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                              \
  69         w_expF                                                            \
  70         w_lgammaF                                                         \
  71         s_fpclassifyF s_truncF                                            \
  72         s_remquoF e_log2F e_exp2F s_roundF s_nearbyintF s_sincosF         \
  73         s_fmaF s_lrintF s_llrintF s_lroundF s_llroundF e_exp10F           \
  74         s_issignalingF $(calls:s_%=m_%) x2y2m1F                           \
  75         gamma_productF lgamma_negF lgamma_productF                        \
  76         s_nextupF s_totalorderF s_totalordermagF s_getpayloadF            \
  77         s_setpayloadF s_setpayloadsigF s_roundevenF s_fromfpF s_ufromfpF  \
  78         s_fromfpxF s_ufromfpxF $(gen-libm-calls)
  79
  80 libm-compat-calls-auto =                                                \
  81         w_acosF_compat w_acoshF_compat w_asinF_compat w_atan2F_compat   \
  82         w_atanhF_compat w_coshF_compat w_exp2F_compat w_exp10F_compat   \
  83         w_fmodF_compat w_hypotF_compat w_j0F_compat w_j1F_compat        \
  84         w_jnF_compat w_log2F_compat w_log10F_compat w_logF_compat       \
  85         w_powF_compat w_remainderF_compat w_scalbF_compat               \
  86         w_sinhF_compat w_sqrtF_compat w_tgammaF_compat                  \
  87         w_lgammaF_r_compat
  88
  89 libm-compat-calls-ldouble-yes = w_lgamma_compatl k_standardl
  90 libm-compat-calls = w_lgamma_compatf w_lgamma_compat k_standard k_standardf \
  91                     $(libm-compat-calls-ldouble-$(long-double-fcts))
  92
  93
  94 # Type specific routine support.
  95 #
  96 # The following three variables control what is included for each type:
  97 #
  98 # type-floatN-suffix = The suffix of the type
  99 # type-floatN-routines = Type specific support objects
 100 # type-floatN-yes = If the type is supported, evaluates to floatN
 101 #
 102 # Finally, note that types is an intentionally recursive variable.
 103 # We only know the full set of supported types for the target machine
 104 # after the Rules makefile has been parsed.
 105 types = $(type-ldouble-$(long-double-fcts)) double float
 106
 107 # long double support
 108 type-ldouble-suffix := l
 109 type-ldouble-routines := t_sincosl k_sincosl s_iscanonicall
 110 type-ldouble-yes := ldouble
 111
 112 # double support
 113 type-double-suffix :=
 114 type-double-routines := branred doasin dosincos halfulp mpa mpatan2     \
 115                        mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
 116                        slowpow sincostab k_rem_pio2
 117
 118 # float support
 119 type-float-suffix := f
 120 type-float-routines := k_rem_pio2f
 121
 122
 123 # Apply suffix to each type in arg 1
 124 type-foreach = $(foreach t,$(types),$(subst F,$(type-$(t)-suffix),$(1)))
 125
 126 libm-routines = $(strip $(libm-support) $(libm-compat-calls)            \
 127                         $(call type-foreach, $(libm-compat-calls-auto)) \
 128                         $(call type-foreach, $(libm-calls))             \
 129                         $(foreach t, $(types), $(type-$(t)-routines)))  \
 130
 131 # These functions are in libc instead of libm because __printf_fp
 132 # calls them, so any program using printf will need them linked in,
 133 # and we don't want to have to link every program with -lm.
 134 # In libm-calls (above), list m_foo in place of s_foo for any
 135 # routine that should be compiled separately for its libc and libm versions.
 136 calls = s_isinfF s_isnanF s_finiteF s_copysignF s_modfF s_scalbnF s_frexpF \
 137         s_signbitF $(gen-calls)
 138 gen-calls = s_ldexpF
 139 generated += $(foreach s,.c .S,$(call type-foreach, $(calls:s_%=m_%$(s))))
 140 routines = $(call type-foreach, $(calls))
 141
 142 ifeq ($(build-mathvec),yes)
 143 # We need to install libm.so and libm.a as linker scripts
 144 # for transparent use of vector math library.
