1996-03-05 21:41:30 +00:00
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/*
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2001-03-12 00:04:52 +00:00
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* IBM Accurate Mathematical Library
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2002-07-06 06:36:39 +00:00
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* written by International Business Machines Corp.
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2017-01-01 00:14:16 +00:00
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* Copyright (C) 2001-2017 Free Software Foundation, Inc.
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1996-03-05 21:41:30 +00:00
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*
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2001-03-12 00:04:52 +00:00
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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2002-08-26 22:40:48 +00:00
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* the Free Software Foundation; either version 2.1 of the License, or
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2001-03-12 00:04:52 +00:00
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* (at your option) any later version.
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1996-03-05 21:41:30 +00:00
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*
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2001-03-12 00:04:52 +00:00
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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2002-08-20 21:51:55 +00:00
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* GNU Lesser General Public License for more details.
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1996-03-05 21:41:30 +00:00
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*
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2001-03-12 00:04:52 +00:00
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* You should have received a copy of the GNU Lesser General Public License
|
2012-02-09 23:18:22 +00:00
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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1996-03-05 21:41:30 +00:00
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*/
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2001-03-12 00:04:52 +00:00
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/************************************************************************/
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/* MODULE_NAME: atnat.c */
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/* */
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/* FUNCTIONS: uatan */
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/* atanMp */
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/* signArctan */
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/* */
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/* */
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/* FILES NEEDED: dla.h endian.h mpa.h mydefs.h atnat.h */
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/* mpatan.c mpatan2.c mpsqrt.c */
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/* uatan.tbl */
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/* */
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/* An ultimate atan() routine. Given an IEEE double machine number x */
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/* it computes the correctly rounded (to nearest) value of atan(x). */
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/* */
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/* Assumption: Machine arithmetic operations are performed in */
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/* round to nearest mode of IEEE 754 standard. */
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/* */
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/************************************************************************/
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1996-03-05 21:41:30 +00:00
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2011-10-23 16:50:28 +00:00
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#include <dla.h>
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2001-03-12 00:04:52 +00:00
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#include "mpa.h"
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#include "MathLib.h"
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#include "uatan.tbl"
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#include "atnat.h"
|
2015-04-08 17:14:12 +00:00
|
|
|
#include <fenv.h>
|
Fix atan / atan2 missing underflows (bug 15319).
This patch fixes bug 15319, missing underflows from atan / atan2 when
the result of atan is very close to its small argument (or that of
atan2 is very close to the ratio of its arguments, which may be an
exact division).
The usual approach of doing an underflowing computation if the
computed result is subnormal is followed. For 32-bit x86, there are
extra complications: the inline __ieee754_atan2 in bits/mathinline.h
needs to be disabled for float and double because other libm functions
using it generally rely on getting proper underflow exceptions from
it, while the out-of-line functions have to remove excess range and
precision from the underflowing result so as to return an exact 0 in
the case where errno should be set for underflow to 0. (The failures
I saw without that are similar to those Carlos reported for other
functions, where I haven't seen a response to
<https://sourceware.org/ml/libc-alpha/2015-01/msg00485.html>
confirming if my diagnosis is correct. Arguably all libm functions
with float and double returns should remove excess range and
precision, but that's a separate matter.)
The x86_64 long double case reported in a comment in bug 15319 is not
a bug (it's an argument of LDBL_MIN, and x86_64 is an after-rounding
architecture so the correct IEEE result is not to raise underflow in
the given rounding mode, in addition to treating the result as an
exact LDBL_MIN being within the newly clarified documentation of
accuracy goals). I'm presuming that the fpatan instruction can be
trusted to raise appropriate exceptions when the (long double) result
underflows (after rounding) and so no changes are needed for x86 /
x86_64 long double functions here; empirically this is the case for
the cases covered in the testsuite, on my system.
Tested for x86_64, x86, powerpc and mips64. Only 32-bit x86 needs
ulps updates (for the changes to inlines meaning some functions no
longer get excess precision from their __ieee754_atan2* calls).
[BZ #15319]
* sysdeps/i386/fpu/e_atan2.S (dbl_min): New object.
(MO): New macro.
(__ieee754_atan2): For results with small absolute value, force
underflow exception and remove excess range and precision from
return value.
* sysdeps/i386/fpu/e_atan2f.S (flt_min): New object.
(MO): New macro.
(__ieee754_atan2f): For results with small absolute value, force
underflow exception and remove excess range and precision from
return value.
* sysdeps/i386/fpu/s_atan.S (dbl_min): New object.
(MO): New macro.
(__atan): For results with small absolute value, force underflow
exception and remove excess range and precision from return value.
* sysdeps/i386/fpu/s_atanf.S (flt_min): New object.
(MO): New macro.
(__atanf): For results with small absolute value, force underflow
exception and remove excess range and precision from return value.
* sysdeps/ieee754/dbl-64/e_atan2.c: Include <float.h> and
<math.h>.
(__ieee754_atan2): Force underflow exception for results with
small absolute value.
* sysdeps/ieee754/dbl-64/s_atan.c: Include <float.h> and
<math_private.h>.
(atan): Force underflow exception for results with small absolute
value.
* sysdeps/ieee754/flt-32/s_atanf.c: Include <float.h>.
(__atanf): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/ldbl-128/s_atanl.c: Include <float.h> and
<math.h>.
(__atanl): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/ldbl-128ibm/s_atanl.c: Include <float.h>.
(__atanl): Force underflow exception for results with small
absolute value.
* sysdeps/x86/fpu/bits/mathinline.h
[!__SSE2_MATH__ && !__x86_64__ && __LIBC_INTERNAL_MATH_INLINES]
(__ieee754_atan2): Only define inline for long double.
* sysdeps/x86_64/fpu/multiarch/e_atan2.c
[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Include <math.h>.
* math/auto-libm-test-in: Do not mark underflow exceptions as
possibly missing for bug 15319. Add more tests of atan2.
* math/auto-libm-test-out: Regenerated.
* math/libm-test.inc (casin_test_data): Do not mark underflow
exceptions as possibly missing for bug 15319.
(casinh_test_data): Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Update.
2015-02-18 21:10:49 +00:00
|
|
|
#include <float.h>
|
2017-10-02 23:16:56 +00:00
|
|
|
#include <libm-alias-double.h>
|
2012-03-09 19:29:16 +00:00
|
|
|
#include <math.h>
|
Fix atan / atan2 missing underflows (bug 15319).
This patch fixes bug 15319, missing underflows from atan / atan2 when
the result of atan is very close to its small argument (or that of
atan2 is very close to the ratio of its arguments, which may be an
exact division).
The usual approach of doing an underflowing computation if the
computed result is subnormal is followed. For 32-bit x86, there are
extra complications: the inline __ieee754_atan2 in bits/mathinline.h
needs to be disabled for float and double because other libm functions
using it generally rely on getting proper underflow exceptions from
it, while the out-of-line functions have to remove excess range and
precision from the underflowing result so as to return an exact 0 in
the case where errno should be set for underflow to 0. (The failures
I saw without that are similar to those Carlos reported for other
functions, where I haven't seen a response to
<https://sourceware.org/ml/libc-alpha/2015-01/msg00485.html>
confirming if my diagnosis is correct. Arguably all libm functions
with float and double returns should remove excess range and
precision, but that's a separate matter.)
