glibc/sysdeps/ia64/fpu
Joseph Myers 034e738021 Add float128 support for ia64.
This patch enables float128 support for ia64, so that all the
configurations where GCC supports _Float128 / __float128 as an
ABI-distinct type now have glibc support as well.  bits/floatn.h
declares the support to be available for GCC 4.4 and later, which is
when the libgcc support was added.  The removal of
sysdeps/ia64/fpu/k_rem_pio2.c is because the generic k_rem_pio2.c
defines a function required by the float128 code.

Tested (compilation only) with build-many-glibcs.py for ia64 (GCC 6
and GCC 7).

Given how long it is since libm-test-ulps has been updated for ia64, I
think truncating the file and regenerating it from scratch would be a
good idea when doing a regeneration to add float128 ulps.  I expect
various ia64 libm issues (at least some already filed in Bugzilla) to
result in test failures even after ulps regeneration, but hopefully
the float128 code will pass tests as it's the same as used on other
architectures.

	* sysdeps/ia64/Implies: Add ieee754/float128.
	* sysdeps/ia64/bits/floatn.h: New file.
	* sysdeps/ia64/float128-abi.h: Likewise.
	* manual/math.texi (Mathematics): Document support for _Float128
	on ia64.
	* sysdeps/ia64/Makefile [$(subdir) = math] (CPPFLAGS): Append to
	Makefile variable.
	* sysdeps/ia64/fpu/e_sqrtf128.c: New file.
	* sysdeps/ia64/fpu/k_rem_pio2.c: Remove file.
	* sysdeps/ia64/fpu/sfp-machine.h: New file.  Based on libgcc.
	* sysdeps/ia64/math-tests.h: New file.
	* math/libm-test-support.h (XFAIL_FLOAT128_PAYLOAD): Also define
	based on TEST_COND_binary128 for [__ia64__].
	* sysdeps/unix/sysv/linux/ia64/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise,
2017-06-26 22:50:45 +00:00
..
bits Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
branred.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
doasin.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
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e_fmod.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
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e_rem_pio2.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
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e_rem_pio2l.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
e_remainder.S Make drem an alias of remainder (bug 16171). 2015-10-29 22:29:21 +00:00
e_remainderf.S Make drem an alias of remainder (bug 16171). 2015-10-29 22:29:21 +00:00
e_remainderl.S Make drem an alias of remainder (bug 16171). 2015-10-29 22:29:21 +00:00
e_scalb.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
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e_sqrt.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
e_sqrtf128.c Add float128 support for ia64. 2017-06-26 22:50:45 +00:00
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fclrexcpt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fedisblxcpt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
feenablxcpt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fegetenv.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fegetexcept.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fegetmode.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fegetround.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
feholdexcpt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fesetenv.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fesetexcept.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fesetmode.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fesetround.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
feupdateenv.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fgetexcptflg.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fraiseexcpt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fsetexcptflg.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ftestexcept.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
gen_import_file_list ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
get-rounding-mode.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
halfulp.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
import_check ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
import_diffs ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
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k_rem_pio2f.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
lgamma-compat.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
libc_libm_error.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
libm_cpu_defs.h ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
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libm-symbols.h Suppress internal declarations for most of the testsuite. 2017-05-11 19:27:59 -04:00
libm-test-ulps Remove very old libm-test-ulps entries. 2017-01-20 23:58:49 +00:00
libm-test-ulps-name Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00
Makefile ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
math_ldbl.h Allow direct use of math_ldbl.h in testsuite. 2017-02-25 10:40:48 -05:00
mpa.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
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printf_fphex.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
README ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
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s_copysign.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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s_finite.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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s_fpclassify.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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s_isinf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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s_isnan.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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s_nearbyintl.S Fix nearbyintl linkage for ia64 (bug 19219) 2015-11-10 10:56:24 -02:00
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s_nexttoward.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_nexttowardf.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_nexttowardl.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_rint.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_rintf.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_rintl.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_round.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_roundf.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_roundl.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_scalblnf.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_scalbn.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_scalbnf.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_scalbnl.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_signbit.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_signbitf.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_signbitl.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_significand.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_significandf.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_significandl.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_sin.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_sincos.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_sincosf.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_sincosl.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_sinf.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_sinl.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_tan.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_tanf.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_tanh.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_tanhf.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_tanhl.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_tanl.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_trunc.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_truncf.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
s_truncl.S ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
sfp-machine.h Add float128 support for ia64. 2017-06-26 22:50:45 +00:00
sincos32.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
slowexp.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
slowpow.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
t_exp.c ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
Versions ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
w_acos_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_acosf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_acosh_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_acoshf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_acoshl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_acosl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_asin_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_asinf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_asinl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_atan2_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_atan2f_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_atan2l_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_atanh_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_atanhf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_atanhl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_cosh_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_coshf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_coshl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_exp2_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_exp2f_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_exp2l_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_exp10_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_exp10f_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_exp10l_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_exp_compat.c Move w_exp to libm-compat-call-auto 2017-02-08 17:44:20 -02:00
w_expf_compat.c Move w_exp to libm-compat-call-auto 2017-02-08 17:44:20 -02:00
w_expl_compat.c Move w_exp to libm-compat-call-auto 2017-02-08 17:44:20 -02:00
w_fmod_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_fmodf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_fmodl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_hypot_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_hypotf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_hypotl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_lgamma_main.c ia64: fpu: fix gamma definition handling [BZ #15421] 2016-01-01 22:17:07 -05:00
w_lgamma_r_compat.c Move w_lgamma_r to libm-compat-calls-auto 2017-02-08 17:36:09 -02:00
w_lgammaf_main.c ia64: fpu: fix gamma definition handling [BZ #15421] 2016-01-01 22:17:07 -05:00
w_lgammaf_r_compat.c Move w_lgamma_r to libm-compat-calls-auto 2017-02-08 17:36:09 -02:00
w_lgammal_main.c ia64: fpu: fix gamma definition handling [BZ #15421] 2016-01-01 22:17:07 -05:00
w_lgammal_r_compat.c Move w_lgamma_r to libm-compat-calls-auto 2017-02-08 17:36:09 -02:00
w_log1p.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
w_log1pf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
w_log1pl.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
w_log2_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_log2f_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_log2l_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_log10_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_log10f_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_log10l_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_log_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_logf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_logl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_pow_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_powf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_powl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_remainder_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_remainderf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_remainderl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_scalb_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_scalbf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_scalbl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_scalblnf.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
w_sinh_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_sinhf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_sinhl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_sqrt_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_sqrtf_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_sqrtl_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_tgamma_compat.S Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_tgammaf_compat.S Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00
w_tgammal_compat.S Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00