 145 install-lib-ldscripts := libm.so libm.a
 146 install-others = $(inst_libdir)/libm.so $(inst_libdir)/libm.a
 147 $(inst_libdir)/libm.so: $(common-objpfx)format.lds \
 148                         $(libm) \
 149                         $(libmvec) \
 150                         $(+force)
 151         (echo '/* GNU ld script'; echo '*/';\
 152          cat $<; \
 153          echo 'GROUP ( $(slibdir)/libm.so$(libm.so-version) ' \
 154               'AS_NEEDED ( $(libdir)/libmvec_nonshared.a $(slibdir)/libmvec.so$(libmvec.so-version) ) )' \
 155         ) > $@.new
 156         mv -f $@.new $@
 157
 158 $(inst_libdir)/libm-$(version).a: $(objpfx)libm.a \
 159                                   $(+force)
 160         $(do-install)
 161
 162 $(inst_libdir)/libm.a: $(common-objpfx)format.lds \
 163                        $(inst_libdir)/libm-$(version).a \
 164                        $(objpfx)../mathvec/libmvec.a \
 165                        $(+force)
 166         (echo '/* GNU ld script'; echo '*/';\
 167          cat $<; \
 168          echo 'GROUP ( $(libdir)/libm-$(version).a $(libdir)/libmvec.a )' \
 169         ) > $@.new
 170         mv -f $@.new $@
 171 endif
 172
 173 # Rules for the test suite.
 174 tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
 175         test-misc test-fpucw test-fpucw-ieee tst-definitions test-tgmath \
 176         test-tgmath-ret bug-nextafter bug-nexttoward bug-tgmath1 \
 177         test-tgmath-int test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan \
 178         test-fenv-tls test-fenv-preserve test-fenv-return test-fenvinline \
 179         test-nearbyint-except test-fenv-clear test-signgam-finite \
 180         test-signgam-finite-c99 test-signgam-finite-c11 \
 181         test-nearbyint-except-2 test-signgam-uchar test-signgam-uchar-init \
 182         test-signgam-uint test-signgam-uint-init test-signgam-ullong \
 183         test-signgam-ullong-init test-nan-overflow test-nan-payload \
 184         test-fexcept test-fexcept-traps test-fesetexcept \
 185         test-fesetexcept-traps test-fetestexceptflag test-femode \
 186         test-femode-traps test-iszero-excess-precision \
 187         test-iseqsig-excess-precision test-flt-eval-method \
 188         test-fp-ilogb-constants test-fp-llogb-constants \
 189         test-fe-snans-always-signal $(tests-static)
 190 tests-static = test-fpucw-static test-fpucw-ieee-static \
 191                test-signgam-uchar-static test-signgam-uchar-init-static \
 192                test-signgam-uint-static test-signgam-uint-init-static \
 193                test-signgam-ullong-static test-signgam-ullong-init-static
 194
 195 ifneq (,$(CXX))
 196 tests += test-math-isinff test-math-iszero
 197 endif
 198
 199 ifneq (no,$(PERL))
 200 libm-vec-tests = $(addprefix test-,$(libmvec-tests))
 201
 202 libm-tests = $(foreach t,$(types),test-$(t) test-$(t)-finite test-i$(t)) \
 203              $(libm-vec-tests)
 204
 205 libm-tests.o = $(addsuffix .o,$(libm-tests))
 206
 207 tests += $(libm-tests)
 208 libm-vec-test-wrappers = $(addsuffix -wrappers, $(libm-vec-tests))
 209 test-extras += $(libm-vec-test-wrappers)
 210 extra-test-objs += $(addsuffix .o, $(libm-vec-test-wrappers))
 211
 212 ulps-file = $(firstword $(wildcard $(sysdirs:%=%/libm-test-ulps)))
 213
 214 $(objpfx)libm-test-ulps.h: $(ulps-file) gen-libm-test.pl
 215         $(make-target-directory)
 216         $(PERL) gen-libm-test.pl -u $< -H $@
 217
 218 libm-test-funcs-auto = acos acosh asin asinh atan atan2 atanh cabs carg cbrt \
 219                        ccos ccosh cexp clog clog10 cos cosh cpow csin csinh \
 220                        csqrt ctan ctanh erf erfc exp exp10 exp2 expm1 fma \
 221                        hypot j0 j1 jn lgamma log log10 log1p log2 pow sin \