The x86_64 long double case reported in a comment in bug 15319 is not
a bug (it's an argument of LDBL_MIN, and x86_64 is an after-rounding
architecture so the correct IEEE result is not to raise underflow in
the given rounding mode, in addition to treating the result as an
exact LDBL_MIN being within the newly clarified documentation of
accuracy goals). I'm presuming that the fpatan instruction can be
trusted to raise appropriate exceptions when the (long double) result
underflows (after rounding) and so no changes are needed for x86 /
x86_64 long double functions here; empirically this is the case for
the cases covered in the testsuite, on my system.
Tested for x86_64, x86, powerpc and mips64. Only 32-bit x86 needs
ulps updates (for the changes to inlines meaning some functions no
longer get excess precision from their __ieee754_atan2* calls).
[BZ #15319]
* sysdeps/i386/fpu/e_atan2.S (dbl_min): New object.
(MO): New macro.
(__ieee754_atan2): For results with small absolute value, force
underflow exception and remove excess range and precision from
return value.
* sysdeps/i386/fpu/e_atan2f.S (flt_min): New object.
(MO): New macro.
(__ieee754_atan2f): For results with small absolute value, force
underflow exception and remove excess range and precision from
return value.
* sysdeps/i386/fpu/s_atan.S (dbl_min): New object.
(MO): New macro.
(__atan): For results with small absolute value, force underflow
exception and remove excess range and precision from return value.
* sysdeps/i386/fpu/s_atanf.S (flt_min): New object.
(MO): New macro.
(__atanf): For results with small absolute value, force underflow
exception and remove excess range and precision from return value.
* sysdeps/ieee754/dbl-64/e_atan2.c: Include <float.h> and
<math.h>.
(__ieee754_atan2): Force underflow exception for results with
small absolute value.
* sysdeps/ieee754/dbl-64/s_atan.c: Include <float.h> and
<math_private.h>.
(atan): Force underflow exception for results with small absolute
value.
* sysdeps/ieee754/flt-32/s_atanf.c: Include <float.h>.
(__atanf): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/ldbl-128/s_atanl.c: Include <float.h> and
<math.h>.
(__atanl): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/ldbl-128ibm/s_atanl.c: Include <float.h>.
(__atanl): Force underflow exception for results with small
absolute value.
* sysdeps/x86/fpu/bits/mathinline.h
[!__SSE2_MATH__ && !__x86_64__ && __LIBC_INTERNAL_MATH_INLINES]
(__ieee754_atan2): Only define inline for long double.
* sysdeps/x86_64/fpu/multiarch/e_atan2.c
[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Include <math.h>.
* math/auto-libm-test-in: Do not mark underflow exceptions as
possibly missing for bug 15319. Add more tests of atan2.
* math/auto-libm-test-out: Regenerated.
* math/libm-test.inc (casin_test_data): Do not mark underflow
exceptions as possibly missing for bug 15319.
(casinh_test_data): Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Update.
2015-02-18 21:10:49 +00:00
|
|
|
#include <math_private.h>
|
2013-10-11 17:07:53 +00:00
|
|
|
#include <stap-probe.h>
|
2001-03-12 00:04:52 +00:00
|
|
|
|
2013-03-29 11:04:28 +00:00
|
|
|
void __mpatan (mp_no *, mp_no *, int); /* see definition in mpatan.c */
|
|
|
|
|
static double atanMp (double, const int[]);
|
2011-10-25 00:19:17 +00:00
|
|
|
|
|
|
|
|
/* Fix the sign of y and return */
|
2013-03-29 11:04:28 +00:00
|
|
|
static double
|
|
|
|
|
__signArctan (double x, double y)
|
|
|
|
|
{
|
|
|
|
|
return __copysign (y, x);
|
2011-10-25 00:19:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
2001-03-12 00:04:52 +00:00
|
|
|
/* An ultimate atan() routine. Given an IEEE double machine number x, */
|
|
|
|
|
/* routine computes the correctly rounded (to nearest) value of atan(x). */
|
2013-03-29 11:04:28 +00:00
|
|
|
double
|
2017-10-02 20:20:52 +00:00
|
|
|
__atan (double x)
|
2013-03-29 11:04:28 +00:00
|
|
|
{
|
|
|
|
|
double cor, s1, ss1, s2, ss2, t1, t2, t3, t7, t8, t9, t10, u, u2, u3,
|
2013-10-17 14:03:24 +00:00
|
|
|
v, vv, w, ww, y, yy, z, zz;
|
2011-10-24 18:21:18 +00:00
|
|
|
#ifndef DLA_FMS
|
2013-03-29 11:04:28 +00:00
|
|
|
double t4, t5, t6;
|
2001-03-12 07:57:09 +00:00
|
|
|
#endif
|
2013-03-29 11:04:28 +00:00
|
|
|
int i, ux, dx;
|
|
|
|
|
static const int pr[M] = { 6, 8, 10, 32 };
|
2001-03-12 00:04:52 +00:00
|
|
|
number num;
|
|
|
|
|
|
2013-03-29 11:04:28 +00:00
|
|
|
num.d = x;
|
|
|
|
|
ux = num.i[HIGH_HALF];
|
|
|
|
|
dx = num.i[LOW_HALF];
|
2001-03-12 00:04:52 +00:00
|
|
|
|
|
|
|
|
/* x=NaN */
|
2013-03-29 11:04:28 +00:00
|
|
|
if (((ux & 0x7ff00000) == 0x7ff00000)
|
|
|
|
|
&& (((ux & 0x000fffff) | dx) != 0x00000000))
|
|
|
|
|
return x + x;
|
2001-03-12 00:04:52 +00:00
|
|
|
|
|
|
|
|
/* Regular values of x, including denormals +-0 and +-INF */
|
2015-04-08 17:14:12 +00:00
|
|
|
SET_RESTORE_ROUND (FE_TONEAREST);
|
2013-03-29 11:07:26 +00:00
|
|
|
u = (x < 0) ? -x : x;
|
2013-03-29 11:04:28 +00:00
|
|
|
if (u < C)
|
|
|
|
|
{
|
|
|
|
|
if (u < B)
|
|
|
|
|
{
|
|
|
|
|
if (u < A)
|
Fix atan / atan2 missing underflows (bug 15319).
This patch fixes bug 15319, missing underflows from atan / atan2 when
the result of atan is very close to its small argument (or that of
atan2 is very close to the ratio of its arguments, which may be an
exact division).
The usual approach of doing an underflowing computation if the
computed result is subnormal is followed. For 32-bit x86, there are
extra complications: the inline __ieee754_atan2 in bits/mathinline.h
needs to be disabled for float and double because other libm functions
using it generally rely on getting proper underflow exceptions from
it, while the out-of-line functions have to remove excess range and
precision from the underflowing result so as to return an exact 0 in
the case where errno should be set for underflow to 0. (The failures
I saw without that are similar to those Carlos reported for other
functions, where I haven't seen a response to
<https://sourceware.org/ml/libc-alpha/2015-01/msg00485.html>
confirming if my diagnosis is correct. Arguably all libm functions
with float and double returns should remove excess range and
precision, but that's a separate matter.)
