variable that controls
 378 # the error return conventions for the math functions.
 379 CPPFLAGS-s_lib_version.c := -D_POSIX_MODE
 380
 381 # We don't want the fdlibm code to use the inline math functions,
 382 # only the fdlibm code.
 383 math-CPPFLAGS += -D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES
 384
 385 ifneq ($(long-double-fcts),yes)
 386 # The `double' and `long double' types are the same on this machine.
 387 # We won't compile the `long double' code at all.  Tell the `double' code
 388 # to define aliases for the `FUNCl' names.  To avoid type conflicts in
 389 # defining those aliases, tell <math.h> to declare the `FUNCl' names with
 390 # `double' instead of `long double'.
 391 math-CPPFLAGS += -DNO_LONG_DOUBLE -D_Mlong_double_=double
 392 endif
 393
 394 # These files quiet sNaNs in a way that is optimized away without
 395 # -fsignaling-nans.
 396 CFLAGS-s_modf.c += -fsignaling-nans
 397 CFLAGS-s_modff.c += -fsignaling-nans
 398 CFLAGS-s_modfl.c += -fsignaling-nans
 399
 400 # The -lieee library is actually an object file.
 401 # The module just defines the _LIB_VERSION_ variable.
 402 # It's not a library to make sure it is linked in instead of s_lib_version.o.
 403 $(objpfx)libieee.a: $(objpfx)ieee-math.o
 404         rm -f $@
 405         $(patsubst %/,cd % &&,$(objpfx)) \
 406         $(LN_S) $(<F) $(@F)
 407
 408 $(addprefix $(objpfx),\
 409             $(filter-out $(tests-static) $(libm-vec-tests),$(tests))): $(libm)
 410 $(addprefix $(objpfx),$(tests-static)): $(objpfx)libm.a
 411 $(addprefix $(objpfx), $(libm-vec-tests)): $(objpfx)%: $(objpfx)%-wrappers.o \
 412                                                        $(libm) $(libmvec)
 413
 414 gmp-objs = $(patsubst %,$(common-objpfx)stdlib/%.o,\
 415                       add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
 416                       lshift rshift mp_clz_tab udiv_qrnnd inlines \
 417                       $(gmp-sysdep_routines))
 418 $(objpfx)atest-exp: $(gmp-objs)
 419 $(objpfx)atest-sincos: $(gmp-objs)
 420 $(objpfx)atest-exp2: $(gmp-objs)
 421 $(objpfx)test-fenv-tls: $(shared-thread-library)