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2024-01-01Update copyright dates with scripts/update-copyrightsPaul Eggert1-1/+1
2023-01-06Update copyright dates with scripts/update-copyrightsJoseph Myers1-1/+1
2022-01-01Update copyright dates with scripts/update-copyrightsPaul Eggert1-1/+1
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2021-12-13sysdeps: Simplify sin Taylor Series calculationAkila Welihinda1-5/+5
The macro TAYLOR_SIN adds the term `-0.5*da*a^2 + da` in hopes of regaining some precision as a function of da. However the comment says we add the term `-0.5*da*a^2 + 0.5*da` which is different. This fix updates the comment to reflect the code and also simplifies the calculation by replacing `a` with `x` because they always have the same value. Signed-off-by: Akila Welihinda <akilawelihinda@ucla.edu> Reviewed-by: Paul Zimmermann <Paul.Zimmermann@inria.fr>
2021-03-11math: Remove mpa files [BZ #15267]Wilco Dijkstra1-1/+0
Finally remove all mpa related files, headers, declarations, probes, unused tables and update makefiles. Reviewed-By: Paul Zimmermann <Paul.Zimmermann@inria.fr>
2021-01-02Update copyright dates with scripts/update-copyrightsPaul Eggert1-1/+1
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
2020-02-07Remove a comment claiming that sin/cos round correctly.Wilco Dijkstra1-4/+4
2020-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2019-09-07Prefer https to http for gnu.org and fsf.org URLsPaul Eggert1-1/+1
Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-02-06Avoid "inline" after return type in function definitions.Joseph Myers1-8/+4
One group of warnings seen with -Wextra is warnings for static or inline not at the start of a declaration (-Wold-style-declaration). This patch fixes various such cases for inline, ensuring it comes at the start of the declaration (after any static). A common case of the fix is "static inline <type> __always_inline"; the definition of __always_inline starts with __inline, so the natural change is to "static __always_inline <type>". Other cases of the warning may be harder to fix (one pattern is a function definition that gets rewritten to be static by an including file, "#define funcname static wrapped_funcname" or similar), but it seems worth fixing these cases with inline anyway. Tested for x86_64. * elf/dl-load.h (_dl_postprocess_loadcmd): Use __always_inline before return type, without separate inline. * elf/dl-tunables.c (maybe_enable_malloc_check): Likewise. * elf/dl-tunables.h (tunable_is_name): Likewise. * malloc/malloc.c (do_set_trim_threshold): Likewise. (do_set_top_pad): Likewise. (do_set_mmap_threshold): Likewise. (do_set_mmaps_max): Likewise. (do_set_mallopt_check): Likewise. (do_set_perturb_byte): Likewise. (do_set_arena_test): Likewise. (do_set_arena_max): Likewise. (do_set_tcache_max): Likewise. (do_set_tcache_count): Likewise. (do_set_tcache_unsorted_limit): Likewise. * nis/nis_subr.c (count_dots): Likewise. * nptl/allocatestack.c (advise_stack_range): Likewise. * sysdeps/ieee754/dbl-64/s_sin.c (do_cos): Likewise. (do_sin): Likewise. (reduce_sincos): Likewise. (do_sincos): Likewise. * sysdeps/unix/sysv/linux/x86/elision-conf.c (do_set_elision_enable): Likewise. (TUNABLE_CALLBACK_FNDECL): Likewise.
2019-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
2018-09-27Use copysign functions not __copysign functions in glibc libm.Joseph Myers1-2/+2
Continuing the move to use, within libm, public names for libm functions that can be inlined as built-in functions on many architectures, this patch moves calls to __copysign functions to call the corresponding copysign names instead, with asm redirection to __copysign when the calls are not inlined (all cases are inlined except for IBM long double for powerpc soft-float / e500v1). This eliminates the need for an inline function defining __copysign in terms of __builtin_copysign. Tested for x86_64, and with build-many-glibcs.py. * include/math.h [!_ISOMAC && !(__FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0) && !NO_MATH_REDIRECT] (MATH_REDIRECT_BINARY_ARGS): New macro. [!_ISOMAC && !(__FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0) && !NO_MATH_REDIRECT] (copysign): Redirect using MATH_REDIRECT. * sysdeps/alpha/fpu/s_copysign.c: Define NO_MATH_REDIRECT before header inclusion. * sysdeps/alpha/fpu/s_copysignf.c: Likewise. * sysdeps/ieee754/dbl-64/s_copysign.c: Likewise. * sysdeps/ieee754/float128/s_copysignf128.c: Likewise. * sysdeps/ieee754/flt-32/s_copysignf.c: Likewise. * sysdeps/ieee754/ldbl-128/s_copysignl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_copysignl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_copysignl.c: Likewise. * sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign.c: Likewise. * sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysignf.c: Likewise. * sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c: Likewise. * sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c: Likewise. * sysdeps/riscv/rvd/s_copysign.c: Likewise. * sysdeps/riscv/rvf/s_copysignf.c: Likewise. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign.c: Likewise. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf.c: Likewise. * sysdeps/generic/math_private_calls.h [!__MATH_DECLARING_LONG_DOUBLE || !NO_LONG_DOUBLE] (__copysign): Do not declare and define as an inline function. * math/divtc3.c (__divtc3): Use copysign functions instead of __copysign variants. * math/multc3.c (__multc3): Likewise. * sysdeps/generic/math-type-macros.h (M_COPYSIGN): Likewise. * sysdeps/ieee754/dbl-64/e_atan2.c (signArctan2): Likewise. * sysdeps/ieee754/dbl-64/e_atanh.c (__ieee754_atanh): Likewise. * sysdeps/ieee754/dbl-64/e_gamma_r.c (__ieee754_gamma_r): Likewise. * sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_jn): Likewise. (__ieee754_yn): Likewise. * sysdeps/ieee754/dbl-64/s_asinh.c (__asinh): Likewise. * sysdeps/ieee754/dbl-64/s_atan.c (__signArctan): Likewise. * sysdeps/ieee754/dbl-64/s_scalbln.c (__scalbln): Likewise. * sysdeps/ieee754/dbl-64/s_scalbn.c (__scalbn): Likewise. * sysdeps/ieee754/dbl-64/s_sin.c (do_sin): Likewise. (__sin): Likewise. * sysdeps/ieee754/dbl-64/s_sincos.c (__sincos): Likewise. * sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c (__nearbyint): Likewise. * sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c (__scalbln): Likewise. * sysdeps/ieee754/dbl-64/wordsize-64/s_scalbn.c (__scalbn): Likewise. * sysdeps/ieee754/flt-32/e_atanhf.c (__ieee754_atanhf): Likewise. * sysdeps/ieee754/flt-32/e_gammaf_r.c (__ieee754_gammaf_r): Likewise. * sysdeps/ieee754/flt-32/e_jnf.c (__ieee754_jnf): Likewise. (__ieee754_ynf): Likewise. * sysdeps/ieee754/flt-32/s_asinhf.c (__asinhf): Likewise. * sysdeps/ieee754/flt-32/s_scalbnf.c (__scalbnf): Likewise. * sysdeps/ieee754/k_standard.c (__kernel_standard): Likewise. * sysdeps/ieee754/ldbl-128/e_gammal_r.c (__ieee754_gammal_r): Likewise. * sysdeps/ieee754/ldbl-128/e_jnl.c (__ieee754_jnl): Likewise. (__ieee754_ynl): Likewise. * sysdeps/ieee754/ldbl-128/s_scalblnl.c (__scalblnl): Likewise. * sysdeps/ieee754/ldbl-128/s_scalbnl.c (__scalbnl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (__ieee754_gammal_r): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_jnl.c (__ieee754_jnl): Likewise. (__ieee754_ynl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_fmal.c (__fmal): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_scalblnl.c (__scalblnl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_scalbnl.c (__scalbnl): Likewise. * sysdeps/ieee754/ldbl-96/e_gammal_r.c (__ieee754_gammal_r): Likewise. * sysdeps/ieee754/ldbl-96/e_jnl.c (__ieee754_jnl): Likewise. (__ieee754_ynl) * sysdeps/ieee754/ldbl-96/s_asinhl.c (__asinhl): Likewise. * sysdeps/ieee754/ldbl-96/s_scalblnl.c (__scalblnl): Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-copysign.c (copysignl): Likewise. * sysdeps/powerpc/power5+/fpu/s_modf.c (__modf): Likewise. * sysdeps/powerpc/power5+/fpu/s_modff.c (__modff): Likewise.