The x86_64 long double case reported in a comment in bug 15319 is not
a bug (it's an argument of LDBL_MIN, and x86_64 is an after-rounding
architecture so the correct IEEE result is not to raise underflow in
the given rounding mode, in addition to treating the result as an
exact LDBL_MIN being within the newly clarified documentation of
accuracy goals). I'm presuming that the fpatan instruction can be
trusted to raise appropriate exceptions when the (long double) result
underflows (after rounding) and so no changes are needed for x86 /
x86_64 long double functions here; empirically this is the case for
the cases covered in the testsuite, on my system.
Tested for x86_64, x86, powerpc and mips64. Only 32-bit x86 needs
ulps updates (for the changes to inlines meaning some functions no
longer get excess precision from their __ieee754_atan2* calls).
[BZ #15319]
* sysdeps/i386/fpu/e_atan2.S (dbl_min): New object.
(MO): New macro.
(__ieee754_atan2): For results with small absolute value, force
underflow exception and remove excess range and precision from
return value.
* sysdeps/i386/fpu/e_atan2f.S (flt_min): New object.
(MO): New macro.
(__ieee754_atan2f): For results with small absolute value, force
underflow exception and remove excess range and precision from
return value.
* sysdeps/i386/fpu/s_atan.S (dbl_min): New object.
(MO): New macro.
(__atan): For results with small absolute value, force underflow
exception and remove excess range and precision from return value.
* sysdeps/i386/fpu/s_atanf.S (flt_min): New object.
(MO): New macro.
(__atanf): For results with small absolute value, force underflow
exception and remove excess range and precision from return value.
* sysdeps/ieee754/dbl-64/e_atan2.c: Include <float.h> and
<math.h>.
(__ieee754_atan2): Force underflow exception for results with
small absolute value.
* sysdeps/ieee754/dbl-64/s_atan.c: Include <float.h> and
<math_private.h>.
(atan): Force underflow exception for results with small absolute
value.
* sysdeps/ieee754/flt-32/s_atanf.c: Include <float.h>.
(__atanf): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/ldbl-128/s_atanl.c: Include <float.h> and
<math.h>.
(__atanl): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/ldbl-128ibm/s_atanl.c: Include <float.h>.
(__atanl): Force underflow exception for results with small
absolute value.
* sysdeps/x86/fpu/bits/mathinline.h
[!__SSE2_MATH__ && !__x86_64__ && __LIBC_INTERNAL_MATH_INLINES]
(__ieee754_atan2): Only define inline for long double.
* sysdeps/x86_64/fpu/multiarch/e_atan2.c
[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Include <math.h>.
* math/auto-libm-test-in: Do not mark underflow exceptions as
possibly missing for bug 15319. Add more tests of atan2.
* math/auto-libm-test-out: Regenerated.
* math/libm-test.inc (casin_test_data): Do not mark underflow
exceptions as possibly missing for bug 15319.
(casinh_test_data): Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Update.
2015-02-18 21:10:49 +00:00
|
|
|
{
|
2015-09-23 22:42:30 +00:00
|
|
|
math_check_force_underflow_nonneg (u);
|
Fix atan / atan2 missing underflows (bug 15319).
This patch fixes bug 15319, missing underflows from atan / atan2 when
the result of atan is very close to its small argument (or that of
atan2 is very close to the ratio of its arguments, which may be an
exact division).
The usual approach of doing an underflowing computation if the
computed result is subnormal is followed. For 32-bit x86, there are
extra complications: the inline __ieee754_atan2 in bits/mathinline.h
needs to be disabled for float and double because other libm functions
using it generally rely on getting proper underflow exceptions from
it, while the out-of-line functions have to remove excess range and
precision from the underflowing result so as to return an exact 0 in
the case where errno should be set for underflow to 0. (The failures
I saw without that are similar to those Carlos reported for other
functions, where I haven't seen a response to
<https://sourceware.org/ml/libc-alpha/2015-01/msg00485.html>
confirming if my diagnosis is correct. Arguably all libm functions
with float and double returns should remove excess range and
precision, but that's a separate matter.)
The x86_64 long double case reported in a comment in bug 15319 is not
a bug (it's an argument of LDBL_MIN, and x86_64 is an after-rounding
architecture so the correct IEEE result is not to raise underflow in
the given rounding mode, in addition to treating the result as an
exact LDBL_MIN being within the newly clarified documentation of
accuracy goals). I'm presuming that the fpatan instruction can be
trusted to raise appropriate exceptions when the (long double) result
underflows (after rounding) and so no changes are needed for x86 /
x86_64 long double functions here; empirically this is the case for
the cases covered in the testsuite, on my system.
Tested for x86_64, x86, powerpc and mips64. Only 32-bit x86 needs
ulps updates (for the changes to inlines meaning some functions no
longer get excess precision from their __ieee754_atan2* calls).
[BZ #15319]
* sysdeps/i386/fpu/e_atan2.S (dbl_min): New object.
(MO): New macro.
(__ieee754_atan2): For results with small absolute value, force
underflow exception and remove excess range and precision from
return value.
* sysdeps/i386/fpu/e_atan2f.S (flt_min): New object.
(MO): New macro.
(__ieee754_atan2f): For results with small absolute value, force
underflow exception and remove excess range and precision from
return value.
* sysdeps/i386/fpu/s_atan.S (dbl_min): New object.
(MO): New macro.
(__atan): For results with small absolute value, force underflow
exception and remove excess range and precision from return value.
* sysdeps/i386/fpu/s_atanf.S (flt_min): New object.
(MO): New macro.
(__atanf): For results with small absolute value, force underflow
exception and remove excess range and precision from return value.
* sysdeps/ieee754/dbl-64/e_atan2.c: Include <float.h> and
<math.h>.
(__ieee754_atan2): Force underflow exception for results with
small absolute value.
* sysdeps/ieee754/dbl-64/s_atan.c: Include <float.h> and
<math_private.h>.
(atan): Force underflow exception for results with small absolute
value.
* sysdeps/ieee754/flt-32/s_atanf.c: Include <float.h>.
(__atanf): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/ldbl-128/s_atanl.c: Include <float.h> and
<math.h>.
(__atanl): Force underflow exception for results with small
absolute value.
* sysdeps/ieee754/ldbl-128ibm/s_atanl.c: Include <float.h>.
(__atanl): Force underflow exception for results with small
absolute value.
* sysdeps/x86/fpu/bits/mathinline.h
[!__SSE2_MATH__ && !__x86_64__ && __LIBC_INTERNAL_MATH_INLINES]
(__ieee754_atan2): Only define inline for long double.
* sysdeps/x86_64/fpu/multiarch/e_atan2.c
[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Include <math.h>.
* math/auto-libm-test-in: Do not mark underflow exceptions as
possibly missing for bug 15319. Add more tests of atan2.
* math/auto-libm-test-out: Regenerated.
* math/libm-test.inc (casin_test_data): Do not mark underflow
exceptions as possibly missing for bug 15319.
(casinh_test_data): Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Update.