 222                        sincos sinh sqrt tan tanh tgamma y0 y1 yn
 223 libm-test-funcs-noauto = cacos cacosh canonicalize casin casinh catan catanh \
 224                          ceil cimag conj copysign cproj creal fabs fdim floor \
 225                          fmax fmaxmag fmin fminmag fmod fpclassify frexp \
 226                          fromfp fromfpx getpayload ilogb iscanonical iseqsig \
 227                          isfinite isgreater isgreaterequal isinf isless \
 228                          islessequal islessgreater isnan isnormal issignaling \
 229                          issubnormal isunordered iszero llogb llrint llround \
 230                          logb lrint lround modf nearbyint nextafter nextdown \
 231                          nexttoward nextup remainder remquo rint round \
 232                          roundeven scalb scalbln scalbn setpayload \
 233                          setpayloadsig signbit significand totalorder \
 234                          totalordermag trunc ufromfp ufromfpx
 235 libm-test-funcs-all = $(libm-test-funcs-auto) $(libm-test-funcs-noauto)
 236 libm-test-c-auto = $(foreach f,$(libm-test-funcs-auto),libm-test-$(f).c)
 237 libm-test-c-noauto = $(foreach f,$(libm-test-funcs-noauto),libm-test-$(f).c)
 238 libm-tests-generated = libm-test-ulps.h libm-have-vector-test.h libm-test.c \
 239                        $(libm-test-c-auto) $(libm-test-c-noauto)
 240 generated += $(libm-tests-generated)
 241
 242 libm-test-c-auto-obj = $(addprefix $(objpfx),$(libm-test-c-auto))
 243 libm-test-c-noauto-obj = $(addprefix $(objpfx),$(libm-test-c-noauto))
 244
 245 $(objpfx)libm-test.c $(libm-test-c-noauto-obj): $(objpfx)libm-test%.c: \
 246                                                 libm-test%.inc gen-libm-test.pl
 247         $(make-target-directory)
 248         $(PERL) gen-libm-test.pl -c $< -a /dev/null -C $@
 249
 250 $(libm-test-c-auto-obj): $(objpfx)libm-test%.c: libm-test%.inc \
 251                                                 gen-libm-test.pl \
 252                                                 auto-libm-test-out%
 253         $(make-target-directory)
 254         $(PERL) gen-libm-test.pl -c $< -a auto-libm-test-out$* -C $@
 255
 256 libm-test-incs = $(foreach f,$(libm-test-funcs-all),libm-test-$(f).inc)
 257
 258 $(objpfx)libm-have-vector-test.h: $(libm-test-incs) gen-libm-have-vector-test.sh
 259         $(make-target-directory)
 260         $(SHELL) gen-libm-have-vector-test.sh $(sort $(libm-test-incs)) > $@
 261 endif
 262
 263 libm-test-fast-math-cflags = -fno-builtin -D__FAST_MATH__ -DTEST_FAST_MATH
 264 libm-test-vec-cflags = $(libm-test-fast-math-cflags) -fno-inline \
 265                        -ffloat-store -D_OPENMP=201307 -Wno-unknown-pragmas
 266
 267 CFLAGS-test-double-vlen2.c = $(libm-test-vec-cflags)
 268
 269 CFLAGS-test-double-vlen4.c = $(libm-test-vec-cflags)
 270 CFLAGS-test-double-vlen4-wrappers.c = $(double-vlen4-arch-ext-cflags)
 271
 272 CFLAGS-test-double-vlen8.c = $(libm-test-vec-cflags)
 273 CFLAGS-test-double-vlen8-wrappers.c = $(double-vlen8-arch-ext-cflags)
 274
 275 CFLAGS-test-float-vlen4.c = $(libm-test-vec-cflags)
 276
 277 CFLAGS-test-float-vlen8.c = $(libm-test-vec-cflags)
 278 CFLAGS-test-float-vlen8-wrappers.c = $(float-vlen8-arch-ext-cflags)
 279
 280 CFLAGS-test-float-vlen16.c = $(libm-test-vec-cflags)
 281 CFLAGS-test-float-vlen16-wrappers.c = $(float-vlen16-arch-ext-cflags)
 282
 283 # The no-inline tests use -fsignaling-nans, and thereby use the
 284 # versions of classification macros that support sNaNs.  The inline
 285 # function tests use the versions of classification macros that may
 286 # raise spurious exceptions for sNaNs, but also do not test for
 287 # exceptions.  Thus both versions of the classification macros are
 288 # validated.