2018-09-03Do not include fenv_private.h in math_private.h.Joseph Myers1-0/+1
Continuing the clean-up related to the catch-all math_private.h header, this patch stops math_private.h from including fenv_private.h. Instead, fenv_private.h is included directly from those users of math_private.h that also used interfaces from fenv_private.h. No attempt is made to remove unused includes of math_private.h, but that is a natural followup. (However, since math_private.h sometimes defines optimized versions of math.h interfaces or __* variants thereof, as well as defining its own interfaces, I think it might make sense to get all those optimized versions included from include/math.h, not requiring a separate header at all, before eliminating unused math_private.h includes - that avoids a file quietly becoming less-optimized if someone adds a call to one of those interfaces without restoring a math_private.h include to that file.) There is still a pitfall that if code uses plain fe* and __fe* interfaces, but only includes fenv.h and not fenv_private.h or (before this patch) math_private.h, it will compile on platforms with exceptions and rounding modes but not get the optimized versions (and possibly not compile) on platforms without exception and rounding mode support, so making it easy to break the build for such platforms accidentally. I think it would be most natural to move the inlines / macros for fe* and __fe* in the case of no exceptions and rounding modes into include/fenv.h, so that all code including fenv.h with _ISOMAC not defined automatically gets them. Then fenv_private.h would be purely the header for the libc_fe*, SET_RESTORE_ROUND etc. internal interfaces and the risk of breaking the build on other platforms than the one you tested on because of a missing fenv_private.h include would be much reduced (and there would be some unused fenv_private.h includes to remove along with unused math_private.h includes). Tested for x86_64 and x86, and tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by this patch. * sysdeps/generic/math_private.h: Do not include <fenv_private.h>. * math/fromfp.h: Include <fenv_private.h>. * math/math-narrow.h: Likewise. * math/s_cexp_template.c: Likewise. * math/s_csin_template.c: Likewise. * math/s_csinh_template.c: Likewise. * math/s_ctan_template.c: Likewise. * math/s_ctanh_template.c: Likewise. * math/s_iseqsig_template.c: Likewise. * math/w_acos_compat.c: Likewise. * math/w_acosf_compat.c: Likewise. * math/w_acosl_compat.c: Likewise. * math/w_asin_compat.c: Likewise. * math/w_asinf_compat.c: Likewise. * math/w_asinl_compat.c: Likewise. * math/w_ilogb_template.c: Likewise. * math/w_j0_compat.c: Likewise. * math/w_j0f_compat.c: Likewise. * math/w_j0l_compat.c: Likewise. * math/w_j1_compat.c: Likewise. * math/w_j1f_compat.c: Likewise. * math/w_j1l_compat.c: Likewise. * math/w_jn_compat.c: Likewise. * math/w_jnf_compat.c: Likewise. * math/w_llogb_template.c: Likewise. * math/w_log10_compat.c: Likewise. * math/w_log10f_compat.c: Likewise. * math/w_log10l_compat.c: Likewise. * math/w_log2_compat.c: Likewise. * math/w_log2f_compat.c: Likewise. * math/w_log2l_compat.c: Likewise. * math/w_log_compat.c: Likewise. * math/w_logf_compat.c: Likewise. * math/w_logl_compat.c: Likewise. * sysdeps/aarch64/fpu/feholdexcpt.c: Likewise. * sysdeps/aarch64/fpu/fesetround.c: Likewise. * sysdeps/aarch64/fpu/fgetexcptflg.c: Likewise. * sysdeps/aarch64/fpu/ftestexcept.c: Likewise. * sysdeps/ieee754/dbl-64/e_atan2.c: Likewise. * sysdeps/ieee754/dbl-64/e_exp.c: Likewise. * sysdeps/ieee754/dbl-64/e_exp2.c: Likewise. * sysdeps/ieee754/dbl-64/e_gamma_r.c: Likewise. * sysdeps/ieee754/dbl-64/e_jn.c: Likewise. * sysdeps/ieee754/dbl-64/e_pow.c: Likewise. * sysdeps/ieee754/dbl-64/e_remainder.c: Likewise. * sysdeps/ieee754/dbl-64/e_sqrt.c: Likewise. * sysdeps/ieee754/dbl-64/gamma_product.c: Likewise. * sysdeps/ieee754/dbl-64/lgamma_neg.c: Likewise. * sysdeps/ieee754/dbl-64/s_atan.c: Likewise. * sysdeps/ieee754/dbl-64/s_fma.c: Likewise. * sysdeps/ieee754/dbl-64/s_fmaf.c: Likewise. * sysdeps/ieee754/dbl-64/s_llrint.c: Likewise. * sysdeps/ieee754/dbl-64/s_llround.c: Likewise. * sysdeps/ieee754/dbl-64/s_lrint.c: Likewise. * sysdeps/ieee754/dbl-64/s_lround.c: Likewise. * sysdeps/ieee754/dbl-64/s_nearbyint.c: Likewise. * sysdeps/ieee754/dbl-64/s_sin.c: Likewise. * sysdeps/ieee754/dbl-64/s_sincos.c: Likewise. * sysdeps/ieee754/dbl-64/s_tan.c: Likewise. * sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c: Likewise. * sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c: Likewise. * sysdeps/ieee754/dbl-64/x2y2m1.c: Likewise. * sysdeps/ieee754/float128/float128_private.h: Likewise. * sysdeps/ieee754/flt-32/e_gammaf_r.c: Likewise. * sysdeps/ieee754/flt-32/e_j1f.c: Likewise. * sysdeps/ieee754/flt-32/e_jnf.c: Likewise. * sysdeps/ieee754/flt-32/lgamma_negf.c: Likewise. * sysdeps/ieee754/flt-32/s_llrintf.c: Likewise. * sysdeps/ieee754/flt-32/s_llroundf.c: Likewise. * sysdeps/ieee754/flt-32/s_lrintf.c: Likewise. * sysdeps/ieee754/flt-32/s_lroundf.c: Likewise. * sysdeps/ieee754/flt-32/s_nearbyintf.c: Likewise. * sysdeps/ieee754/k_standardl.c: Likewise. * sysdeps/ieee754/ldbl-128/e_expl.c: Likewise. * sysdeps/ieee754/ldbl-128/e_gammal_r.c: Likewise. * sysdeps/ieee754/ldbl-128/e_j1l.c: Likewise. * sysdeps/ieee754/ldbl-128/e_jnl.c: Likewise. * sysdeps/ieee754/ldbl-128/gamma_productl.c: Likewise. * sysdeps/ieee754/ldbl-128/lgamma_negl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_fmal.c: Likewise. * sysdeps/ieee754/ldbl-128/s_llrintl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_llroundl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_lrintl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_lroundl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_nearbyintl.c: Likewise. * sysdeps/ieee754/ldbl-128/x2y2m1l.