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Author SHA1 Message Date
Joseph Myers
ad180676b8 Adjust thresholds in Bessel function implementations (bug 14469). 
A recent discussion in bug 14469 notes that a threshold in float
Bessel function implementations, used to determine when to use a
simpler implementation approach, results in substantially inaccurate
results.

As I discussed in
<https://sourceware.org/ml/libc-alpha/2013-03/msg00345.html>, a
heuristic argument suggests 2^(S+P) as the right order of magnitude
for a suitable threshold, where S is the number of significand bits in
the floating-point type and P is the number of significant bits in the
representation of the floating-point type, and the float and ldbl-96
implementations use thresholds that are too small.  Some threshold
does need using, there or elsewhere in the implementation, to avoid
spurious underflow and overflow for large arguments.

This patch sets the thresholds in the affected implementations to more
heuristically justifiable values.  Results will still be inaccurate
close to zeroes of the functions (thus this patch does *not* fix any
of the bugs for Bessel function inaccuracy); fixing that would require
a different implementation approach, likely along the lines described
in <http://www.cl.cam.ac.uk/~jrh13/papers/bessel.ps.gz>.

So the justification for a change such as this would be statistical
rather than based on particular tests that had excessive errors and no
longer do so (no doubt such tests could be found, but would probably
be too fragile to add to the testsuite, as liable to give large errors
again from very small implementation changes or even from compiler
changes).  See
<https://sourceware.org/ml/libc-alpha/2020-02/msg00638.html> for such
statistics of the resulting improvements for float functions.

Tested (glibc testsuite) for x86_64.
 2020-02-14 14:16:25 +00:00
Wilco Dijkstra
220622dde5 Add libm_alias_finite for _finite symbols 
This patch adds a new macro, libm_alias_finite, to define all _finite
symbol.  It sets all _finite symbol as compat symbol based on its first
version (obtained from the definition at built generated first-versions.h).

The <fn>f128_finite symbols were introduced in GLIBC 2.26 and so need
special treatment in code that is shared between long double and float128.
It is done by adding a list, similar to internal symbol redifinition,
on sysdeps/ieee754/float128/float128_private.h.

Alpha also needs some tricky changes to ensure we still emit 2 compat
symbols for sqrt(f).

Passes buildmanyglibc.

Co-authored-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
 2020-01-03 10:02:04 -03:00
Paul Eggert
5a82c74822 Prefer https to http for gnu.org and fsf.org URLs 
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
 2019-09-07 02:43:31 -07:00
Joseph Myers
b4d5b8b021 Do not include math-barriers.h in math_private.h. 
This patch continues the math_private.h cleanup by stopping
math_private.h from including math-barriers.h and making the users of
the barrier macros include the latter header directly.  No attempt is
made to remove any math_private.h includes that are now unused, except
in strtod_l.c where that is done to avoid line number changes in
assertions, so that installed stripped shared libraries can be
compared before and after the patch.  (I think the floating-point
environment support in math_private.h should also move out - some
architectures already have fenv_private.h as an architecture-internal
header included from their math_private.h - and after moving that out
might be a better time to identify 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 the patch.

	* sysdeps/generic/math_private.h: Do not include
	<math-barriers.h>.
	* stdlib/strtod_l.c: Include <math-barriers.h> instead of
	<math_private.h>.
	* math/fromfp.h: Include <math-barriers.h>.
	* math/math-narrow.h: Likewise.
	* math/s_nextafter.c: Likewise.
	* math/s_nexttowardf.c: Likewise.
	* sysdeps/aarch64/fpu/s_llrint.c: Likewise.
	* sysdeps/aarch64/fpu/s_llrintf.c: Likewise.
	* sysdeps/aarch64/fpu/s_lrint.c: Likewise.
	* sysdeps/aarch64/fpu/s_lrintf.c: Likewise.
	* sysdeps/i386/fpu/s_nextafterl.c: Likewise.
	* sysdeps/i386/fpu/s_nexttoward.c: Likewise.
	* sysdeps/i386/fpu/s_nexttowardf.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_atan2.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_atanh.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_exp.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_exp2.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_j0.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_sqrt.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_expm1.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fma.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fmaf.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_log1p.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_nearbyint.c: Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c: Likewise.
	* sysdeps/ieee754/flt-32/e_atanhf.c: Likewise.
	* sysdeps/ieee754/flt-32/e_j0f.c: Likewise.
	* sysdeps/ieee754/flt-32/s_expm1f.c: Likewise.
	* sysdeps/ieee754/flt-32/s_log1pf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_nearbyintf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_nextafterf.c: Likewise.
	* sysdeps/ieee754/k_standardl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_asinl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_expl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_powl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fmal.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_nearbyintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_nextafterl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_nexttoward.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_nexttowardf.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_asinl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fmal.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttoward.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_rintl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_atanhl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_j0l.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fma.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fmal.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_nexttoward.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_nexttowardf.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/s_nexttowardfd.c: Likewise.
	* sysdeps/m68k/m680x0/fpu/s_nextafterl.c: Likewise.
 2018-05-11 15:11:38 +00:00
Wilco Dijkstra
f67a8147b0 Rename all __ieee754_sqrt(f/l) calls to sqrt(f/l) 
Use sqrt(f/l) to enable inlining by GCC - if inlining doesn't happen,
the asm redirect ensures we will still call __ieee754_sqrt(f/l).