  ----------------------------------------------------------
  Notes on how to update libm based on Intel's libm releases
  ----------------------------------------------------------

This source code in this directory is currently based on Intel libm
v2.1 as available from:

  http://www.intel.com/software/products/opensource/libraries/num.htm

To ease importing, fix some bugs, and simplify integration into libc,
it is also necessary to apply the patch at:

  ftp://ftp.hpl.hp.com/pub/linux-ia64/intel-libm-041228.diff.gz

The expectation is that Intel will integrate most if not all of these
changes into future releases of libm, so this patching step can
hopefully be omitted in the future.

Once the patched libm sources are extracted in a directory $LIBM, they
can be imported into the libc source tree at $LIBC with the following
step:

	$ cd $LIBC/src/sysdep/ia64/fpu
	$ ./import_intel_libm $LIBM

This should produce a number of "Importing..." messages, without
showing any errors.

At this point, you should be able to build glibc in the usual fashion.
We assume you do this in directory $OBJ.  Once the build has
completed, run "make check" to verify that all (math) checks succeed.
If these checks succeed, you should also run the following commands to
verify that the new libm doesn't pollute the name-space and has proper
size-info for the data objects:

	$ cd $LIBC/src/sysdep/ia64/fpu
	$ import_check $OBJ/math/

There should be no (unexpected) errors reported by this script.

As an optional step, you may also want to confirm that the new libm
exports the exact same global symbols as the old one.

If you want to see the changes introduced by the "import_intel_libm"
script, you can run the commands:

	$ cd $LIBC/src/sysdep/ia64/fpu
	$ import_diffs

That's it.