2015-02-18 21:10:49 +00:00
|
|
|
return x;
|
|
|
|
|
}
|
2013-03-29 11:04:28 +00:00
|
|
|
else
|
|
|
|
|
{ /* A <= u < B */
|
|
|
|
|
v = x * x;
|
|
|
|
|
yy = d11.d + v * d13.d;
|
|
|
|
|
yy = d9.d + v * yy;
|
|
|
|
|
yy = d7.d + v * yy;
|
|
|
|
|
yy = d5.d + v * yy;
|
|
|
|
|
yy = d3.d + v * yy;
|
|
|
|
|
yy *= x * v;
|
|
|
|
|
|
|
|
|
|
if ((y = x + (yy - U1 * x)) == x + (yy + U1 * x))
|
|
|
|
|
return y;
|
|
|
|
|
|
|
|
|
|
EMULV (x, x, v, vv, t1, t2, t3, t4, t5); /* v+vv=x^2 */
|
|
|
|
|
|
|
|
|
|
s1 = f17.d + v * f19.d;
|
|
|
|
|
s1 = f15.d + v * s1;
|
|
|
|
|
s1 = f13.d + v * s1;
|
|
|
|
|
s1 = f11.d + v * s1;
|
|
|
|
|
s1 *= v;
|
|
|
|
|
|
2013-03-29 11:07:26 +00:00
|
|
|
ADD2 (f9.d, ff9.d, s1, 0, s2, ss2, t1, t2);
|
2013-03-29 11:04:28 +00:00
|
|
|
MUL2 (v, vv, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (f7.d, ff7.d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
MUL2 (v, vv, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (f5.d, ff5.d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
MUL2 (v, vv, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (f3.d, ff3.d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
MUL2 (v, vv, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
2013-03-29 11:07:26 +00:00
|
|
|
MUL2 (x, 0, s1, ss1, s2, ss2, t1, t2, t3, t4, t5, t6, t7,
|
2013-03-29 11:04:28 +00:00
|
|
|
t8);
|
2013-03-29 11:07:26 +00:00
|
|
|
ADD2 (x, 0, s2, ss2, s1, ss1, t1, t2);
|
2013-03-29 11:04:28 +00:00
|
|
|
if ((y = s1 + (ss1 - U5 * s1)) == s1 + (ss1 + U5 * s1))
|
|
|
|
|
return y;
|
|
|
|
|
|
|
|
|
|
return atanMp (x, pr);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{ /* B <= u < C */
|
|
|
|
|
i = (TWO52 + TWO8 * u) - TWO52;
|
|
|
|
|
i -= 16;
|
|
|
|
|
z = u - cij[i][0].d;
|
|
|
|
|
yy = cij[i][5].d + z * cij[i][6].d;
|
|
|
|
|
yy = cij[i][4].d + z * yy;
|
|
|
|
|
yy = cij[i][3].d + z * yy;
|
|
|
|
|
yy = cij[i][2].d + z * yy;
|
|
|
|
|
yy *= z;
|
|
|
|
|
|
|
|
|
|
t1 = cij[i][1].d;
|
|
|
|
|
if (i < 112)
|
|
|
|
|
{
|
|
|
|
|
if (i < 48)
|
|
|
|
|
u2 = U21; /* u < 1/4 */
|
|
|
|
|
else
|
|
|
|
|
u2 = U22;
|
|
|
|
|
} /* 1/4 <= u < 1/2 */
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
if (i < 176)
|
|
|
|
|
u2 = U23; /* 1/2 <= u < 3/4 */
|
|
|
|
|
else
|
|
|
|
|
u2 = U24;
|
|
|
|
|
} /* 3/4 <= u <= 1 */
|
|
|
|
|
if ((y = t1 + (yy - u2 * t1)) == t1 + (yy + u2 * t1))
|
|
|
|
|
return __signArctan (x, y);
|
|
|
|
|
|
|
|
|
|
z = u - hij[i][0].d;
|
|
|
|
|
|
|
|
|
|
s1 = hij[i][14].d + z * hij[i][15].d;
|
|
|
|
|
s1 = hij[i][13].d + z * s1;
|
|
|
|
|
s1 = hij[i][12].d + z * s1;
|
|
|
|
|
s1 = hij[i][11].d + z * s1;
|
|
|
|
|
s1 *= z;
|
|
|
|
|
|
2013-03-29 11:07:26 +00:00
|
|
|
ADD2 (hij[i][9].d, hij[i][10].d, s1, 0, s2, ss2, t1, t2);
|
|
|
|
|
MUL2 (z, 0, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
2013-03-29 11:04:28 +00:00
|
|
|
ADD2 (hij[i][7].d, hij[i][8].d, s1, ss1, s2, ss2, t1, t2);
|
2013-03-29 11:07:26 +00:00
|
|
|
MUL2 (z, 0, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
2013-03-29 11:04:28 +00:00
|
|
|
ADD2 (hij[i][5].d, hij[i][6].d, s1, ss1, s2, ss2, t1, t2);
|
2013-03-29 11:07:26 +00:00
|
|
|
MUL2 (z, 0, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
2013-03-29 11:04:28 +00:00
|
|
|
ADD2 (hij[i][3].d, hij[i][4].d, s1, ss1, s2, ss2, t1, t2);
|
2013-03-29 11:07:26 +00:00
|
|
|
MUL2 (z, 0, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
2013-03-29 11:04:28 +00:00
|
|
|
ADD2 (hij[i][1].d, hij[i][2].d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
if ((y = s2 + (ss2 - U6 * s2)) == s2 + (ss2 + U6 * s2))
|
|
|
|
|
return __signArctan (x, y);
|
|
|
|
|
|
|
|
|
|
return atanMp (x, pr);
|
|
|
|
|
}
|
2001-03-12 00:04:52 +00:00
|
|
|
}
|
2013-03-29 11:04:28 +00:00
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
if (u < D)
|
|
|
|
|
{ /* C <= u < D */
|
2013-03-29 11:10:36 +00:00
|
|
|
w = 1 / u;
|
2013-03-29 11:04:28 +00:00
|
|
|
EMULV (w, u, t1, t2, t3, t4, t5, t6, t7);
|
2013-03-29 11:10:36 +00:00
|
|
|
ww = w * ((1 - t1) - t2);
|
2013-03-29 11:04:28 +00:00
|
|
|
i = (TWO52 + TWO8 * w) - TWO52;
|
|
|
|
|
i -= 16;
|
|
|
|
|
z = (w - cij[i][0].d) + ww;
|
|
|
|
|
|
|
|
|
|
yy = cij[i][5].d + z * cij[i][6].d;
|
|
|
|
|
yy = cij[i][4].d + z * yy;
|
|
|
|
|
yy = cij[i][3].d + z * yy;
|
|
|
|
|
yy = cij[i][2].d + z * yy;
|
2013-10-17 14:03:24 +00:00
|
|
|
yy = HPI1 - z * yy;
|
1996-03-05 21:41:30 +00:00
|
|
|
|
2013-03-29 11:04:28 +00:00
|
|
|
t1 = HPI - cij[i][1].d;
|
|
|
|
|
if (i < 112)
|
2013-10-17 14:03:24 +00:00
|
|
|
u3 = U31; /* w < 1/2 */
|
2013-03-29 11:04:28 +00:00
|
|
|
else
|
2013-10-17 14:03:24 +00:00
|
|
|
u3 = U32; /* w >= 1/2 */
|
2013-03-29 11:04:28 +00:00
|
|
|
if ((y = t1 + (yy - u3)) == t1 + (yy + u3))
|
|
|
|
|
return __signArctan (x, y);
|
|
|
|
|
|
2013-10-17 14:03:24 +00:00
|
|
|
DIV2 (1, 0, u, 0, w, ww, t1, t2, t3, t4, t5, t6, t7, t8, t9,
|
2013-03-29 11:04:28 +00:00
|
|
|
t10);
|
|
|
|
|
t1 = w - hij[i][0].d;
|
|
|
|
|
EADD (t1, ww, z, zz);
|
|
|
|
|
|
|
|
|
|
s1 = hij[i][14].d + z * hij[i][15].d;
|
|
|
|
|
s1 = hij[i][13].d + z * s1;
|
|
|
|
|