	* sysdeps/ieee754/dbl-64/e_acosh.c (__ieee754_acosh): Use sqrt.
	* sysdeps/ieee754/dbl-64/e_gamma_r.c (gamma_positive): Likewise.
	* sysdeps/ieee754/dbl-64/e_hypot.c (__ieee754_hypot): Likewise.
	* sysdeps/ieee754/dbl-64/e_j0.c (__ieee754_j0): Likewise.
	* sysdeps/ieee754/dbl-64/e_j1.c (__ieee754_j1): Likewise.
	* sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_jn): Likewise.
	* sysdeps/ieee754/dbl-64/s_asinh.c (__asinh): Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/e_acosh.c (__ieee754_acosh): Likewise.
	* sysdeps/ieee754/flt-32/e_acosf.c (__ieee754_acosf): Likewise.
	* sysdeps/ieee754/flt-32/e_acoshf.c (__ieee754_acoshf): Likewise.
	* sysdeps/ieee754/flt-32/e_asinf.c (__ieee754_asinf): Likewise.
	* sysdeps/ieee754/flt-32/e_gammaf_r.c (gammaf_positive): Likewise.
	* sysdeps/ieee754/flt-32/e_hypotf.c (__ieee754_hypotf): Likewise.
	* sysdeps/ieee754/flt-32/e_j0f.c (__ieee754_j0f): Likewise.
	* sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_j1f): Likewise.
	* sysdeps/ieee754/flt-32/e_powf.c (__ieee754_powf): Likewise.
	* sysdeps/ieee754/flt-32/s_asinhf.c (__asinhf): Likewise.
	* sysdeps/ieee754/ldbl-128/e_acoshl.c (__ieee754_acoshl): Use sqrtl.
	* sysdeps/ieee754/ldbl-128/e_acosl.c (__ieee754_acosl): Likewise.
	* sysdeps/ieee754/ldbl-128/e_asinl.c (__ieee754_asinl): Likewise.
	* sysdeps/ieee754/ldbl-128/e_gammal_r.c (gammal_positive): Likewise.
	* sysdeps/ieee754/ldbl-128/e_hypotl.c (__ieee754_hypotl): Likewise.
	* sysdeps/ieee754/ldbl-128/e_j0l.c (__ieee754_j0l): Likewise.
	* sysdeps/ieee754/ldbl-128/e_j1l.c (__ieee754_j1l): Likewise.
	* sysdeps/ieee754/ldbl-128/e_jnl.c (__ieee754_jnl): Likewise.
	* sysdeps/ieee754/ldbl-128/e_powl.c (__ieee754_powl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_asinhl.c (__ieee754_asinhl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_acoshl.c (__ieee754_acoshl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_acosl.c (__ieee754_acosl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_asinl.c (__ieee754_asinl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (gammal_positive): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_hypotl.c (__ieee754_hypotl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_j0l.c (__ieee754_j0l): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_j1l.c (__ieee754_j1l): Likewise
	* sysdeps/ieee754/ldbl-128ibm/e_jnl.c (__ieee754_jnl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_powl.c (__ieee754_powl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_asinhl.c (__ieee754_asinhl): Likewise.
	* sysdeps/ieee754/ldbl-96/e_acoshl.c (__ieee754_acoshl): Use sqrtl.
	* sysdeps/ieee754/ldbl-96/e_asinl.c (__ieee754_asinl): Likewise.
	* sysdeps/ieee754/ldbl-96/e_gammal_r.c (gammal_positive): Likewise.
	* sysdeps/ieee754/ldbl-96/e_hypotl.c (__ieee754_hypotl): Likewise.
	* sysdeps/ieee754/ldbl-96/e_j0l.c (__ieee754_j0l): Likewise.
	* sysdeps/ieee754/ldbl-96/e_j1l.c (__ieee754_j1l): Likewise.
	* sysdeps/ieee754/ldbl-96/e_jnl.c (__ieee754_jnl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_asinhl.c (__ieee754_asinhl): Likewise.
	* sysdeps/m68k/m680x0/fpu/e_pow.c (__ieee754_pow): Likewise.
	* sysdeps/powerpc/fpu/e_hypot.c (__ieee754_hypot): Likewise.
	* sysdeps/powerpc/fpu/e_hypotf.c (__ieee754_hypotf): Likewise.
 2018-03-15 19:21:36 +00:00
Joseph Myers
24ab7723b8 Consistently use uintN_t not u_intN_t in libm. 
This patch changes libm code to make consistent use of C99 uintN_t
types instead of sometimes using those and sometimes using the older
nonstandard u_intN_t names.  This makes sense as a cleanup in its own
right, and also facilitates merges to GCC's libquadmath (which gets
the types from stdint.h and so may not have u_intN_t available at
all).

