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glibc/sysdeps/i386/fpu
History
Joseph Myers c86ed71d63 Add float128 support for x86_64, x86. 
This patch enables float128 support for x86_64 and x86.  All GCC
versions that can build glibc provide the required support, but since
GCC 6 and before don't provide __builtin_nanq / __builtin_nansq, sNaN
tests and some tests of NaN payloads need to be disabled with such
compilers (this does not affect the generated glibc binaries at all,
just the tests).  bits/floatn.h declares float128 support to be
available for GCC versions that provide the required libgcc support
(4.3 for x86_64, 4.4 for i386 GNU/Linux, 4.5 for i386 GNU/Hurd);
compilation-only support was present some time before then, but not
really useful without the libgcc functions.

fenv_private.h needed updating to avoid trying to put _Float128 values
in registers.  I make no assertion of optimality of the
math_opt_barrier / math_force_eval definitions for this case; they are
simply intended to be sufficient to work correctly.

Tested for x86_64 and x86, with GCC 7 and GCC 6.  (Testing for x32 was
compilation tests only with build-many-glibcs.py to verify the ABI
baseline updates.  I have not done any testing for Hurd, although the
float128 support is enabled there as for GNU/Linux.)

	* sysdeps/i386/Implies: Add ieee754/float128.
	* sysdeps/x86_64/Implies: Likewise.
	* sysdeps/x86/bits/floatn.h: New file.
	* sysdeps/x86/float128-abi.h: Likewise.
	* manual/math.texi (Mathematics): Document support for _Float128
	on x86_64 and x86.
	* sysdeps/i386/fpu/fenv_private.h: Include <bits/floatn.h>.
	(math_opt_barrier): Do not put _Float128 values in floating-point
	registers.
	(math_force_eval): Likewise.
	[__x86_64__] (SET_RESTORE_ROUNDF128): New macro.
	* sysdeps/x86/fpu/Makefile [$(subdir) = math] (CPPFLAGS): Append
	to Makefile variable.
	* sysdeps/x86/fpu/e_sqrtf128.c: New file.
	* sysdeps/x86/fpu/sfp-machine.h: Likewise.  Based on libgcc.
	* sysdeps/x86/math-tests.h: New file.
	* math/libm-test-support.h (XFAIL_FLOAT128_PAYLOAD): New macro.
	* math/libm-test-getpayload.inc (getpayload_test_data): Use
	XFAIL_FLOAT128_PAYLOAD.
	* math/libm-test-setpayload.inc (setpayload_test_data): Likewise.
	* math/libm-test-totalorder.inc (totalorder_test_data): Likewise.
	* math/libm-test-totalordermag.inc (totalordermag_test_data):
	Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2017-06-26 22:02:24 +00:00
..
doasin.c Update. 2001-03-12 00:04:52 +00:00
e_acos.S Fix x86 acos near 1 (bug 13942). 2012-04-30 18:56:39 +00:00
e_acosf.S Fix acos (-1) in round-downwards mode on x86 (bug 14034). 2012-04-30 09:38:06 +00:00
e_acosh.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_acoshf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_acoshl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_acosl.c Fix x86 acos near 1 (bug 13942). 2012-04-30 18:56:39 +00:00
e_asin.S Refactor i386 libm code forcing underflow exceptions. 2015-09-24 21:41:00 +00:00
e_asinf.S Refactor i386 libm code forcing underflow exceptions. 2015-09-24 21:41:00 +00:00
e_atan2.S Refactor i386 libm code forcing underflow exceptions. 2015-09-24 21:41:00 +00:00
e_atan2f.S Refactor i386 libm code forcing underflow exceptions. 2015-09-24 21:41:00 +00:00
e_atan2l.c Optimize libm 2011-10-12 11:27:51 -04:00
e_atanh.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_atanhf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_atanhl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_exp2.S Avoid excess range in results from i386 exp, hypot, pow functions (bug 18980). 2015-09-18 21:53:22 +00:00
e_exp2f.S Avoid excess range in results from i386 exp, hypot, pow functions (bug 18980). 2015-09-18 21:53:22 +00:00
e_exp2l.S Refactor i386 libm code forcing underflow exceptions. 2015-09-24 21:41:00 +00:00
e_exp10.S Avoid excess range in results from i386 exp, hypot, pow functions (bug 18980). 2015-09-18 21:53:22 +00:00
e_exp10f.S Avoid excess range in results from i386 exp, hypot, pow functions (bug 18980). 2015-09-18 21:53:22 +00:00
e_exp10l.S Fix exp10 inaccuracy and exceptions (bugs 13884, 13914). 2012-05-06 18:23:44 +00:00
e_exp.S Avoid excess range in results from i386 exp, hypot, pow functions (bug 18980). 2015-09-18 21:53:22 +00:00
e_expf.S Avoid excess range in results from i386 exp, hypot, pow functions (bug 18980). 2015-09-18 21:53:22 +00:00
e_expl.S Fix i386/x86_64 expl, exp10l, expm1l for sNaN input (bug 20226). 2016-06-08 21:55:06 +00:00
e_fmod.S Optimize libm 2011-10-12 11:27:51 -04:00