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_expl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_j1l.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_jnl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/lgamma_negl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_fmal.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_llrintl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_llroundl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_lrintl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_lroundl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_rintl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/x2y2m1l.c: Likewise. * sysdeps/ieee754/ldbl-96/e_gammal_r.c: Likewise. * sysdeps/ieee754/ldbl-96/e_jnl.c: Likewise. * sysdeps/ieee754/ldbl-96/gamma_productl.c: Likewise. * sysdeps/ieee754/ldbl-96/lgamma_negl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_fma.c: Likewise. * sysdeps/ieee754/ldbl-96/s_fmal.c: Likewise. * sysdeps/ieee754/ldbl-96/s_llrintl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_llroundl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_lrintl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_lroundl.c: Likewise. * sysdeps/ieee754/ldbl-96/x2y2m1l.c: Likewise. * sysdeps/powerpc/fpu/e_sqrt.c: Likewise. * sysdeps/powerpc/fpu/e_sqrtf.c: Likewise. * sysdeps/riscv/rv64/rvd/s_ceil.c: Likewise. * sysdeps/riscv/rv64/rvd/s_floor.c: Likewise. * sysdeps/riscv/rv64/rvd/s_nearbyint.c: Likewise. * sysdeps/riscv/rv64/rvd/s_round.c: Likewise. * sysdeps/riscv/rv64/rvd/s_roundeven.c: Likewise. * sysdeps/riscv/rv64/rvd/s_trunc.c: Likewise. * sysdeps/riscv/rvd/s_finite.c: Likewise. * sysdeps/riscv/rvd/s_fmax.c: Likewise. * sysdeps/riscv/rvd/s_fmin.c: Likewise. * sysdeps/riscv/rvd/s_fpclassify.c: Likewise. * sysdeps/riscv/rvd/s_isinf.c: Likewise. * sysdeps/riscv/rvd/s_isnan.c: Likewise. * sysdeps/riscv/rvd/s_issignaling.c: Likewise. * sysdeps/riscv/rvf/fegetround.c: Likewise. * sysdeps/riscv/rvf/feholdexcpt.c: Likewise. * sysdeps/riscv/rvf/fesetenv.c: Likewise. * sysdeps/riscv/rvf/fesetround.c: Likewise. * sysdeps/riscv/rvf/feupdateenv.c: Likewise. * sysdeps/riscv/rvf/fgetexcptflg.c: Likewise. * sysdeps/riscv/rvf/ftestexcept.c: Likewise. * sysdeps/riscv/rvf/s_ceilf.c: Likewise. * sysdeps/riscv/rvf/s_finitef.c: Likewise. * sysdeps/riscv/rvf/s_floorf.c: Likewise. * sysdeps/riscv/rvf/s_fmaxf.c: Likewise. * sysdeps/riscv/rvf/s_fminf.c: Likewise. * sysdeps/riscv/rvf/s_fpclassifyf.c: Likewise. * sysdeps/riscv/rvf/s_isinff.c: Likewise. * sysdeps/riscv/rvf/s_isnanf.c: Likewise. * sysdeps/riscv/rvf/s_issignalingf.c: Likewise. * sysdeps/riscv/rvf/s_nearbyintf.c: Likewise. * sysdeps/riscv/rvf/s_roundevenf.c: Likewise. * sysdeps/riscv/rvf/s_roundf.c: Likewise. * sysdeps/riscv/rvf/s_truncf.c: Likewise.
2018-05-10Move math_check_force_underflow macros to separate math-underflow.h.Joseph Myers1-0/+1
This patch continues cleaning up math_private.h by moving the math_check_force_underflow set of macros to a separate header math-underflow.h. This header is included by the files that need it rather than from math_private.h. Moving these macros to a separate file removes the math_private.h uses of macros from float.h, so the inclusion of float.h in math_private.h is also removed; files that were depending on that inclusion are fixed to include float.h directly. The inclusion of math-barriers.h from math_private.h will be removed in a separate patch. Tested for x86_64 and x86. Also tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by this patch. * math/math-underflow.h: New file. * sysdeps/generic/math_private.h: Do not include <float.h>. (fabs_tg): Remove macro. Moved to math-underflow.h. (min_of_type_f): Likewise. (min_of_type_): Likewise. (min_of_type_l): Likewise. (min_of_type_f128): Likewise. (min_of_type): Likewise. (math_check_force_underflow): Likewise. (math_check_force_underflow_nonneg): Likewise. (math_check_force_underflow_complex): Likewise. * math/e_exp2_template.c: Include <math-underflow.h>. * math/k_casinh_template.c: Likewise. * math/s_catan_template.c: Likewise. * math/s_catanh_template.c: Likewise. * math/s_ccosh_template.c: Likewise. * math/s_cexp_template.c: Likewise. * math/s_clog10_template.c: Likewise. * math/s_clog_template.c: Likewise. * math/s_csin_template.c: Likewise. * math/s_csinh_template.c: Likewise. * math/s_csqrt_template.c: Likewise. * math/s_ctan_template.c: Likewise. * math/s_ctanh_template.c: Likewise. * sysdeps/ieee754/dbl-64/e_asin.c: Likewise. * sysdeps/ieee754/dbl-64/e_atanh.c: Likewise. * sysdeps/ieee754/dbl-64/e_exp2.c: Likewise. * sysdeps/ieee754/dbl-64/e_gamma_r.c: Likewise. * sysdeps/ieee754/dbl-64/e_hypot.c: Likewise. * sysdeps/ieee754/dbl-64/e_j1.c: Likewise. * sysdeps/ieee754/dbl-64/e_jn.c: Likewise. * sysdeps/ieee754/dbl-64/e_pow.c: Likewise. * sysdeps/ieee754/dbl-64/e_sinh.c: Likewise. * sysdeps/ieee754/dbl-64/s_asinh.c: Likewise. * sysdeps/ieee754/dbl-64/s_atan.c: Likewise. * sysdeps/ieee754/dbl-64/s_erf.c: Likewise. * sysdeps/ieee754/dbl-64/s_expm1.c: Likewise. * sysdeps/ieee754/dbl-64/s_log1p.c: Likewise. * sysdeps/ieee754/dbl-64/s_sin.c: Likewise. * sysdeps/ieee754/dbl-64/s_sincos.c: Likewise. * sysdeps/ieee754/dbl-64/s_tan.c: Likewise. * sysdeps/ieee754/dbl-64/s_tanh.c: Likewise. * sysdeps/ieee754/flt-32/e_asinf.c: Likewise. * sysdeps/ieee754/flt-32/e_atanhf.c: Likewise. * sysdeps/ieee754/flt-32/e_gammaf_r.c: Likewise. * sysdeps/ieee754/flt-32/e_j1f.c: Likewise. * sysdeps/ieee754/flt-32/e_jnf.c: Likewise. * sysdeps/ieee754/flt-32/e_sinhf.c: Likewise. * sysdeps/ieee754/flt-32/k_sinf.c: Likewise. * sysdeps/ieee754/flt-32/k_tanf.c: Likewise. * sysdeps/ieee754/flt-32/s_asinhf.c: Likewise. * sysdeps/ieee754/flt-32/s_atanf.c: Likewise. * sysdeps/ieee754/flt-32/s_erff.c: Likewise. * sysdeps/ieee754/flt-32/s_expm1f.c: Likewise. * sysdeps/ieee754/flt-32/s_log1pf.c: Likewise. * sysdeps/ieee754/flt-32/s_tanhf.c: Likewise. * sysdeps/ieee754/ldbl-128/e_asinl.c: Likewise. * sysdeps/ieee754/ldbl-128/e_atanhl.c: Likewise. * sysdeps/ieee754/ldbl-128/e_expl.c: Likewise. * sysdeps/ieee754/ldbl-128/e_gammal_r.c: Likewise. * sysdeps/ieee754/ldbl-128/e_hypotl.c: Likewise. * sysdeps/ieee754/ldbl-128/e_j1l.c: Likewise. * sysdeps/ieee754/ldbl-128/e_jnl.c: Likewise. * sysdeps/ieee754/ldbl-128/e_sinhl.c: Likewise. * sysdeps/ieee754/ldbl-128/k_sincosl.c: Likewise. * sysdeps/ieee754/ldbl-128/k_sinl.c: Likewise. * sysdeps/ieee754/ldbl-128/k_tanl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_asinhl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_atanl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_erfl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_expm1l.c: Likewise. * sysdeps/ieee754/ldbl-128/s_log1pl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_tanhl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_asinl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_atanhl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_hypotl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_j1l.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_jnl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_powl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_sinhl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/k_sincosl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/k_sinl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/k_tanl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_asinhl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_atanl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_erfl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_fmal.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_tanhl.c: Likewise. * sysdeps/ieee754/ldbl-96/e_asinl.c: Likewise. * sysdeps/ieee754/ldbl-96/e_atanhl.c: Likewise. * sysdeps/ieee754/ldbl-96/e_gammal_r.c: Likewise. * sysdeps/ieee754/ldbl-96/e_hypotl.c: Likewise. * sysdeps/ieee754/ldbl-96/e_j1l.c: Likewise. * sysdeps/ieee754/ldbl-96/e_jnl.c: Likewise. * sysdeps/ieee754/ldbl-96/e_sinhl.c: Likewise. * sysdeps/ieee754/ldbl-96/k_sinl.c: Likewise. * sysdeps/ieee754/ldbl-96/k_tanl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_asinhl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_erfl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_tanhl.c: Likewise. * sysdeps/powerpc/fpu/e_hypot.c: Likewise. * sysdeps/x86/fpu/powl_helper.c: Likewise. * sysdeps/ieee754/dbl-64/s_nextup.c: Include <float.h>. * sysdeps/ieee754/flt-32/s_nextupf.c: Likewise. * sysdeps/ieee754/ldbl-128/s_nextupl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_nextupl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_nextupl.c: Likewise.
2018-04-03[PATCH 7/7] sin/cos slow paths: refactor sincos implementationWilco Dijkstra1-26/+3
Refactor the sincos implementation - rather than rely on odd partial inlining of preprocessed portions from sin and cos, explicitly write out the cases. This makes sincos much easier to maintain and provides an additional 16-20% speedup between 0 and 2^27. The overall speedup of sincos is 48% over this range. Between 0 and PI it is 66% faster. * sysdeps/ieee754/dbl-64/s_sin.c (__sin): Cleanup ifdefs. (__cos): Likewise. * sysdeps/ieee754/dbl-64/s_sin.c (__sincos): Refactor using the same logic as sin and cos.
2018-04-03[PATCH 6/7] sin/cos slow paths: refactor duplicated code into dosinWilco Dijkstra1-27/+13
Refactor duplicated code into do_sin. Since all calls to do_sin use copysign to set the sign of the result, move it inside do_sin. Small inputs use a separate polynomial, so move this into do_sin as well (the check is based on the more conservative case when doing large range reduction, but could be relaxed). * sysdeps/ieee754/dbl-64/s_sin.c (do_sin): Use TAYLOR_SIN for small inputs. Return correct sign. (do_sincos): Remove small input check before do_sin, let do_sin set the sign. (__sin): Likewise. (__cos): Likewise.
2018-04-03[PATCH 5/7] sin/cos slow paths: remove unused slowpath functionsWilco Dijkstra1-444/+3
Remove all unused slowpath functions. * sysdeps/ieee754/dbl-64/s_sin.c (TAYLOR_SLOW): Remove. (do_cos_slow): Likewise. (do_sin_slow): Likewise. (reduce_and_compute): Likewise. (slow): Likewise. (slow1): Likewise. (slow2): Likewise. (sloww): Likewise. (sloww1): Likewise. (sloww2): Likewise. (bslow): Likewise. (bslow1): Likewise. (bslow2): Likewise. (cslow2): Likewise.
2018-04-03[PATCH 4/7] sin/cos slow paths: remove slow paths from huge range reductionWilco Dijkstra1-31/+29
For huge inputs use the improved do_sincos function as well. Now no cases use the correction factor returned by do_sin, do_cos and TAYLOR_SIN, so remove it. * sysdeps/ieee754/dbl-64/s_sin.c (TAYLOR_SIN): Remove cor parameter. (do_cos): Remove corp parameter and calculations. (do_sin): Likewise. (do_sincos): Remove cor variable. (__sin): Use do_sincos for huge inputs. (__cos): Likewise. * sysdeps/ieee754/dbl-64/s_sincos.c (__sincos): Likewise. (reduce_and_compute_sincos): Remove unused function.