s1 = hij[i][12].d + z * s1;
|
|
|
|
|
s1 = hij[i][11].d + z * s1;
|
|
|
|
|
s1 *= z;
|
|
|
|
|
|
2013-03-29 11:07:26 +00:00
|
|
|
ADD2 (hij[i][9].d, hij[i][10].d, s1, 0, s2, ss2, t1, t2);
|
2013-03-29 11:04:28 +00:00
|
|
|
MUL2 (z, zz, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (hij[i][7].d, hij[i][8].d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
MUL2 (z, zz, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (hij[i][5].d, hij[i][6].d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
MUL2 (z, zz, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (hij[i][3].d, hij[i][4].d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
MUL2 (z, zz, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (hij[i][1].d, hij[i][2].d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
SUB2 (HPI, HPI1, s2, ss2, s1, ss1, t1, t2);
|
|
|
|
|
if ((y = s1 + (ss1 - U7)) == s1 + (ss1 + U7))
|
|
|
|
|
return __signArctan (x, y);
|
|
|
|
|
|
|
|
|
|
return atanMp (x, pr);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
if (u < E)
|
2013-10-17 14:03:24 +00:00
|
|
|
{ /* D <= u < E */
|
2013-03-29 11:10:36 +00:00
|
|
|
w = 1 / u;
|
2013-03-29 11:04:28 +00:00
|
|
|
v = w * w;
|
|
|
|
|
EMULV (w, u, t1, t2, t3, t4, t5, t6, t7);
|
|
|
|
|
|
|
|
|
|
yy = d11.d + v * d13.d;
|
|
|
|
|
yy = d9.d + v * yy;
|
|
|
|
|
yy = d7.d + v * yy;
|
|
|
|
|
yy = d5.d + v * yy;
|
|
|
|
|
yy = d3.d + v * yy;
|
|
|
|
|
yy *= w * v;
|
|
|
|
|
|
2013-03-29 11:10:36 +00:00
|
|
|
ww = w * ((1 - t1) - t2);
|
2013-03-29 11:04:28 +00:00
|
|
|
ESUB (HPI, w, t3, cor);
|
|
|
|
|
yy = ((HPI1 + cor) - ww) - yy;
|
|
|
|
|
if ((y = t3 + (yy - U4)) == t3 + (yy + U4))
|
|
|
|
|
return __signArctan (x, y);
|
|
|
|
|
|
2013-10-17 14:03:24 +00:00
|
|
|
DIV2 (1, 0, u, 0, w, ww, t1, t2, t3, t4, t5, t6, t7, t8,
|
2013-03-29 11:04:28 +00:00
|
|
|
t9, t10);
|
|
|
|
|
MUL2 (w, ww, w, ww, v, vv, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
|
|
|
|
|
s1 = f17.d + v * f19.d;
|
|
|
|
|
s1 = f15.d + v * s1;
|
|
|
|
|
s1 = f13.d + v * s1;
|
|
|
|
|
s1 = f11.d + v * s1;
|
|
|
|
|
s1 *= v;
|
|
|
|
|
|
2013-03-29 11:07:26 +00:00
|
|
|
ADD2 (f9.d, ff9.d, s1, 0, s2, ss2, t1, t2);
|
2013-03-29 11:04:28 +00:00
|
|
|
MUL2 (v, vv, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (f7.d, ff7.d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
MUL2 (v, vv, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (f5.d, ff5.d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
MUL2 (v, vv, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (f3.d, ff3.d, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
MUL2 (v, vv, s2, ss2, s1, ss1, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
MUL2 (w, ww, s1, ss1, s2, ss2, t1, t2, t3, t4, t5, t6, t7, t8);
|
|
|
|
|
ADD2 (w, ww, s2, ss2, s1, ss1, t1, t2);
|
|
|
|
|
SUB2 (HPI, HPI1, s1, ss1, s2, ss2, t1, t2);
|
|
|
|
|
|
|
|
|
|
if ((y = s2 + (ss2 - U8)) == s2 + (ss2 + U8))
|
|
|
|
|
return __signArctan (x, y);
|
|
|
|
|
|
|
|
|
|
return atanMp (x, pr);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* u >= E */
|
|
|
|
|
if (x > 0)
|
|
|
|
|
return HPI;
|
|
|
|
|
else
|
|
|
|
|
return MHPI;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
1996-03-05 21:41:30 +00:00
|
|
|
}
|
2001-03-12 00:04:52 +00:00
|
|
|
|
|
|
|
|
/* Final stages. Compute atan(x) by multiple precision arithmetic */
|
2013-03-29 11:04:28 +00:00
|
|
|
static double
|
|
|
|
|
atanMp (double x, const int pr[])
|
|
|
|
|
{
|
|
|
|
|
mp_no mpx, mpy, mpy2, mperr, mpt1, mpy1;
|
|
|
|
|
double y1, y2;
|
|
|
|
|
int i, p;
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < M; i++)
|
|
|
|
|
{
|
|
|
|
|
p = pr[i];
|
|
|
|
|
__dbl_mp (x, &mpx, p);
|
|
|
|
|
__mpatan (&mpx, &mpy, p);
|
|
|
|
|
__dbl_mp (u9[i].d, &mpt1, p);
|
|
|
|
|
__mul (&mpy, &mpt1, &mperr, p);
|
|
|
|
|
__add (&mpy, &mperr, &mpy1, p);
|
|
|
|
|
__sub (&mpy, &mperr, &mpy2, p);
|
|
|
|
|
__mp_dbl (&mpy1, &y1, p);
|
|
|
|
|
__mp_dbl (&mpy2, &y2, p);
|
|
|
|
|
if (y1 == y2)
|
2013-10-11 17:07:53 +00:00
|
|
|
{
|
|
|
|
|
LIBC_PROBE (slowatan, 3, &p, &x, &y1);
|
|
|
|
|
return y1;
|
|
|
|
|
}
|
2013-03-29 11:04:28 +00:00
|
|
|
}
|
2013-10-11 17:07:53 +00:00
|
|
|
LIBC_PROBE (slowatan_inexact, 3, &p, &x, &y1);
|
2013-03-29 11:04:28 +00:00
|
|
|
return y1; /*if impossible to do exact computing */
|
2001-03-12 00:04:52 +00:00
|
|
|
}
|
|
|
|
|
|
2017-10-02 20:20:52 +00:00
|
|
|
#ifndef __atan
|
2017-10-02 23:16:56 +00:00
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libm_alias_double (__atan, atan)
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update from main archive 961005
Sun Oct 6 02:05:52 1996 Ulrich Drepper <drepper@cygnus.com>
* posix/getopt.c: Add casts to prevent warnings.
* posix/regex.c: Likewise.
* math/Makefile (long-m-routines, long-m-yes): Define to correct
values to make `long double' functions available.
(distribute): Add $(long-m-yes:=.c).
* sysdeps/libm-i387/s_ceill.S: Correct loading of return value.
Use long double instruction.
* sysdeps/libm-ieee754/e_atanhl.c (huge): Correct constant.
* sysdeps/libm-ieee754/e_asinhl.c: Likewise.