 289 libm-test-no-inline-cflags = -fno-inline -ffloat-store -fno-builtin \
 290                              -fsignaling-nans
 291 libm-test-finite-cflags = $(libm-test-no-inline-cflags) \
 292                           -U__FINITE_MATH_ONLY__ -D__FINITE_MATH_ONLY__=1
 293 CFLAGS-test-float.c = $(libm-test-no-inline-cflags)
 294 CFLAGS-test-float-finite.c = $(libm-test-finite-cflags)
 295 CFLAGS-test-double.c = $(libm-test-no-inline-cflags)
 296 CFLAGS-test-double-finite.c = $(libm-test-finite-cflags)
 297 CFLAGS-test-ldouble.c = $(libm-test-no-inline-cflags)
 298 CFLAGS-test-ldouble-finite.c = $(libm-test-finite-cflags)
 299 CFLAGS-test-tgmath.c = -fno-builtin
 300 # The following testcase uses very long lines (>3 million), so it may take a
 301 # while to compile it. See: http://llvm.org/bugs/show_bug.cgi?id=14106 and
 302 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402
 303 CFLAGS-test-tgmath2.c = -fno-builtin
 304 CFLAGS-test-tgmath-ret.c = -fno-builtin
 305 CFLAGS-test-powl.c = -fno-builtin
 306
 307 CFLAGS-test-snan.c = -fsignaling-nans
 308 CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES \
 309                          $(libm-test-fast-math-cflags)
 310 CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
 311                           $(libm-test-fast-math-cflags)
 312 CPPFLAGS-test-ildouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
 313                           $(libm-test-fast-math-cflags)
 314
 315 CFLAGS-test-signgam-finite.c = -ffinite-math-only
 316 CFLAGS-test-signgam-finite-c99.c = -ffinite-math-only -std=c99
 317 CFLAGS-test-signgam-finite-c11.c = -ffinite-math-only -std=c11
 318 CFLAGS-test-signgam-uchar.c = -std=c99
 319 CFLAGS-test-signgam-uchar-init.c = -std=c99
 320 CFLAGS-test-signgam-uchar-static.c = -std=c99
 321 CFLAGS-test-signgam-uchar-init-static.c = -std=c99
 322 CFLAGS-test-signgam-uint.c = -std=c99
 323 CFLAGS-test-signgam-uint-init.c = -std=c99
 324 CFLAGS-test-signgam-uint-static.c = -std=c99
 325 CFLAGS-test-signgam-uint-init-static.c = -std=c99
 326 CFLAGS-test-signgam-ullong.c = -std=c99
 327 CFLAGS-test-signgam-ullong-init.c = -std=c99
 328 CFLAGS-test-signgam-ullong-static.c = -std=c99
 329 CFLAGS-test-signgam-ullong-init-static.c = -std=c99
 330
 331 CFLAGS-test-math-isinff.cc = -std=gnu++11
 332 CFLAGS-test-math-iszero.cc = -std=gnu++11
 333
 334 CFLAGS-test-iszero-excess-precision.c = -fexcess-precision=standard
 335 CFLAGS-test-iseqsig-excess-precision.c = -fexcess-precision=standard
 336 CFLAGS-test-flt-eval-method.c = -fexcess-precision=standard
 337
 338 CFLAGS-test-fe-snans-always-signal.c = -fsignaling-nans
 339
 340 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
 341 # for error handling in the -lm functions.
 342 install-lib += libieee.a
 343 non-lib.a += libieee.a
 344 extra-objs += libieee.a ieee-math.o
 345
 346 include ../Rules
 347
 348 gen-all-calls = $(gen-libm-calls) $(gen-calls)
 349
 350 generated += $(addsuffix .c,$(call type-foreach,$(gen-all-calls))) \
 351              gen-libm-templates.stmp
 352
 353 # Create wrappers in the math build directory.
 354 $(objpfx)gen-libm-templates.stmp: Makefile
 355         $(make-target-directory)
 356         for gcall in $(gen-all-calls); do                                 \
 357           func=$${gcall%F*}$${gcall#*F};                                  \
 358           for type in $(foreach t,$(types),$(t)__$(type-$(t)-suffix)); do \
 359             suff=$${type#*__};                                            \
 360             type=$${type%__*};                                            \
 361             file=$(objpfx)$${gcall%F*}$${suff}$${gcall#*F}.c;             \
 362             (                                                             \
 363               echo "#include <math-type-macros-$${type}.h>";              \
 364               echo "#include <$${func}_template.c>";                      \
 365             ) > $${file};                                                 \
 366           done;                                                           \
 367         done;                                                             \
 368         echo > $(@)
 369
 370 # Add dependency to ensure the generator runs prior.
 371 $(foreach t, $(call type-foreach, $(gen-all-calls)), \
 372              $(objpfx)$(t).c): $(objpfx)gen-libm-templates.stmp
 373
 374 ifneq (no,$(PERL))
 375 # This must come after the inclusion of sysdeps Makefiles via Rules.
 376 $(addprefix $(objpfx), $(libm-tests.o)): $(addprefix $(objpfx),\
 377                                                      $(libm-tests-generated))
 378
 379 # Run the math programs to automatically generate ULPs files.