2018-04-03[PATCH 3/7] sin/cos slow paths: remove slow paths from small range reductionWilco Dijkstra1-50/+44
This patch improves the accuracy of the range reduction. When the input is large (2^27) and very close to a multiple of PI/2, using 110 bits of PI is not enough. Improve range reduction accuracy to 136 bits. As a result the special checks for results close to zero can be removed. The ULP of the polynomials is at worst 0.55ULP, so there is no reason for the slow functions, and they can be removed. * sysdeps/ieee754/dbl-64/s_sin.c (reduce_sincos_1): Rename to reduce_sincos, improve accuracy to 136 bits. (do_sincos_1): Rename to do_sincos, remove fallbacks to slow functions. (__sin): Use improved reduction and simplified do_sincos calculation. (__cos): Likewise. * sysdeps/ieee754/dbl-64/s_sincos.c (__sincos): Likewise.
2018-04-03[PATCH 2/7] sin/cos slow paths: remove large range reductionWilco Dijkstra1-93/+2
This patch removes the large range reduction code and defers to the huge range reduction code. The first level range reducer supports inputs up to 2^27, which is way too large given that inputs for sin/cos are typically small (< 10), and optimizing for a smaller range would give a significant speedup. Input values above 2^27 are practically never used, so there is no reason for supporting range reduction between 2^27 and 2^48. Removing it significantly simplifies code and enables further speedups. There is about a 2.3x slowdown in this range due to __branred being extremely slow (a better algorithm could easily more than double performance). * sysdeps/ieee754/dbl-64/s_sin.c (reduce_sincos_2): Remove function. (do_sincos_2): Likewise. (__sin): Remove middle range reduction case. (__cos): Likewise. * sysdeps/ieee754/dbl-64/s_sincos.c (__sincos): Remove middle range reduction case.
2018-04-03[PATCH 1/7] sin/cos slow paths: avoid slow paths for small inputsWilco Dijkstra1-26/+14
This series of patches removes the slow patchs from sin, cos and sincos. Besides greatly simplifying the implementation, the new version is also much faster for inputs up to PI (41% faster) and for large inputs needing range reduction (27% faster). ULP is ~0.55 with no errors found after testing 1.6 billion inputs across most of the range with mpsin and mpcos. The number of incorrectly rounded results (ie. ULP >0.5) is at most ~2750 per million inputs between 0.125 and 0.5, the average is ~850 per million between 0 and PI. Tested on AArch64 and x86_64 with no regressions. The first patch removes the slow paths for the cases where the input is small and doesn't require range reduction. Update ULP tables for sin, cos and sincos on AArch64 and x86_64. * sysdeps/aarch64/libm-test-ulps: Update ULP for sin, cos, sincos. * sysdeps/ieee754/dbl-64/s_sin.c (__sin): Remove slow paths for small inputs. (__cos): Likewise. * sysdeps/x86_64/fpu/libm-test-ulps: Update ULP for sin, cos, sincos.
2018-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
2017-09-29Use libm_alias_double for some dbl-64 functions.Joseph Myers1-10/+3
Continuing the move of libm aliases to common macros that can create _FloatN / _FloatNx aliases in future, this patch converts some dbl-64 functions to using libm_alias_double, thereby eliminating the need for some ldbl-opt wrappers. This patch deliberately limits what functions are converted so that it can be verified by comparison of stipped binaries. Specifically, atan and tan are excluded because they first need converting to being weak aliases; fma is omitted as it has additional complications with versions in other directories (removing the ldbl-opt version can e.g. cause the ldbl-128 version to be used instead of dbl-64); and functions that have both dbl-64/wordsize-64 and ldbl-opt versions are excluded because ldbl-opt currently always wraps dbl-64 function versions, so changing those will result in platforms using both ldbl-opt and dbl-64/wordsize-64 (i.e. alpha) starting to use the dbl-64/wordsize-64 versions of those functions (which is good, as an optimization, but still best separated from the present patch to get better validation). Tested for x86_64, and tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by the patch. * sysdeps/ieee754/dbl-64/s_asinh.c: Include <libm-alias-double.h>. (asinh): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_cbrt.c: Include <libm-alias-double.h>. (cbrt): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_copysign.c: Include <libm-alias-double.h>. (copysign): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_erf.c: Include <libm-alias-double.h>. (erf): Define using libm_alias_double. (erfc): Likewise. * sysdeps/ieee754/dbl-64/s_expm1.c: Include <libm-alias-double.h>. (expm1): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_fabs.c: Include <libm-alias-double.h>. (fabs): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_fromfp.c (fromfp): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_fromfp_main.c: Include <libm-alias-double.h>. * sysdeps/ieee754/dbl-64/s_fromfpx.c (fromfpx): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_getpayload.c: Include <libm-alias-double.h>. (getpayload): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_llrint.c: Include <libm-alias-double.h>. (llrint): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_lrint.c: Include <libm-alias-double.h>. (lrint): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_nextup.c: Include <libm-alias-double.h>. (nextup): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_roundeven.c: Include <libm-alias-double.h>. (roundeven): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_setpayload.c (setpayload): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_setpayload_main.c: Include <libm-alias-double.h>. * sysdeps/ieee754/dbl-64/s_setpayloadsig.c (setpayloadsig): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_sin.c: Include <libm-alias-double.h>. (cos): Define using libm_alias_double. (sin): Likewise. * sysdeps/ieee754/dbl-64/s_sincos.c: Include <libm-alias-double.h>. (sincos): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_tanh.c: Include <libm-alias-double.h>. (tanh): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_totalorder.c: Include <libm-alias-double.h>. (totalorder): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_totalordermag.c: Include <libm-alias-double.h>. (totalordermag): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_ufromfp.c (ufromfp): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_ufromfpx.c (ufromfpx): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/wordsize-64/s_getpayload.c: Include <libm-alias-double.h>. (getpayload): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/wordsize-64/s_roundeven.c: Include <libm-alias-double.h>. (roundeven): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/wordsize-64/s_setpayload_main.c: Include <libm-alias-double.h>. * sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c: Include <libm-alias-double.h>. (totalorder): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c: Include <libm-alias-double.h>. (totalordermag): Define using libm_alias_double. * sysdeps/ieee754/ldbl-opt/s_copysign.c (copysignl): Only define libc compat symbol here. * sysdeps/ieee754/ldbl-opt/s_asinh.c: Remove file. * sysdeps/ieee754/ldbl-opt/s_cbrt.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_erf.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_expm1.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_fabs.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_llrint.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_lrint.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_sin.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_sincos.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_tanh.c: Likewise.
2017-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2016-10-06Update comments for some functions in s_sin.cSiddhesh Poyarekar1-22/+17
Update comments for some functions to bring them in sync with what the functions are actually doing.
2016-10-06Make quadrant shift a boolean in reduce_and_compute in s_sin.cSiddhesh Poyarekar1-4/+4
Like the previous change, make the quadrant shift a boolean to make it clearer that we will do at most a single rotation of the quadrants to compute the cosine from the sine function. This does not affect codegen.