Tested for x86_64, and with build-many-glibcs.py.

	* math/s_nextafter.c (__nextafter): Use uintN_t instead of
	u_intN_t.
	* math/s_nexttowardf.c (__nexttowardf): Likewise.
	* sysdeps/generic/math_private.h (ieee_double_shape_type):
	Likewise.
	(ieee_float_shape_type): Likewise.
	* sysdeps/i386/fpu/s_fpclassifyl.c (__fpclassifyl): Likewise.
	* sysdeps/i386/fpu/s_isnanl.c (__isnanl): Likewise.
	* sysdeps/i386/fpu/s_nextafterl.c (__nextafterl): Likewise.
	* sysdeps/i386/fpu/s_nexttoward.c (__nexttoward): Likewise.
	* sysdeps/i386/fpu/s_nexttowardf.c (__nexttowardf): Likewise.
	* sysdeps/ieee754/dbl-64/e_acosh.c (__ieee754_acosh): Likewise.
	* sysdeps/ieee754/dbl-64/e_cosh.c (__ieee754_cosh): Likewise.
	* sysdeps/ieee754/dbl-64/e_fmod.c (__ieee754_fmod): Likewise.
	* sysdeps/ieee754/dbl-64/e_gamma_r.c (__ieee754_gamma_r):
	Likewise.
	* sysdeps/ieee754/dbl-64/e_hypot.c (__ieee754_hypot): Likewise.
	* sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_jn): Likewise.
	(__ieee754_yn): Likewise.
	* sysdeps/ieee754/dbl-64/e_log10.c (__ieee754_log10): Likewise.
	* sysdeps/ieee754/dbl-64/e_log2.c (__ieee754_log2): Likewise.
	* sysdeps/ieee754/dbl-64/e_rem_pio2.c (__ieee754_rem_pio2):
	Likewise.
	* sysdeps/ieee754/dbl-64/e_sinh.c (__ieee754_sinh): Likewise.
	* sysdeps/ieee754/dbl-64/s_ceil.c (__ceil): Likewise.
	* sysdeps/ieee754/dbl-64/s_copysign.c (__copysign): Likewise.
	* sysdeps/ieee754/dbl-64/s_erf.c (__erf): Likewise.
	(__erfc): Likewise.
	* sysdeps/ieee754/dbl-64/s_expm1.c (__expm1): Likewise.
	* sysdeps/ieee754/dbl-64/s_finite.c (FINITE): Likewise.
	* sysdeps/ieee754/dbl-64/s_floor.c (__floor): Likewise.
	* sysdeps/ieee754/dbl-64/s_fpclassify.c (__fpclassify): Likewise.
	* sysdeps/ieee754/dbl-64/s_isnan.c (__isnan): Likewise.
	* sysdeps/ieee754/dbl-64/s_issignaling.c (__issignaling):
	Likewise.
	* sysdeps/ieee754/dbl-64/s_llrint.c (__llrint): Likewise.
	* sysdeps/ieee754/dbl-64/s_llround.c (__llround): Likewise.
	* sysdeps/ieee754/dbl-64/s_lrint.c (__lrint): Likewise.
	* sysdeps/ieee754/dbl-64/s_lround.c (__lround): Likewise.
	* sysdeps/ieee754/dbl-64/s_modf.c (__modf): Likewise.
	* sysdeps/ieee754/dbl-64/s_nextup.c (__nextup): Likewise.
	* sysdeps/ieee754/dbl-64/s_remquo.c (__remquo): Likewise.
	* sysdeps/ieee754/dbl-64/s_round.c (__round): Likewise.
	* sysdeps/ieee754/dbl-64/s_trunc.c (__trunc): Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_issignaling.c
	(__issignaling): Likewise.
	* sysdeps/ieee754/flt-32/e_atan2f.c (__ieee754_atan2f): Likewise.
	* sysdeps/ieee754/flt-32/e_fmodf.c (__ieee754_fmodf): Likewise.
	* sysdeps/ieee754/flt-32/e_gammaf_r.c (__ieee754_gammaf_r):
	Likewise.
	* sysdeps/ieee754/flt-32/e_jnf.c (__ieee754_ynf): Likewise.
	* sysdeps/ieee754/flt-32/e_log10f.c (__ieee754_log10f): Likewise.
	* sysdeps/ieee754/flt-32/e_powf.c (__ieee754_powf): Likewise.
	* sysdeps/ieee754/flt-32/e_rem_pio2f.c (__ieee754_rem_pio2f):
	Likewise.
	* sysdeps/ieee754/flt-32/e_remainderf.c (__ieee754_remainderf):
	Likewise.
	* sysdeps/ieee754/flt-32/e_sqrtf.c (__ieee754_sqrtf): Likewise.
	* sysdeps/ieee754/flt-32/s_ceilf.c (__ceilf): Likewise.
	* sysdeps/ieee754/flt-32/s_copysignf.c (__copysignf): Likewise.
	* sysdeps/ieee754/flt-32/s_erff.c (__erff): Likewise.
	(__erfcf): Likewise.
	* sysdeps/ieee754/flt-32/s_expm1f.c (__expm1f): Likewise.
	* sysdeps/ieee754/flt-32/s_finitef.c (FINITEF): Likewise.
	* sysdeps/ieee754/flt-32/s_floorf.c (__floorf): Likewise.