* sysdeps/libm-ieee754/s_tanhl.c: Likewise.
* sysdeps/libm-ieee754/e_coshl.c: New file.
* sysdeps/libm-ieee754/s_asinh.c [!NO_LONG_DOUBLE]: Define names
for `long double' version as alias.
* sysdeps/libm-ieee754/s_atan.c: Likewise.
* sysdeps/libm-ieee754/s_cbrt.c: Likewise.
* sysdeps/libm-ieee754/s_ceil.c: Likewise.
* sysdeps/libm-ieee754/s_copysign.c: Likewise.
* sysdeps/libm-ieee754/s_cos.c: Likewise.
* sysdeps/libm-ieee754/s_erf.c: Likewise.
* sysdeps/libm-ieee754/s_expm1.c: Likewise.
* sysdeps/libm-ieee754/s_fabs.c: Likewise.
* sysdeps/libm-ieee754/s_finite.c: Likewise.
* sysdeps/libm-ieee754/s_floor.c: Likewise.
* sysdeps/libm-ieee754/s_frexp.c: Likewise.
* sysdeps/libm-ieee754/s_ilogb.c: Likewise.
* sysdeps/libm-ieee754/s_ldexp.c: Likewise.
* sysdeps/libm-ieee754/s_log1p.c: Likewise.
* sysdeps/libm-ieee754/s_logb.c: Likewise.
* sysdeps/libm-ieee754/s_modf.c: Likewise.
* sysdeps/libm-ieee754/s_nextafter.c: Likewise.
* sysdeps/libm-ieee754/s_rint.c: Likewise.
* sysdeps/libm-ieee754/s_scalbn.c: Likewise.
* sysdeps/libm-ieee754/s_significand.c: Likewise.
* sysdeps/libm-ieee754/s_sin.c: Likewise.
* sysdeps/libm-ieee754/s_tan.c: Likewise.
* sysdeps/libm-ieee754/s_tanh.c: Likewise.
* sysdeps/libm-ieee754/w_acos.c: Likewise.
* sysdeps/libm-ieee754/w_acosh.c: Likewise.
* sysdeps/libm-ieee754/w_sin.c: Likewise.
* sysdeps/libm-ieee754/w_atan2.c: Likewise.
* sysdeps/libm-ieee754/w_atanh.c: Likewise.
* sysdeps/libm-ieee754/w_cabs.c: Likewise.
* sysdeps/libm-ieee754/w_cosh.c: Likewise.
* sysdeps/libm-ieee754/w_drem.c: Likewise.
* sysdeps/libm-ieee754/w_exp.c: Likewise.
* sysdeps/libm-ieee754/w_fmod.c: Likewise.
* sysdeps/libm-ieee754/w_gamma.c: Likewise.
* sysdeps/libm-ieee754/w_gamma_r.c: Likewise.
* sysdeps/libm-ieee754/w_hypot.c: Likewise.
* sysdeps/libm-ieee754/w_j0.c: Likewise.
* sysdeps/libm-ieee754/w_j1.c: Likewise.
* sysdeps/libm-ieee754/w_jn.c: Likewise.
* sysdeps/libm-ieee754/w_lgamma.c: Likewise.
* sysdeps/libm-ieee754/w_lgamma_r.c: Likewise.
* sysdeps/libm-ieee754/w_log.c: Likewise.
* sysdeps/libm-ieee754/w_log10.c: Likewise.
* sysdeps/libm-ieee754/w_pow.c: Likewise.
* sysdeps/libm-ieee754/w_remainder.c: Likewise.
* sysdeps/libm-ieee754/w_scalb.c: Likewise.
* sysdeps/libm-ieee754/w_sinh.c: Likewise.
* sysdeps/libm-ieee754/w_sqrt.c: Likewise.
Stub files for missing long double math functions.
* sysdeps/stub/e_acoshl.c: New file.
* sysdeps/stub/e_hypotl.c: New file.
* sysdeps/stub/e_j0l.c: New file.
* sysdeps/stub/e_j1l.c: New file.
* sysdeps/stub/e_jnl.c: New file.
* sysdeps/stub/e_lgammal_r.c: New file.
* sysdeps/stub/e_powl.c: New file.
* sysdeps/stub/e_rem_pio2l.c: New file.
* sysdeps/stub/e_sinhl.c: New file.
* sysdeps/stub/k_cosl.c: New file.
* sysdeps/stub/k_rem_pio2l.c: New file.
* sysdeps/stub/k_sinl.c: New file.
* sysdeps/stub/k_tanl.c: New file.
* sysdeps/stub/s_erfl.c: New file.
* sysdeps/stub/s_expm1l.c: New file.
* sysdeps/i386/__longjmp.S: Use PSEUDO_END macro to provide
.size directive.
* sysdeps/i386/bsd-_setjmp.S: Likewise.
* sysdeps/i386/bsd-setjmp.S: Likewise.
* sysdeps/i386/memchr.S: Likewise.
* sysdeps/i386/memcmp.S: Likewise.
* sysdeps/i386/setjmp.S: Likewise.
* sysdeps/i386/stpcpy.S: Likewise.
* sysdeps/i386/stpncpy.S: Likewise.
* sysdeps/i386/strchr.S: Likewise.
* sysdeps/i386/strcspn.S: Likewise.
* sysdeps/i386/strpbrk.S: Likewise.
* sysdeps/i386/strrchr.S: Likewise.
* sysdeps/i386/strspn.S: Likewise.
* sysdeps/i386/strtok.S: Likewise.
* sysdeps/i386/i486/strcat.S: Likewise.
* sysdeps/i386/i486/strlen.S: Likewise.
* sysdeps/i386/i586/memset.S: Likewise.
* sysdeps/i386/i586/strchr.S: Likewise.
* sysdeps/i386/i586/strlen.S: Likewise.
* sysdeps/libm-i387/e_acos.S: Likewise.
* sysdeps/libm-i387/e_acosl.S: Likewise.
* sysdeps/libm-i387/e_asin.S: Likewise.
* sysdeps/libm-i387/e_asinl.S: Likewise.
* sysdeps/libm-i387/e_atan2.S: Likewise.
* sysdeps/libm-i387/e_atan2l.S: Likewise.
* sysdeps/libm-i387/e_exp.S: Likewise.
* sysdeps/libm-i387/e_expl.S: Likewise.
* sysdeps/libm-i387/e_fmod.S: Likewise.
* sysdeps/libm-i387/e_fmodl.S: Likewise.
* sysdeps/libm-i387/e_log.S: Likewise.
* sysdeps/libm-i387/e_log10.S: Likewise.
* sysdeps/libm-i387/e_log10l.S: Likewise.
* sysdeps/libm-i387/e_logl.S: Likewise.
* sysdeps/libm-i387/e_remainder.S: Likewise.
* sysdeps/libm-i387/e_remainderf.S: Likewise.
* sysdeps/libm-i387/e_remainderl.S: Likewise.
* sysdeps/libm-i387/e_scalb.S: Likewise.
* sysdeps/libm-i387/e_scalbl.S: Likewise.
* sysdeps/libm-i387/e_sqrt.S: Likewise.
* sysdeps/libm-i387/e_sqrtf.S: Likewise.
* sysdeps/libm-i387/e_sqrtl.S: Likewise.
* sysdeps/libm-i387/s_atan.S: Likewise.
* sysdeps/libm-i387/s_atanf.S: Likewise.