2016-10-06Check n instead of k1 to decide on sign of sin/cos resultSiddhesh Poyarekar1-1/+1
For k1 in 1 and 3, n can only have values of 0 and 2, so checking k1 & 2 is equivalent to checking n & 2. We prefer the latter so that we don't use k1 for anything other than selecting the quadrant in do_sincos_1, thus dropping it completely. The previous logic was: "Compute sine for the value and based on the new rotated quadrant (k1) negate the value if we're in the fourth quadrant." With this change, the logic now is: "Compute sine for the value and negate it if we were either (1) in the fourth quadrant or (2) we actually wanted the cosine and were in the third quadrant." * sysdeps/ieee754/dbl-64/s_sin.c (do_sincos_1): Check N instead of K1.
2016-10-06Make the quadrant shift K a bool in do_sincos_* functionsSiddhesh Poyarekar1-19/+19
The do_sincos_* functions are helpers to compute sin/cos, where they get cosine by computing sine for the next quadrant. This is decided with the value of K passed to it, which is the amount by which to shift the quadrant. Since we will only need the shift to be 0 or 1, we make K a bool to make that explicit. * sysdeps/ieee754/dbl-64/s_sin.c (do_sincos_1): Rename K to SHIFT_QUADRANT and make it bool. (do_sincos_2): Likewise. (sloww): Likewise. (sloww1): Likewise. (__sin): Adjust calls to do_sincos_1 and do_sincos_2. (__cos): Likewise.
2016-09-30Use copysign instead of ternary for some sin/cos input rangesSiddhesh Poyarekar1-13/+13
These are remaining cases where we can deduce and conclude that the sign of the result should be the same as the sign of the input being checked. For example, for sin(x), the sign of the result is the same as the result itself for x < pi. Likewise, for sine values where x after range reduction falls into this range and its sign is preserved. * sysdeps/ieee754/dbl-64/s_sin.c (do_sincos_1): Use copysign instead of ternary condition. (do_sincos_2): Likewise. (__sin): Likewise. (__cos): Likewise. (slow): Likewise. (sloww): Likewise. (sloww1): Likewise. (bsloww): Likewise. (bsloww1): Likewise.
2016-09-30Use copysign instead of ternary conditions for positive constantsSiddhesh Poyarekar1-19/+19
This is the first very simple substitution of ternary conditions for correction adjustments with __copysign for positive constants. * sysdeps/ieee754/dbl-64/s_sin.c (do_cos_slow): use copysign instead of ternary condition. (do_sin_slow): Likewise. (do_sincos_1): Likewise. (do_sincos_2): Likewise. (__cos): Likewise. (sloww): Likewise. (sloww1): Likewise. (sloww2): Likewise. (bsloww): Likewise. (bsloww1): Likewise. (bsloww2): Likewise.
2016-09-30consolidate sign checks for slow2Siddhesh Poyarekar1-8/+10
Simplify the code a bit by consolidating sign checks in slow1 and slow2 into __sin at the higher level. * sysdeps/ieee754/dbl-64/s_sin.c (slow1): Consolidate sign check from here... (slow2): ... and here... (__sin): ... to here.
2016-09-02Inline all support functions for sin and cosSiddhesh Poyarekar1-24/+28
The support functions for sin and cos have a lot of identical functionality, so inlining them gives a pretty decent jump in functionality: ~19% in the sincos function. On SPEC2006 this translates to about 2.1% in the tonto test. * sysdeps/ieee754/dbl-64/s_sin.c (do_cos): Mark as inline. (do_cos_slow): Likewise. (do_sin): Likewise. (do_sin_slow): Likewise. (slow): Likewise. (slow1): Likewise. (slow2): Likewise. (sloww): Likewise. (sloww1): Likewise. (sloww2): Likewise. (bsloww): Likewise. (bsloww1): Likewise. (bsloww2): Likewise. (cslow2): Likewise.
2016-09-02Use do_sin for sin(x) where 0.25 < |x| < 0.855469Siddhesh Poyarekar1-18/+3
The only code looks slightly different from do_sin but on closer examination, should give exactly the same result. Drop it in favour of the do_sin function call. * sysdeps/ieee754/dbl-64/s_sin.c (__sin): Use do_sin.
2016-09-02Consolidate input partitioning into do_cos and do_sinSiddhesh Poyarekar1-109/+82
All calls to do_cos are preceded by code that partitions x into a larger double that gives an offset into the sincos table and a smaller double that is used in a polynomial computation. Consolidate all of them into do_cos and do_sin to reduce code duplication. * sysdeps/ieee754/dbl-64/s_sin.c (do_cos): Accept X and DX as input arguments. Consolidate input partitioning from callers here. (do_cos_slow): Likewise. (do_sin): Likewise. (do_sin_slow): Likewise. (do_sincos_1): Remove the no longer necessary input partitioning. (do_sincos_2): Likewise. (__sin): Likewise. (__cos): Likewise. (slow1): Likewise. (slow2): Likewise. (sloww1): Likewise. (sloww2): Likewise. (bsloww1): Likewise. (bsloww2): Likewise. (cslow2): Likewise.
2016-08-30Use fabs(x) instead of branching on signedness of input to sin and cosSiddhesh Poyarekar1-148/+85
The sin and cos code is inconsistent about its use of fabs to get the absolute value of X where in some places it conditionalizes the code while in others it uses fabs. fabs seems to be a better candidate in most cases because it avoids a branch. Similarly there is an attempt to make it easier for the compiler to emit conditional assignment instructions (like fcsel on aarch64) where it can, by isolating conditional assignment constructs from the rest of the expression. A further benefit of this change is to identify common constructs across functions and consolidate them in future patches. * sysdeps/ieee754/dbl-64/s_sin.c (do_cos_slow): Use ternary instead of if/else. (do_sin_slow): Likewise. (do_sincos_1): Use fabs instead of if/else. (do_sincos_2): Likewise. (__sin): Likewise. (__cos): Likewise. (slow2): Likewise. (sloww): Likewise. (sloww1): Likewise. Drop argument M. (sloww2): Use fabs instead of if/else. (bsloww): Likewise. (bsloww1): Likewise. (bsloww2): Likewise.
2016-08-30Add fall through commentsSiddhesh Poyarekar1-0/+2
Add fall through comments I had missed writing in previously.
2016-08-30Consolidate reduce_and_compute codeSiddhesh Poyarekar1-17/+14
This patch reshuffles the reduce_and_compute code so that the structure matches other code structures of the same type elsewhere in s_sin.c and s_sincos.c. This is the beginning of an attempt to consolidate and reduce code duplication in functions in s_sin.c to make it easier to read and possibly also easier for the compiler to optimize. * sysdeps/ieee754/dbl-64/s_sin.c (reduce_and_compute): Consolidate switch cases 0 and 2.
2016-07-18Fix cos computation for multiple precision fallback (bz #20357)Siddhesh Poyarekar1-2/+2
During the sincos consolidation I made two mistakes, one was a logical error due to which cos(0x1.8475e5afd4481p+0) returned sin(0x1.8475e5afd4481p+0) instead. The second issue was an error in negating inputs for the correct quadrants for sine. I could not find a suitable test case for this despite running a program to search for such an input for a couple of hours. Following patch fixes both issues. Tested on x86_64. Thanks to Matt Clay for identifying the issue. [BZ #20357] * sysdeps/ieee754/dbl-64/s_sin.c (sloww): Fix up condition to call __mpsin/__mpcos and to negate values. * math/auto-libm-test-in: Add test. * math/auto-libm-test-out: Regenerate.