	* sysdeps/ieee754/flt-32/s_fpclassifyf.c (__fpclassifyf):
	Likewise.
	* sysdeps/ieee754/flt-32/s_isnanf.c (__isnanf): Likewise.
	* sysdeps/ieee754/flt-32/s_issignalingf.c (__issignalingf):
	Likewise.
	* sysdeps/ieee754/flt-32/s_llrintf.c (__llrintf): Likewise.
	* sysdeps/ieee754/flt-32/s_llroundf.c (__llroundf): Likewise.
	* sysdeps/ieee754/flt-32/s_lrintf.c (__lrintf): Likewise.
	* sysdeps/ieee754/flt-32/s_lroundf.c (__lroundf): Likewise.
	* sysdeps/ieee754/flt-32/s_modff.c (__modff): Likewise.
	* sysdeps/ieee754/flt-32/s_remquof.c (__remquof): Likewise.
	* sysdeps/ieee754/flt-32/s_roundf.c (__roundf): Likewise.
	* sysdeps/ieee754/ldbl-128/e_acoshl.c (__ieee754_acoshl):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_atan2l.c (__ieee754_atan2l):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_atanhl.c (__ieee754_atanhl):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_fmodl.c (__ieee754_fmodl): Likewise.
	* sysdeps/ieee754/ldbl-128/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_hypotl.c (__ieee754_hypotl):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_jnl.c (__ieee754_jnl): Likewise.
	(__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldbl-128/e_powl.c (__ieee754_powl): Likewise.
	* sysdeps/ieee754/ldbl-128/e_rem_pio2l.c (__ieee754_rem_pio2l):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_remainderl.c (__ieee754_remainderl):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_sinhl.c (__ieee754_sinhl): Likewise.
	* sysdeps/ieee754/ldbl-128/k_cosl.c (__kernel_cosl): 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/s_ceill.c (__ceill): Likewise.
	* sysdeps/ieee754/ldbl-128/s_copysignl.c (__copysignl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_erfl.c (__erfcl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_fabsl.c (__fabsl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_finitel.c (__finitel): Likewise.
	* sysdeps/ieee754/ldbl-128/s_floorl.c (__floorl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_fpclassifyl.c (__fpclassifyl):
	Likewise.
	* sysdeps/ieee754/ldbl-128/s_frexpl.c (__frexpl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_isnanl.c (__isnanl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_issignalingl.c (__issignalingl):
	Likewise.
	* sysdeps/ieee754/ldbl-128/s_llrintl.c (__llrintl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_llroundl.c (__llroundl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_lrintl.c (__lrintl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_lroundl.c (__lroundl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_modfl.c (__modfl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_nearbyintl.c (__nearbyintl):
	Likewise.
	* sysdeps/ieee754/ldbl-128/s_nextafterl.c (__nextafterl):
	Likewise.
	* sysdeps/ieee754/ldbl-128/s_nexttoward.c (__nexttoward):
	Likewise.
	* sysdeps/ieee754/ldbl-128/s_nexttowardf.c (__nexttowardf):
	Likewise.
	* sysdeps/ieee754/ldbl-128/s_nextupl.c (__nextupl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_remquol.c (__remquol): Likewise.
	* sysdeps/ieee754/ldbl-128/s_rintl.c (__rintl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_roundl.c (__roundl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_tanhl.c (__tanhl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_truncl.c (__truncl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_fmodl.c (__ieee754_fmodl):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_powl.c (__ieee754_powl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c (__ieee754_rem_pio2l):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_remainderl.c