* sysdeps/libm-i387/s_atanl.S: Likewise.
* sysdeps/libm-i387/s_ceil.S: Likewise.
* sysdeps/libm-i387/s_ceilf.S: Likewise.
* sysdeps/libm-i387/s_ceill.S: Likewise.
* sysdeps/libm-i387/s_copysign.S: Likewise.
* sysdeps/libm-i387/s_copysignf.S: Likewise.
* sysdeps/libm-i387/s_copysignl.S: Likewise.
* sysdeps/libm-i387/s_cos.S: Likewise.
* sysdeps/libm-i387/s_cosf.S: Likewise.
* sysdeps/libm-i387/s_cosl.S: Likewise.
* sysdeps/libm-i387/s_finite.S: Likewise.
* sysdeps/libm-i387/s_finitef.S: Likewise.
* sysdeps/libm-i387/s_finitel.S: Likewise.
* sysdeps/libm-i387/s_floor.S: Likewise.
* sysdeps/libm-i387/s_floorf.S: Likewise.
* sysdeps/libm-i387/s_floorl.S: Likewise.
* sysdeps/libm-i387/s_ilogb.S: Likewise.
* sysdeps/libm-i387/s_ilogbf.S: Likewise.
* sysdeps/libm-i387/s_ilogbl.S: Likewise.
* sysdeps/libm-i387/s_log1p.S: Likewise.
* sysdeps/libm-i387/s_log1pf.S: Likewise.
* sysdeps/libm-i387/s_log1pl.S: Likewise.
* sysdeps/libm-i387/s_logb.S: Likewise.
* sysdeps/libm-i387/s_logbf.S: Likewise.
* sysdeps/libm-i387/s_logbl.S: Likewise.
* sysdeps/libm-i387/s_rint.S: Likewise.
* sysdeps/libm-i387/s_rintf.S: Likewise.
* sysdeps/libm-i387/s_rintl.S: Likewise.
* sysdeps/libm-i387/s_scalbn.S: Likewise.
* sysdeps/libm-i387/s_scalbnf.S: Likewise.
* sysdeps/libm-i387/s_scalbnl.S: Likewise.
* sysdeps/libm-i387/s_significand.S: Likewise.
* sysdeps/libm-i387/s_significandf.S: Likewise.
* sysdeps/libm-i387/s_significandl.S: Likewise.
* sysdeps/libm-i387/s_sin.S: Likewise.
* sysdeps/libm-i387/s_sinf.S: Likewise.
* sysdeps/libm-i387/s_sinl.S: Likewise.
* sysdeps/libm-i387/s_tan.S: Likewise.
* sysdeps/libm-i387/s_tanf.S: Likewise.
* sysdeps/libm-i387/s_tanl.S: Likewise.
* sysdeps/unix/sysv/linux/i386/clone.S: Add .size directive.
* sysdeps/unix/sysv/linux/i386/mmap.S. Likewise.
* sysdeps/unix/sysv/linux/i386/socket.S. Likewise.
* sysdeps/unix/sysv/linux/i386/sysdep.S. More compact .size line.
* sysdeps/i386/sysdep.h (ASM_SIZE_DIRECTIVE): New macro. Used
to provide .size directive on ELF systems.
* sysdeps/unix/sysv/linux/i386/profil-counter.h: Include
<sigcontext.h> and rename parameter type to sigcontext.
* sysdeps/unix/sysv/linux/i386/sigcontext.h New file.
* sysdeps/unix/sysv/linux/i386/syscall.S: From Linux 2.1 on
negative values might occur as positive results. Test against
-125 to decide for error or not.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise for system calls.
Thu Oct 3 21:07:58 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* elf/dl-open.c: Use _DYNAMIC instead of _dl_start to decide
whether this is a statically linked program. The latter is now
always defined.
Fri Oct 4 02:08:10 1996 Bang Jun-Young <bangjy@nownuri.nowcom.co.kr>
* po/ko.po: Update.
Fri Oct 4 02:07:46 1996 Michel Robitaille <robitail@IRO.UMontreal.CA>
* po/fr.po: New file.
Fri Oct 4 05:04:52 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/i386/sigcontext.h: New file.
Add support for MD5 crypt replacement.
* Makefile (subdirs): Add crypt.
* shlib-versions: Add entry for libcrypt.
* crypt/md5-crypt.c: New file.
* crypt/md5.c: New file.
* crypt/md5.h: New file.
* sysdeps/generic/crypt-entry.c: New file.
* sysdeps/generic/crypt.h: New file.
Thu Oct 3 20:53:23 1996 Andreas Jaeger <aj@arthur.pfalz.de>
* dirent/tst-seekdir.c: Provide correct prototypes.
* io/test-utime.c: Likewise.
* malloc/mallocbug.c: Likewise.
* posix/testfnm.c: Likewise.
* stdio-common/xbug.c: Likewise.
* sysdeps/posix/cuserid.c: Likewise.
Wed Oct 2 13:33:48 1996 Richard Henderson <rth@tamu.edu>
Provide optimized string functions for Alpha processors.
* sysdeps/alpha/bzero.S: New file.
* sysdeps/alpha/memset.S: New file.
* sysdeps/alpha/stpcpy.S: New file.
* sysdeps/alpha/stpncpy.S: New file.
* sysdeps/alpha/strcat.S: New file.
* sysdeps/alpha/strchr.S: New file.
* sysdeps/alpha/strcpy.S: New file.
* sysdeps/alpha/strncat.S: New file.
* sysdeps/alpha/strncpy.S: New file.
* sysdeps/alpha/strrchr.S: New file.
* sysdeps/alpha/stxcpy.S: New file.
* sysdeps/alpha/stxncpy.S: New file.
* sysdeps/alpha/Makefile [$(sudir)==string]: Add stxcpy and
stxncpy to sysdep_routines.
Minor correction.
Wed Oct 2 13:41:48 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/generic/strtok.c: Don't set stored pointer to NULL when
notheing is found. This guarantees all subsequent calls behave
the same.
* sysdeps/generic/strtok_r.c: Likewise.
Mon Sep 30 22:27:36 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/posix/tempname.c (__stdio_gen_tempname): Don't declare
`i' as const.
Mon Sep 30 22:38:29 1996 Richard Henderson <rth@tamu.edu>
* sysdeps/generic/strtok.c: When we hit EOS, don't set olds to
NULL immediately; we're going to get called one more time.
* sysdeps/generic/strtok_r.c: Likewise.
Tue Oct 1 09:12:21 1996 Ulrich Drepper <drepper@cygnus.com>
* locale/programs/ld-time.c: Always write some bytes at the end of
the file even if no `era's are specified.
* stdio-common/tmpname.c (tmpbuf): Don't define as array of
pointers.
Tue Oct 1 01:43:11 1996 Ulrich Drepper <drepper@cygnus.com>
* libio/iofclose.c: Move unlocking to right position.
Mon Sep 30 03:08:34 1996 Richard Henderson <rth@tamu.edu>
* misc/Makefile: Kill force-wrapper.
* misc/force-wrapper.c: Delete.
* elf/eval.c: Add <string.h>.
* gmon/sys/gmon_out.h: Nonsense like `char foo[sizeof(char*)]'
followed by `bcopy(&ptr, &foo, sizeof(foo))' helps portability
and binary compatibility not at all. Better to do `char *foo'
followed by `foo = ptr' as it is much cleaner.