2016-01-04Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2015-12-21Consolidate sincos computation for 2.426265 < |x| < 105414350Siddhesh Poyarekar1-280/+112
Like the previous change, exploit the fact that computation for sin and cos is identical except that it is apart by a quadrant. Also remove csloww, csloww1 and csloww2 since they can easily be expressed in terms of sloww, sloww1 and sloww2.
2015-12-21Consolidate sin and cos code for 105414350 <|x|< 281474976710656Siddhesh Poyarekar1-145/+108
The sin and cos computation for this range of input is identical except for a difference in quadrants by 1. Exploit that fact and the common argument reduction to reduce computations for sincos.
2015-12-21Consolidate range reduction in sincos for x > 281474976710656Siddhesh Poyarekar1-0/+4
Range reduction needs to be done only once for sin and cos, so copy over all of the relevant functions (__sin, __cos, reduce_and_compute) and consolidate common code.
2015-11-17Include s_sin.c in s_sincos.cSiddhesh Poyarekar1-0/+12
Include the __sin and __cos functions as local static copies to allow deper optimization of the functions. This change shows an improvement of about 17% in the min case and 12.5% in the mean case for the sincos microbenchmark on x86_64. * sysdeps/ieee754/dbl-64/s_sin.c (__sin)[IN_SINCOS]: Mark function static and don't set or restore rounding. (__cos)[IN_SINCOS]: Likewise. * sysdeps/ieee754/dbl-64/s_sincos.c: Include s_sin.c. (__sincos): Set and restore rounding mode. Remove check for infinite or NaN input.
2015-11-17Remove redundant else clauses in s_sin.cSiddhesh Poyarekar1-186/+158
Makes the code easier to read due to the reduced nesting. The generated binary is unchanged.
2015-09-23Refactor code forcing underflow exceptions.Joseph Myers1-5/+1
Various floating-point functions have code to force underflow exceptions if a tiny result was computed in a way that might not have resulted in such exceptions even though the result is inexact. This typically uses math_force_eval to ensure that the underflowing expression is evaluated, but sometimes uses volatile. This patch refactors such code to use three new macros math_check_force_underflow, math_check_force_underflow_nonneg and math_check_force_underflow_complex (which in turn use math_force_eval). In the limited number of cases not suited to a simple conversion to these macros, existing uses of volatile are changed to use math_force_eval instead. The converted code does not always execute exactly the same sequence of operations as the original code, but the overall effects should be the same. Tested for x86_64, x86, mips64 and powerpc. * sysdeps/generic/math_private.h (fabs_tg): New macro. (min_of_type): Likewise. (math_check_force_underflow): Likewise. (math_check_force_underflow_nonneg): Likewise. (math_check_force_underflow_complex): Likewise. * math/e_exp2l.c (__ieee754_exp2l): Use math_check_force_underflow_nonneg. * math/k_casinh.c (__kernel_casinh): Likewise. * math/k_casinhf.c (__kernel_casinhf): Likewise. * math/k_casinhl.c (__kernel_casinhl): Likewise. * math/s_catan.c (__catan): Use math_check_force_underflow_complex. * math/s_catanf.c (__catanf): Likewise. * math/s_catanh.c (__catanh): Likewise. * math/s_catanhf.c (__catanhf): Likewise. * math/s_catanhl.c (__catanhl): Likewise. * math/s_catanl.c (__catanl): Likewise. * math/s_ccosh.c (__ccosh): Likewise. * math/s_ccoshf.c (__ccoshf): Likewise. * math/s_ccoshl.c (__ccoshl): Likewise. * math/s_cexp.c (__cexp): Likewise. * math/s_cexpf.c (__cexpf): Likewise. * math/s_cexpl.c (__cexpl): Likewise. * math/s_clog.c (__clog): Use math_check_force_underflow_nonneg. * math/s_clog10.c (__clog10): Likewise. * math/s_clog10f.c (__clog10f): Likewise. * math/s_clog10l.c (__clog10l): Likewise. * math/s_clogf.c (__clogf): Likewise. * math/s_clogl.c (__clogl): Likewise. * math/s_csin.c (__csin): Use math_check_force_underflow_complex. * math/s_csinf.c (__csinf): Likewise. * math/s_csinh.c (__csinh): Likewise. * math/s_csinhf.c (__csinhf): Likewise. * math/s_csinhl.c (__csinhl): Likewise. * math/s_csinl.c (__csinl): Likewise. * math/s_csqrt.c (__csqrt): Use math_check_force_underflow. * math/s_csqrtf.c (__csqrtf): Likewise. * math/s_csqrtl.c (__csqrtl): Likewise. * math/s_ctan.c (__ctan): Use math_check_force_underflow_complex. * math/s_ctanf.c (__ctanf): Likewise. * math/s_ctanh.c (__ctanh): Likewise. * math/s_ctanhf.c (__ctanhf): Likewise. * math/s_ctanhl.c (__ctanhl): Likewise. * math/s_ctanl.c (__ctanl): Likewise. * stdlib/strtod_l.c (round_and_return): Use math_force_eval instead of volatile. * sysdeps/ieee754/dbl-64/e_asin.c (__ieee754_asin): Use math_check_force_underflow. * sysdeps/ieee754/dbl-64/e_atanh.c (__ieee754_atanh): Likewise. * sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Do not use volatile when forcing underflow. * sysdeps/ieee754/dbl-64/e_exp2.c (__ieee754_exp2): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/dbl-64/e_gamma_r.c (__ieee754_gamma_r): Likewise. * sysdeps/ieee754/dbl-64/e_j1.c (__ieee754_j1): Use math_check_force_underflow. * sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_jn): Likewise. * sysdeps/ieee754/dbl-64/e_sinh.c (__ieee754_sinh): Likewise. * sysdeps/ieee754/dbl-64/s_asinh.c (__asinh): Likewise. * sysdeps/ieee754/dbl-64/s_atan.c (atan): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/dbl-64/s_erf.c (__erf): Use math_check_force_underflow. * sysdeps/ieee754/dbl-64/s_expm1.c (__expm1): Likewise. * sysdeps/ieee754/dbl-64/s_fma.c (__fma): Use math_force_eval instead of volatile. * sysdeps/ieee754/dbl-64/s_log1p.c (__log1p): Use math_check_force_underflow. * sysdeps/ieee754/dbl-64/s_sin.c (__sin): Likewise. * sysdeps/ieee754/dbl-64/s_tan.c (tan): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/dbl-64/s_tanh.c (__tanh): Use math_check_force_underflow. * sysdeps/ieee754/flt-32/e_asinf.c (__ieee754_asinf): Likewise. * sysdeps/ieee754/flt-32/e_atanhf.c (__ieee754_atanhf): Likewise. * sysdeps/ieee754/flt-32/e_exp2f.c (__ieee754_exp2f): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/flt-32/e_gammaf_r.c (__ieee754_gammaf_r): Likewise. * sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_j1f): Use math_check_force_underflow. * sysdeps/ieee754/flt-32/e_jnf.c (__ieee754_jnf): Likewise. * sysdeps/ieee754/flt-32/e_sinhf.c (__ieee754_sinhf): Likewise. * sysdeps/ieee754/flt-32/k_sinf.c (__kernel_sinf): Likewise. * sysdeps/ieee754/flt-32/k_tanf.c (__kernel_tanf): Likewise. * sysdeps/ieee754/flt-32/s_asinhf.c (__asinhf): Likewise. * sysdeps/ieee754/flt-32/s_atanf.c (__atanf): Likewise. * sysdeps/ieee754/flt-32/s_erff.c (__erff): Likewise. * sysdeps/ieee754/flt-32/s_expm1f.c (__expm1f): Likewise. * sysdeps/ieee754/flt-32/s_log1pf.c (__log1pf): Likewise. * sysdeps/ieee754/flt-32/s_tanhf.c (__tanhf): Likewise. * sysdeps/ieee754/ldbl-128/e_asinl.c (__ieee754_asinl): Likewise. * sysdeps/ieee754/ldbl-128/e_atanhl.c (__ieee754_atanhl): Likewise. * sysdeps/ieee754/ldbl-128/e_expl.c (__ieee754_expl): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/ldbl-128/e_gammal_r.c (__ieee754_gammal_r): Likewise. * sysdeps/ieee754/ldbl-128/e_j1l.c (__ieee754_j1l): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-128/e_jnl.c (__ieee754_jnl): Likewise. * sysdeps/ieee754/ldbl-128/e_sinhl.c (__ieee754_sinhl): Likewise. * sysdeps/ieee754/ldbl-128/k_sincosl.c (__kernel_sincosl): Likewise. * sysdeps/ieee754/ldbl-128/k_sinl.c (__kernel_sinl): Likewise. * sysdeps/ieee754/ldbl-128/k_tanl.c (__kernel_tanl): Likewise. * sysdeps/ieee754/ldbl-128/s_asinhl.c (__asinhl): Likewise. * sysdeps/ieee754/ldbl-128/s_atanl.c (__atanl): Likewise. * sysdeps/ieee754/ldbl-128/s_erfl.c (__erfl): Likewise. * sysdeps/ieee754/ldbl-128/s_expm1l.c (__expm1l): Likewise. * sysdeps/ieee754/ldbl-128/s_fmal.c (__fmal): Use math_force_eval instead of volatile. * sysdeps/ieee754/ldbl-128/s_log1pl.c (__log1pl): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-128/s_tanhl.c (__tanhl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_asinl.c (__ieee754_asinl): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-128ibm/e_atanhl.c (__ieee754_atanhl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (__ieee754_gammal_r): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/ldbl-128ibm/e_jnl.c (__ieee754_jnl): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-128ibm/e_sinhl.c (__ieee754_sinhl): Likewise. * sysdeps/ieee754/ldbl-128ibm/k_sincosl.c (__kernel_sincosl): Likewise. * sysdeps/ieee754/ldbl-128ibm/k_sinl.c (__kernel_sinl): Likewise. * sysdeps/ieee754/ldbl-128ibm/k_tanl.c (__kernel_tanl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_asinhl.c (__asinhl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_atanl.c (__atanl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_erfl.c (__erfl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_tanhl.c (__tanhl): Likewise. * sysdeps/ieee754/ldbl-96/e_asinl.c (__ieee754_asinl): Likewise. * sysdeps/ieee754/ldbl-96/e_atanhl.c (__ieee754_atanhl): Likewise. * sysdeps/ieee754/ldbl-96/e_gammal_r.c (__ieee754_gammal_r): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/ldbl-96/e_j1l.c (__ieee754_j1l): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-96/e_jnl.c (__ieee754_jnl): Likewise. * sysdeps/ieee754/ldbl-96/e_sinhl.c (__ieee754_sinhl): Likewise. * sysdeps/ieee754/ldbl-96/k_sinl.c (__kernel_sinl): Likewise. * sysdeps/ieee754/ldbl-96/k_tanl.c (__kernel_tanl): Use math_check_force_underflow_nonneg. * sysdeps/ieee754/ldbl-96/s_asinhl.c (__asinhl): Use math_check_force_underflow. * sysdeps/ieee754/ldbl-96/s_erfl.c (__erfl): Likewise. * sysdeps/ieee754/ldbl-96/s_fmal.c (__fmal): Use math_force_eval instead of volatile. * sysdeps/ieee754/ldbl-96/s_tanhl.c (__tanhl): Use math_check_force_underflow.
2015-06-23Fix sin, sincos missing underflows (bug 16526, bug 16538).Joseph Myers1-1/+9
Similar to various other bugs in this area, some sin and sincos implementations do not raise the underflow exception for subnormal arguments, when the result is tiny and inexact. This patch forces the exception in a similar way to previous fixes. Tested for x86_64, x86, mips64 and powerpc. [BZ #16526] [BZ #16538] * sysdeps/ieee754/dbl-64/s_sin.c: Include <float.h>. (__sin): Force underflow exception for arguments with small absolute value. * sysdeps/ieee754/flt-32/k_sinf.c: Include <float.h>. (__kernel_sinf): Force underflow exception for arguments with small absolute value. * sysdeps/ieee754/ldbl-128/k_sincosl.c: Include <float.h>. (__kernel_sincosl): Force underflow exception for arguments with small absolute value. * sysdeps/ieee754/ldbl-128/k_sinl.c: Include <float.h>. (__kernel_sinl): Force underflow exception for arguments with small absolute value. * sysdeps/ieee754/ldbl-128ibm/k_sincosl.c: Include <float.h>. (__kernel_sincosl): Force underflow exception for arguments with small absolute value. * sysdeps/ieee754/ldbl-128ibm/k_sinl.c: Include <float.h>. (__kernel_sinl): Force underflow exception for arguments with small absolute value. * sysdeps/ieee754/ldbl-96/k_sinl.c: Include <float.h>. (__kernel_sinl): Force underflow exception for arguments with small absolute value. * sysdeps/powerpc/fpu/k_sinf.c: Include <float.h>. (__kernel_sinf): Force underflow exception for arguments with small absolute value. * math/auto-libm-test-in: Add more tests of sin and sincos. * math/auto-libm-test-out: Regenerated.
2015-05-15Remove various ABS macros and replace uses with fabs (or in one case abs)Wilco Dijkstra1-39/+40
which is more efficient on all targets.
2015-01-02Update copyright dates with scripts/update-copyrights.Joseph Myers1-1/+1
2014-02-27Fix sign of input to bsloww1 (BZ #16623)Siddhesh Poyarekar1-6/+10
In 84ba214c, I removed some redundant sign computations and in the process, I incorrectly got rid of a temporary variable, thus passing the absolute value of the input to bsloww1. This caused #16623. This fix undoes the incorrect change.
2014-01-01Update copyright notices with scripts/update-copyrightsAllan McRae1-1/+1
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