	(__ieee754_remainderl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/k_cosl.c (__kernel_cosl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/k_sinl.c (__kernel_sinl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fabsl.c (__fabsl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fpclassifyl.c (___fpclassifyl):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_modfl.c (__modfl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c (__nexttowardf):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_remquol.c (__remquol): Likewise.
	* sysdeps/ieee754/ldbl-96/e_acoshl.c (__ieee754_acoshl): 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_coshl.c (__ieee754_coshl): Likewise.
	* sysdeps/ieee754/ldbl-96/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-96/e_hypotl.c (__ieee754_hypotl): Likewise.
	* sysdeps/ieee754/ldbl-96/e_j0l.c (__ieee754_j0l): Likewise.
	(__ieee754_y0l): Likewise.
	(pzero): Likewise.
	(qzero): Likewise.
	* sysdeps/ieee754/ldbl-96/e_j1l.c (__ieee754_j1l): Likewise.
	(__ieee754_y1l): Likewise.
	(pone): Likewise.
	(qone): Likewise.
	* sysdeps/ieee754/ldbl-96/e_jnl.c (__ieee754_jnl): Likewise.
	(__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldbl-96/e_lgammal_r.c (sin_pi): Likewise.
	(__ieee754_lgammal_r): Likewise.
	* sysdeps/ieee754/ldbl-96/e_rem_pio2l.c (__ieee754_rem_pio2l):
	Likewise.
	* sysdeps/ieee754/ldbl-96/e_sinhl.c (__ieee754_sinhl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_copysignl.c (__copysignl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_erfl.c (__erfl): Likewise.
	(__erfcl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_frexpl.c (__frexpl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_issignalingl.c (__issignalingl):
	Likewise.
	* sysdeps/ieee754/ldbl-96/s_llrintl.c (__llrintl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_llroundl.c (__llroundl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_lrintl.c (__lrintl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_lroundl.c (__lroundl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_modfl.c (__modfl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_nexttoward.c (__nexttoward): Likewise.
	* sysdeps/ieee754/ldbl-96/s_nexttowardf.c (__nexttowardf):
	Likewise.
	* sysdeps/ieee754/ldbl-96/s_nextupl.c (__nextupl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_remquol.c (__remquol): Likewise.
	* sysdeps/ieee754/ldbl-96/s_roundl.c (__roundl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_tanhl.c (__tanhl): Likewise.
	* sysdeps/ieee754/ldbl-opt/s_nexttowardfd.c (__nldbl_nexttowardf):
	Likewise.
	* sysdeps/m68k/m680x0/fpu/e_pow.c (s(__ieee754_pow)): Likewise.
	* sysdeps/m68k/m680x0/fpu/s_fpclassifyl.c (__fpclassifyl):
	Likewise.
	* sysdeps/m68k/m680x0/fpu/s_llrint.c (__llrint): Likewise.
	* sysdeps/m68k/m680x0/fpu/s_llrintf.c (__llrintf): Likewise.
	* sysdeps/m68k/m680x0/fpu/s_llrintl.c (__llrintl): Likewise.
	* sysdeps/m68k/m680x0/fpu/s_nextafterl.c (__nextafterl): Likewise.
	* sysdeps/x86/fpu/powl_helper.c (__powl_helper): Likewise.
 2017-08-03 19:55:04 +00:00
Joseph Myers
09220e6634 Avoid uninitialized warnings in Bessel functions. 
math/Makefile currently has:

  # The fdlibm code generates a lot of these warnings but is otherwise clean.
  override CFLAGS += -Wno-uninitialized

This is of course undesirable; warnings should be disabled as narrowly
as possible.  To remove this override, we need to fix files that
generate such warnings, or put warning-disabling pragmas in them.
This patch does so for Bessel function implementations, one of the
cases that have the warnings if the override is removed.  The warnings
arise because functions set pointer variables p and q only for certain
values of the function argument, then use them unconditionally.  As
the static functions in question only get called for arguments that
satisfy the last condition in the if/else chain, the natural fix is to
change the last "else if" to just "else", which this patch does.  (The
ldbl-128 / ldbl-128ibm implementation of these functions is
substantially different and looks like it already does use "else" in
the last case in the nearest corresponding code.)

Tested for x86_64 and x86.

	* sysdeps/ieee754/dbl-64/e_j0.c (pzero): Change last case for
	setting p and q from "else if" to "else".
	(qzero): Likewise.
	* sysdeps/ieee754/dbl-64/e_j1.c (pone): Likewise.
	(qone): Likewise.
	* sysdeps/ieee754/flt-32/e_j0f.c (pzerof): Likewise.
	(qzerof): Likewise.
	* sysdeps/ieee754/flt-32/e_j1f.c (ponef): Likewise.
	(qonef): Likewise.
	* sysdeps/ieee754/ldbl-96/e_j0l.c (pzero): Likewise.
	(qzero): Likewise.
	* sysdeps/ieee754/ldbl-96/e_j1l.c (pone): Likewise.
	(qone): Likewise.
 2015-02-26 21:49:19 +00:00
Ondřej Bílka
a1ffb40e32 Use glibc_likely instead __builtin_expect. 2014-02-10 15:07:12 +01:00
Richard Henderson
1ed0291c31 Use <> for math.h and math_private.h everywhere. 
Entire tree edited via find | grep | sed.
 2012-03-09 16:09:10 -08:00
Paul Eggert
59ba27a63a Replace FSF snail mail address with URLs. 2012-02-09 23:18:22 +00:00
Ulrich Drepper
8ad89ef88d Avoid warnings about unused variable in 96-bit j0l and j1l 2011-11-12 02:20:29 -05:00
Ulrich Drepper
d7826aa149 Use math_force_eval in more places 2011-10-25 10:52:45 -04:00
Ulrich Drepper
0ac5ae2335 Optimize libm 
libm is now somewhat integrated with gcc's -ffinite-math-only option
and lots of the wrapper functions have been optimized.
 2011-10-12 11:27:51 -04:00
Andreas Jaeger
1f510b3faa Update. 
* sysdeps/ieee754/dbl-64/e_j0.c (__ieee754_y0): Raise only
	overflow for 0 as argument. Raise Invalid exception for negative
	args.
	* sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_yn): Likewise.
	* sysdeps/ieee754/dbl-64/e_j1.c (__ieee754_y0): Likewise.
	* sysdeps/ieee754/ldb-128/e_jnl.c (__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldb-128/e_j0l.c (__ieee754_y0l): Likewise.
	* sysdeps/ieee754/ldb-128/e_j1l.c (__ieee754_y1l): Likewise.
	* sysdeps/ieee754/ldb-96/e_jnl.c (__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldb-96/e_j0l.c (__ieee754_y0l): Likewise.
	* sysdeps/ieee754/ldb-96/e_j1l.c (__ieee754_y1l): Likewise.
	* sysdeps/ieee754/flt-32/e_jnf.c (__ieee754_ynf): Likewise.
	* sysdeps/ieee754/flt-32/e_j0f.c (__ieee754_y0f): Likewise.
	* sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_y1f): Likewise.