 380 .PHONY: regen-ulps
 381
 382 run-regen-ulps = $(test-wrapper-env) \
 383             $(run-program-env) \
 384             $($*-ENV) $(rtld-prefix) $${run}
 385
 386 regen-ulps: $(addprefix $(objpfx),$(libm-tests))
 387         rm -f $(objpfx)ULPs; rm -f $(objpfx)NewUlps; \
 388         cp $(ulps-file) $(objpfx)libm-test-ulps; \
 389         for run in $^; do \
 390           echo "Regenerating ULPs for $${run}"; \
 391           $(run-regen-ulps) -u -o $(objpfx); \
 392           cat $(objpfx)ULPs >> $(objpfx)libm-test-ulps; \
 393           rm $(objpfx)ULPs; \
 394         done; \
 395         $(PERL) gen-libm-test.pl -n $(objpfx)NewUlps \
 396                                  -u $(objpfx)libm-test-ulps; \
 397         echo "Automatic regeneration of ULPs complete."; \
 398         echo "Difference between the current baseline and the new baseline is:";\
 399         diff -urN $(ulps-file) $(objpfx)NewUlps; \
 400         echo "Copy $(objpfx)NewUlps to $(ulps-file) (relative to source)."
 401 else
 402 regen-ulps:
 403         @echo "Automatic regeneration of ULPs requires perl."; \
 404         exit 1;
 405 endif
 406
 407 # The generated sysd-rules file defines rules like this for sources
 408 # coming from sysdeps/ directories.  These rules find the generic sources.
 409 define o-iterator-doit
 410 $(objpfx)m_%$o: s_%.c $(before-compile); $$(compile-command.c)
 411 endef
 412 object-suffixes-left := $(all-object-suffixes)
 413 include $(o-iterator)
 414
 415 # Likewise, for those generated files shared with libc.
 416 define o-iterator-doit
 417 $(objpfx)m_%$o: $(objpfx)s_%.c $(before-compile); $$(compile-command.c)
 418 endef
 419 object-suffixes-left := $(all-object-suffixes)
 420 include $(o-iterator)
 421
 422 # This file defines the default _LIB_VERSION variable that controls
 423 # the error return conventions for the math functions.
 424 CPPFLAGS-s_lib_version.c := -D_POSIX_MODE
 425
 426 # We don't want the fdlibm code to use the inline math functions,
 427 # only the fdlibm code.
 428 math-CPPFLAGS += -D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES
 429
 430 ifneq ($(long-double-fcts),yes)
 431 # The `double' and `long double' types are the same on this machine.
 432 # We won't compile the `long double' code at all.  Tell the `double' code
 433 # to define aliases for the `FUNCl' names.  To avoid type conflicts in
 434 # defining those aliases, tell <math.h> to declare the `FUNCl' names with
 435 # `double' instead of `long double'.
 436 math-CPPFLAGS += -DNO_LONG_DOUBLE -D_Mlong_double_=double
 437 endif
 438
 439 # These files quiet sNaNs in a way that is optimized away without
 440 # -fsignaling-nans.
 441 CFLAGS-s_modf.c += -fsignaling-nans
 442 CFLAGS-s_modff.c += -fsignaling-nans
 443 CFLAGS-s_modfl.c += -fsignaling-nans
 444
 445 # The -lieee library is actually an object file.
 446 # The module just defines the _LIB_VERSION_ variable.
 447 # It's not a library to make sure it is linked in instead of s_lib_version.o.
 448 $(objpfx)libieee.a: $(objpfx)ieee-math.o
 449         rm -f $@
 450         $(patsubst %/,cd % &&,$(objpfx)) \
 451         $(LN_S) $(<F) $(@F)
 452
 453 $(addprefix $(objpfx),\
 454             $(filter-out $(tests-static) $(libm-vec-tests),$(tests))): $(libm)
 455 $(addprefix $(objpfx),$(tests-static)): $(objpfx)libm.a
 456 $(addprefix $(objpfx), $(libm-vec-tests)): $(objpfx)%: $(objpfx)%-wrappers.o \
 457                                                        $(libm) $(libmvec)
 458
 459 gmp-objs = $(patsubst %,$(common-objpfx)stdlib/%.o,\
 460                       add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
 461                       lshift rshift mp_clz_tab udiv_qrnnd inlines \
 462                       $(gmp-sysdep_routines))
 463 $(objpfx)atest-exp: $(gmp-objs)
 464 $(objpfx)atest-sincos: $(gmp-objs)
 465 $(objpfx)atest-exp2: $(gmp-objs)
 466 $(objpfx)test-fenv-tls: $(shared-thread-library)