(struct gmon_hdr): Fix version.
(struct gmon_hist_hdr): Fix low_pc, high_pc, hist_size, prof_rate.
(struct gmon_cg_arc_record): Fix from_pc, self_pc, count.
* gmon/gmon.c: De-ansidecl-ify.
(write_hist): De-bcopy-fy.
(write_call_graph): Likewise.
* gmon/mcount.c: Assume _MCOUNT_DECL does the entire declaration.
* sysdeps/alpha/machine-gmon.h: Update _MCOUNT_DECL.
* sysdeps/generic/machine-gmon.h: Likewise.
* resolv/netdb.h: Add __set_h_errno to mimic __set_errno.
* nss/getXXent_r.c: Use __set_h_errno to set h_errno in all funcs.
* nss/nss_dns/dns-network.c: Likewise.
* resolv/getunamaddr.c: Likewise. Also use __set_errno where needed.
* resolv/getnetnamadr.c: Likewise.
* resolv/res_debug.c: Likewise.
* resolv/res_mkquery.c: Likewise.
* resolv/res_query.c: Likewise.
* libio/clearerr_u.c: It's not necessary to define __ protected
function so don't do it.
* libio/feof_u.c, libio/ferror_u.c, libio/fputc_u.c,
libio/getc_u.c, libio/getchar_u.c, libio/iofflush_u.c: Likewise.
* libio/fgetc.c: Avoid a warning by casting _IO_funlockfile for
the cleanup registrar.
* libio/fputc.c, libio/freopen.c, libio/fseek.c, libio/getc.c,
libio/getchar.c, libio/iofclose.c, libio/iofflush.c,
libio/iofgetpos.c, libio/iofgets.c, libio/iofputs.c,
libio/iofread.c, libio/iofsetpos.c, libio/ioftell.c,
libio/iofwrite.c, libio/iogetdelim.c, libio/iogets.c,
libio/ioputs.c, libio/iosetbuffer.c, libio/iosetvbuf.c,
libio/ioungetc.c, libio/putc.c, libio/putchar.c, libio/rewind.c:
Likewise.
* locale/programs/ld-ctype.c: Include <alloca.h>.
* login/login_tty.c: Get login_tty prototype from <utmp.h>.
* posix/sys/types.h: Change #defines to typedefs. This is looking
forward to more comprehensive namespace cleanups for C++.
* posix/unistd.h: Likewise for ssize_t.
* pwd/getpw.c: Prototype and rename getpw -> __getpw and add a
weak alias.
* resolv/base64.c: Don't do `for (NULL; ...)' as it causes
`statement with no effect' warnings.
* resolv/inet_neta.c: Include <string.h> for strlen.
* stdio-common/getline.c: Undef ssize_t before libio redefinition.
* stdio-common/tstgetln.c: Same. De-ansidecl-ify.
* stdio-common/vfprintf.c: Same for va_list.
* stdio-common/vfscanf.c: Same.
* stdio-common/reg-printf.c: Prototype the __ function.
* stdio-common/scanf.c [USE_IN_LIBIO]: Include <libioP.h> for
_IO_vscanf declaration.
* string/tester.c: Tsk, tsk. Don't cast pointers to int,
but to unsigned long for the health of 64-bit systems.
* sunrpc/svc_udp.c: Define MAX only if we don't have it yet.
Many system's <sys/param.h> pulls this in.
* sysdeps/generic/dl-cache.c: Kill the bottom half of the
patch doubled file.
* sysdeps/generic/pty.c (forkpty): Get login_tty decl from <utmp.h>
instead of defining it locally.
* sysdeps/posix/sigvec.c: Prototype wrapper_handler and convert_mask.
* sysdeps/stub/chflags.c: Prototype chflags.
* sysdeps/stub/fchflags.c: Prototype fchflags.
* sysdeps/stub/sstk.c: Prototype sstk.
* sysdeps/unix/alpha/sysdep.S: Add strong alias from errno
variable to __errno. Update __syscall_error to store to both
the global and per-thread variables.
* sysdeps/unix/sysv/linux/init-first.c: Change include of
init-first.h from "" to <> as "" does not search the include path.
Prototype _dl_start.
Sun Sep 29 14:41:17 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/Makefile ($(common-objpfx)s-proto.d): Make it a
pattern rule to get the right stem.
Sat Sep 28 01:30:06 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makefile ($(objpfx)version-info.h): Fix typo in previous change.
Sat Sep 28 00:44:38 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/posix/euidaccess.c (__set_errno): Fix typo.
Sat Sep 28 00:40:38 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* malloc/free.c (_free_internal): Don't call free recursively, use
the internal functions instead.
Sat Sep 28 00:23:20 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/posix/tempname.c (__stdio_gen_tempname) [USE_IN_LIBIO &&
_IO_MTSAFE_IO]: Allocate and initialize the file lock.
Fri Sep 27 23:58:17 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* catgets/gencat.c (main): Print version information on stdout,
not stderr.
* db/makedb.c: Likewise.
* locale/programs/locale.c: Likewise.
* locale/programs/localedef.c: Likewise.
Mon Sep 30 00:14:26 1996 Ulrich Drepper <drepper@cygnus.com>
Add implementation of netgroup.
* inet/Makefile (distributes): Add netgroup.h.
(routines): Add getnetgrent.c and getnetgrent_r.c.
* inet/getnetgrent.c: New file.
* inet/getnetgrent_r.c: New file.
* inet/netgroup.h: New file.
* netgroup.h: New file.
* nsswitch.h: New file.
* nss/Makefile (databases): Add getgrp.
* nss/databases.def: Add netgroup.
* nss/db-Makefile: Add rules for netgroup.
* nss/netgrp-lookup.c: New file.
* nss/nss.h: Add new status value NSS_STATUS_RETURN which will
always return without a check of the transition table.
* nss/nsswitch.h (struct service_user): Extend actions array to
five elements.
* nss/nsswitch.c (__nss_next): Allow NSS_STATUS_RETURN as legal
status value.
(nss_parse_service_list): Initialize action for NSS_STATUS_RETURN
to NSS_ACTION_RETURN.
* nss/nss_db/db-netgrp.c: New file.
* nss/nss_files/files-netgrp.c: New file.
* nss/nsswitch.conf: Add entry for netgroup.
* resolv/netdb.h: Add prototypes for netgroup functions.
* nss/nss_db/db-XXX.c: Use `enum nss_status' type when status
value is used.
Sun Sep 29 12:55:58 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/syscalls.list: Change funciton name for
_llseek to _llseek (not llseek).
Reported by Matthias Urlichs <smurf@smurf.noris.de>.
Sun Sep 29 05:34:32 1996 Ulrich Drepper <drepper@cygnus.com>
* inet/rcmd.c: Remove definition of MIN.
Sat Sep 28 14:22:51 1996 Ulrich Drepper <drepper@cygnus.com>
* dirent/readdir_r.c: Removed. We indeed need a real implementation.
* sysdeps/unix/readdir_r.c: New file.
* sysdeps/unix/readdir.c: Remove check for correct parameter
values. Let them simply die.
* manual/filesys.texi: Document readdir_r.
* sysdeps/gnu/errlist.awk: Define _sys_errlist as `const char* const'.
Proposed by Per Abrahamsen <abraham@dina.kvl.dk>.
1996-10-06 02:05:11 +00:00
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#endif
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