	* math/libm-test.inc (yn_test): Expect invalid exception for
	negative arguments.
	(y0_test): Likewise.
	(y1_test): Likewise.
 2003-12-28 20:51:20 +00:00
Roland McGrath
9cd2726c93 * sysdeps/ieee754/flt-32/e_asinf.c: Modified copying permission 
wording at request of copyright holder Stephen Moshier.
	* sysdeps/ieee754/ldbl-128/e_acosl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_asinl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_coshl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_jnl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_powl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_sinhl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/k_tanl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_erfl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_asinl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_j0l.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_j1l.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_jnl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_lgammal_r.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_erfl.c: Likewise.
 2002-08-28 02:30:36 +00:00
Roland McGrath
cc7375ce02 2002-08-26 Brian Youmans <3diff@gnu.org> 
* crypt/crypt.c: Changed copying permission notice to Lesser GPL
        from Library GPL.
        * crypt/crypt_util.c: Likewise.
        * crypt/ufc.c: Likewise.
        * elf/dl-conflict.c: Likewise.
        * elf/dl-iteratephdr.c: Likewise.
        * iconv/iconvconfig.h: Likewise.
        * linuxthreads/Examples/ex10.c: Likewise.
        * linuxthreads/Examples/ex11.c: Likewise.
        * linuxthreads/Examples/ex13.c: Likewise.
        * linuxthreads/Examples/ex8.c: Likewise.
        * linuxthreads/Examples/ex9.c: Likewise.
        * linuxthreads/barrier.c: Likewise.
        * linuxthreads/events.c: Likewise.
        * linuxthreads/lockfile.c: Likewise.
        * linuxthreads/no-tsd.c: Likewise.
        * linuxthreads/pt-machine.c: Likewise.
        * linuxthreads/ptclock_gettime.c: Likewise.
        * linuxthreads/ptclock_settime.c: Likewise.
        * linuxthreads/rwlock.c: Likewise.
        * linuxthreads/sysdeps/alpha/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/alpha/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/arm/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/arm/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/cris/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/cris/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/hppa/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/hppa/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/i386/i686/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/i386/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/i386/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/i386/useldt.h: Likewise.
        * linuxthreads/sysdeps/ia64/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/ia64/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/m68k/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/m68k/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/mips/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/mips/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/powerpc/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/powerpc/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/pthread/bits/initspin.h: Likewise.
        * linuxthreads/sysdeps/pthread/bits/libc-lock.h: Likewise.
        * linuxthreads/sysdeps/pthread/bits/libc-tsd.h: Likewise.
        * linuxthreads/sysdeps/pthread/getcpuclockid.c: Likewise.
        * linuxthreads/sysdeps/pthread/posix-timer.h: Likewise.
        * linuxthreads/sysdeps/pthread/timer_create.c: Likewise.
        * linuxthreads/sysdeps/pthread/timer_delete.c: Likewise.
        * linuxthreads/sysdeps/pthread/timer_getoverr.c: Likewise.
        * linuxthreads/sysdeps/pthread/timer_gettime.c: Likewise.
        * linuxthreads/sysdeps/pthread/timer_routines.c: Likewise.
        * linuxthreads/sysdeps/pthread/timer_settime.c: Likewise.
        * linuxthreads/sysdeps/pthread/tst-timer.c: Likewise.
        * linuxthreads/sysdeps/s390/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/s390/s390-32/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/s390/s390-64/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/sh/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/sh/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/sparc/sparc32/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/sparc/sparc32/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/sparc/sparc32/sparcv9/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/sparc/sparc64/pspinlock.c: Likewise.
        * linuxthreads/sysdeps/sparc/sparc64/pt-machine.h: Likewise.
        * linuxthreads/sysdeps/unix/sysv/linux/bits/local_lim.h: Likewise.
        * linuxthreads/sysdeps/unix/sysv/linux/bits/posix_opt.h: Likewise.
        * linuxthreads/sysdeps/unix/sysv/linux/bits/sigthread.h: Likewise.
        * linuxthreads/sysdeps/unix/sysv/linux/hppa/bits/initspin.h: Likewise.
        * linuxthreads/sysdeps/unix/sysv/linux/i386/bits/posix_opt.h: Likewise.
        * linuxthreads/tststack.c: Likewise.
        * linuxthreads/unload.c: Likewise.
        * linuxthreads/weaks.c: Likewise.
        * linuxthreads/wrapsyscall.c: Likewise.
        * malloc/arena.c: Likewise.
        * malloc/hooks.c: Likewise.
        * malloc/malloc.c: Likewise.
        * posix/glob/Makefile.ami: Likewise.
        * posix/glob/Makefile.in: Likewise.
        * stdlib/gmp-impl.h: Likewise.
        * stdlib/gmp.h: Likewise.
        * sysdeps/generic/dl-iteratephdr-static.c: Likewise.
        * sysdeps/generic/strnlen.c: Likewise.
        * sysdeps/mach/hurd/powerpc/bits/sigcontext.h: Likewise.
        * sysdeps/mach/hurd/recvmsg.c: Likewise.
        * sysdeps/mach/hurd/sendmsg.c: Likewise.
        * sysdeps/mach/hurd/spawni.c: Likewise.
        * sysdeps/mach/powerpc/machine-sp.h: Likewise.
        * sysdeps/mach/powerpc/sysdep.h: Likewise.
        * sysdeps/mach/powerpc/thread_state.h: Likewise.
        * sysdeps/unix/bsd/bsd4.4/bits/socket.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/dl-iteratephdr-static.c: Likewise.
        * sysdeps/x86_64/gmp-mparam.h: Likewise.
 2002-08-26 22:40:48 +00:00
Andreas Jaeger
c0ad824e40 Update. 
2002-08-23  Andreas Jaeger  <aj@suse.de>