e_fmodf.S Optimize libm 2011-10-12 11:27:51 -04:00
e_fmodl.c Optimize libm 2011-10-12 11:27:51 -04:00
e_hypot.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_hypotf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_ilogb.S Remove useless __ilogb*_finite aliases 2012-04-18 00:40:13 +02:00
e_ilogbf.S Remove useless __ilogb*_finite aliases 2012-04-18 00:40:13 +02:00
e_ilogbl.S Remove useless __ilogb*_finite aliases 2012-04-18 00:40:13 +02:00
e_log2.S Fix log2 (1) in round-downward mode (bug 17042). 2014-06-10 12:07:15 +00:00
e_log2f.S Fix log2 (1) in round-downward mode (bug 17042). 2014-06-10 12:07:15 +00:00
e_log2l.S Fix i386/x86_64 log2l (sNaN) (bug 20235). 2016-06-09 18:04:30 +00:00
e_log10.S Fix log10 (1) in round-downward mode (bug 16977). 2014-05-23 12:07:50 +00:00
e_log10f.S Fix log10 (1) in round-downward mode (bug 16977). 2014-05-23 12:07:50 +00:00
e_log10l.S Fix i386/x86_64 log10l (sNaN) (bug 20228). 2016-06-08 22:59:18 +00:00
e_log.S Fix i386/x86_64 log* (1) zero sign for -ffinite-math-only (bug 19213). 2015-11-05 21:56:31 +00:00
e_logf.S Fix i386/x86_64 log* (1) zero sign for -ffinite-math-only (bug 19213). 2015-11-05 21:56:31 +00:00
e_logl.S Fix i386/x86_64 logl (sNaN) (bug 20227). 2016-06-08 22:24:06 +00:00
e_pow.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_powf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_powl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
e_rem_pio2.c
e_remainder.S Optimize libm 2011-10-12 11:27:51 -04:00
e_remainderf.S Optimize libm 2011-10-12 11:27:51 -04:00
e_remainderl.S Optimize libm 2011-10-12 11:27:51 -04:00
e_scalb.S Avoid excess range in results from i386 scalb functions (bug 18981). 2015-09-18 20:34:59 +00:00
e_scalbf.S Avoid excess range in results from i386 scalb functions (bug 18981). 2015-09-18 20:34:59 +00:00
e_scalbl.S Fix i386/x86_64 scalbl with sNaN input (bug 20296). 2016-06-23 22:17:41 +00:00
e_sqrt.S Fix x86 sqrt rounding (bug 14032). 2013-11-29 16:31:16 +00:00
e_sqrtf.S Optimize libm 2011-10-12 11:27:51 -04:00
e_sqrtl.c Optimize libm 2011-10-12 11:27:51 -04:00
fclrexcpt.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
fedisblxcpt.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
feenablxcpt.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
fegetenv.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
fegetexcept.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fegetmode.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
fegetround.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
feholdexcpt.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
fenv_private.h Add float128 support for x86_64, x86. 2017-06-26 22:02:24 +00:00
fesetenv.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
fesetexcept.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fesetmode.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
fesetround.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
feupdateenv.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
fgetexcptflg.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
fraiseexcpt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fsetexcptflg.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
ftestexcept.c Check if SSE is available with HAS_CPU_FEATURE 2017-04-07 07:44:59 -07:00
halfulp.c Update. 2001-03-12 00:04:52 +00:00
i386-math-asm.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Implies Use x86_64 fpu/bits/fenv.h for i386 and x86_64 2012-06-06 10:13:19 -07:00
libm-test-ulps Add float128 support for x86_64, x86. 2017-06-26 22:02:24 +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
math_private.h Fix math_private.h multiple include guards. 2015-11-20 23:46:23 +00:00
math-tests.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
mpatan2.c Update. 2001-03-12 00:04:52 +00:00
mpatan.c Update. 2001-03-12 00:04:52 +00:00
mpexp.c Update. 2001-03-12 00:04:52 +00:00
mplog.c Update. 2001-03-12 00:04:52 +00:00
mpsqrt.c Update. 2001-03-12 00:04:52 +00:00
s_asinh.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_asinhf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_asinhl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_atan.S Refactor i386 libm code forcing underflow exceptions. 2015-09-24 21:41:00 +00:00
s_atanf.S Refactor i386 libm code forcing underflow exceptions. 2015-09-24 21:41:00 +00:00
s_atanl.c Update. 2001-05-06 17:03:45 +00:00