	* locale/loadarchive.c: Include <stdlib.h> for prototypes of
	alloca, free, qsort.

	* dlfcn/bug-dlsym1-lib1.c (foo): Add prototype to avoid warning.

	* sysdeps/ieee754/flt-32/e_jnf.c: Remove unused variable.
	* sysdeps/ieee754/ldbl-96/e_j0l.c: Likewise.

	* sysdeps/generic/fgetxattr.c: New file.
	* sysdeps/generic/flistxattr.c: New file.
	* sysdeps/generic/fremovexattr.c: New file.
	* sysdeps/generic/fsetxattr.c: New file.
	* sysdeps/generic/getxattr.c: New file.
	* sysdeps/generic/listxattr.c: New file.
	* sysdeps/generic/lgetxattr.c: New file.
	* sysdeps/generic/llistxattr.c: New file.
	* sysdeps/generic/lremovexattr.c: New file.
	* sysdeps/generic/lsetxattr.c: New file.
	* sysdeps/generic/removexattr.c: New file.
	* sysdeps/generic/setxattr.c: New file.

	* misc/sys/xattr.h: New file, contributed by Christoph Hellwig
	<hch@lst.de>.

	* misc/Makefile (headers): Add sys/xattr.h.
	(routines): Add *xattr calls.

	* misc/Versions: Add *xattr calls with version 2.3.

	* sysdeps/unix/sysv/linux/m68k/Versions: Remove *xattr syscalls.
	* sysdeps/unix/sysv/linux/s390/s390-32/Versions: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/Versions: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/Versions: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/Versions: Likewise.
	* sysdeps/unix/sysv/linux/ia64/Versions: Likewise.
	* sysdeps/unix/sysv/linux/alpha/Versions: Likewise.
	* sysdeps/unix/sysv/linux/arm/Versions: Likewise.

	* sysdeps/powerpc/elf/libc-start.c
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c
 2002-08-23 09:29:27 +00:00
Ulrich Drepper
5d2a88a70e Little optimization, use sincos. 2001-02-13 01:23:48 +00:00
Ulrich Drepper
8de5da94ce Update. 
2001-02-12  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/dbl-64/e_j0.c: Little optimization, use sincos.
	* sysdeps/flt-32/e_j0f.c: Likewise.
	* sysdeps/ldbl-96/e_j0l.c: Likewise.
 2001-02-13 01:15:12 +00:00
Ulrich Drepper
0fc95b8219 Update. 
2001-02-12  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/ieee754/ldbl-96/e_j0l.c: New file.
	Contributed by Stephen L. Moshier <moshier@na-net.ornl.gov>.

2001-02-11  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/generic/strtoll.c (__strtoq_internal): Ressurect alias
	which was exported from libc.
	* sysdeps/generic/strtoull.c (__strtouq_internal): Likewise.
 2001-02-12 09:15:54 +00:00