s_cbrt.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_cbrtf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_cbrtl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_ceil.S Avoid "inexact" exceptions in i386/x86_64 ceil functions (bug 15479). 2016-06-27 17:24:30 +00:00
s_ceilf.S Avoid "inexact" exceptions in i386/x86_64 ceil functions (bug 15479). 2016-06-27 17:24:30 +00:00
s_ceill.S Avoid "inexact" exceptions in i386/x86_64 ceil functions (bug 15479). 2016-06-27 17:24:30 +00:00
s_copysign.S
s_copysignf.S
s_copysignl.S
s_expm1.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_expm1f.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_expm1l.S Fix x86/x86_64 expm1l inaccuracy and exceptions (bugs 13885, 13923). 2012-05-07 19:13:08 +00:00
s_fabs.S Update. 2002-04-03 00:36:12 +00:00
s_fabsf.S Update. 2002-04-03 00:36:12 +00:00
s_fabsl.S Update. 2002-04-03 00:36:12 +00:00
s_fdim.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_finite.S Update. 2002-09-10 01:40:26 +00:00
s_finitef.S Update. 2002-09-10 01:40:26 +00:00
s_finitel.S Update. 2002-09-10 01:40:26 +00:00
s_floor.S Avoid "inexact" exceptions in i386/x86_64 floor functions (bug 15479). 2016-06-27 17:25:47 +00:00
s_floorf.S Avoid "inexact" exceptions in i386/x86_64 floor functions (bug 15479). 2016-06-27 17:25:47 +00:00
s_floorl.S Avoid "inexact" exceptions in i386/x86_64 floor functions (bug 15479). 2016-06-27 17:25:47 +00:00
s_fmax.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_fmaxf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_fmaxl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_fmin.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_fminf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_fminl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_fpclassifyl.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_frexp.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_frexpf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_frexpl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_isinfl.c Use <> for math.h and math_private.h everywhere. 2012-03-09 16:09:10 -08:00
s_isnanl.c Use <> for math.h and math_private.h everywhere. 2012-03-09 16:09:10 -08:00
s_llrint.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_llrintf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_llrintl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_log1p.S Refactor i386 libm code forcing underflow exceptions. 2015-09-24 21:41:00 +00:00
s_log1pf.S Refactor i386 libm code forcing underflow exceptions. 2015-09-24 21:41:00 +00:00
s_log1pl.S Fix i386/x86_64 log1pl (sNaN) (bug 20229). 2016-06-08 23:11:42 +00:00
s_logb.S
s_logbf.S
s_logbl.c Update. 2001-09-18 14:13:20 +00:00
s_lrint.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_lrintf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_lrintl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_nearbyint.S Simplify x86 nearbyint functions. 2016-06-22 15:40:30 +00:00
s_nearbyintf.S Simplify x86 nearbyint functions. 2016-06-22 15:40:30 +00:00
s_nearbyintl.S Simplify x86 nearbyint functions. 2016-06-22 15:40:30 +00:00
s_nextafterl.c Fix x86/x86_64 nextafterl incrementing negative subnormals (bug 20205). 2016-06-03 21:30:12 +00:00
s_nexttoward.c Make nextafter, nexttoward set errno (bug 6799). 2015-11-02 18:54:19 +00:00
s_nexttowardf.c Make nextafter, nexttoward set errno (bug 6799). 2015-11-02 18:54:19 +00:00
s_remquo.S Remove remaining bounded-pointers support from i386 .S files. 2013-02-21 22:21:52 +00:00
s_remquof.S Remove remaining bounded-pointers support from i386 .S files. 2013-02-21 22:21:52 +00:00
s_remquol.S Remove remaining bounded-pointers support from i386 .S files. 2013-02-21 22:21:52 +00:00
s_rint.S
s_rintf.S
s_rintl.c Update. 2001-09-18 14:13:20 +00:00
s_scalbln.c
s_scalblnf.c
s_scalblnl.c
s_scalbn.S Avoid excess range in results from i386 scalb functions (bug 18981). 2015-09-18 20:34:59 +00:00
s_scalbnf.S Avoid excess range in results from i386 scalb functions (bug 18981). 2015-09-18 20:34:59 +00:00
s_scalbnl.S Make scalbn set errno (bug 6803). 2015-09-16 21:11:00 +00:00
s_significand.S
s_significandf.S
s_significandl.c (__significandl): Really return significand and not the exponent. 2003-01-07 07:42:11 +00:00
s_trunc.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_truncf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
s_truncl.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
slowexp.c Update. 2001-03-12 00:04:52 +00:00
slowpow.c Update. 2001-03-12 00:04:52 +00:00
t_exp.c
Versions
w_sqrt_compat.c Move wrappers to libm-compat-calls-auto 2017-01-04 16:25:04 -02:00