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Update Gnulib to v0.0-5874-g7170ee0.
This commit is contained in:
Ludovic Courtès
parent
97ec95b728
commit
231c0e0e61
20 changed files with 391 additions and 63 deletions
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@ -420,7 +420,9 @@ float.h: $(top_builddir)/config.status
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endif
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MOSTLYCLEANFILES += float.h float.h-t
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EXTRA_DIST += float.in.h
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EXTRA_DIST += float.c float.in.h
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EXTRA_libgnu_la_SOURCES += float.c
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## end gnulib module float
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33
lib/float.c
Normal file
33
lib/float.c
Normal file
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@ -0,0 +1,33 @@
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/* Auxiliary definitions for <float.h>.
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Copyright (C) 2011 Free Software Foundation, Inc.
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Written by Bruno Haible <bruno@clisp.org>, 2011.
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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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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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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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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include <float.h>
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#if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__
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const union gl_long_double_union gl_LDBL_MAX =
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{ { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL } };
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#elif defined __i386__
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const union gl_long_double_union gl_LDBL_MAX =
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{ { 0xFFFFFFFF, 0xFFFFFFFF, 32766 } };
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#else
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/* This declaration is solely to ensure that after preprocessing
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this file is never empty. */
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typedef int dummy;
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#endif
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111
lib/float.in.h
111
lib/float.in.h
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@ -29,6 +29,7 @@
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#define _@GUARD_PREFIX@_FLOAT_H
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/* 'long double' properties. */
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#if defined __i386__ && (defined __BEOS__ || defined __OpenBSD__)
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/* Number of mantissa units, in base FLT_RADIX. */
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# undef LDBL_MANT_DIG
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@ -59,5 +60,115 @@
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# define LDBL_MAX_10_EXP 4932
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#endif
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/* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
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precision in the compiler but 64 bits of precision at runtime. See
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<http://lists.gnu.org/archive/html/bug-gnulib/2008-07/msg00063.html>. */
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#if defined __i386__ && defined __FreeBSD__
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/* Number of mantissa units, in base FLT_RADIX. */
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# undef LDBL_MANT_DIG
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# define LDBL_MANT_DIG 64
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/* Number of decimal digits that is sufficient for representing a number. */
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# undef LDBL_DIG
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# define LDBL_DIG 18
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/* x-1 where x is the smallest representable number > 1. */
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# undef LDBL_EPSILON
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# define LDBL_EPSILON 1.084202172485504434007452800869941711426e-19L /* 2^-63 */
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/* Minimum e such that FLT_RADIX^(e-1) is a normalized number. */
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# undef LDBL_MIN_EXP
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# define LDBL_MIN_EXP (-16381)
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/* Maximum e such that FLT_RADIX^(e-1) is a representable finite number. */
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# undef LDBL_MAX_EXP
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# define LDBL_MAX_EXP 16384
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/* Minimum positive normalized number. */
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# undef LDBL_MIN
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# define LDBL_MIN 3.3621031431120935E-4932L /* = 0x1p-16382L */
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/* Maximum representable finite number. */
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# undef LDBL_MAX
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/* LDBL_MAX is represented as { 0xFFFFFFFF, 0xFFFFFFFF, 32766 }.
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But the largest literal that GCC allows us to write is
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0x0.fffffffffffff8p16384L = { 0xFFFFF800, 0xFFFFFFFF, 32766 }.
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So, define it like this through a reference to an external variable
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const unsigned int LDBL_MAX[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 32766 };
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extern const long double LDBL_MAX;
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Unfortunately, this is not a constant expression. */
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union gl_long_double_union
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{
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struct { unsigned int lo; unsigned int hi; unsigned int exponent; } xd;
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long double ld;
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};
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extern const union gl_long_double_union gl_LDBL_MAX;
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# define LDBL_MAX (gl_LDBL_MAX.ld)
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/* Minimum e such that 10^e is in the range of normalized numbers. */
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# undef LDBL_MIN_10_EXP
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# define LDBL_MIN_10_EXP (-4931)
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/* Maximum e such that 10^e is in the range of representable finite numbers. */
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# undef LDBL_MAX_10_EXP
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# define LDBL_MAX_10_EXP 4932
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#endif
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/* On AIX 7.1 with gcc 4.2, the values of LDBL_MIN_EXP, LDBL_MIN, LDBL_MAX are
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wrong. */
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#if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__
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# undef LDBL_MIN_EXP
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# define LDBL_MIN_EXP DBL_MIN_EXP
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# undef LDBL_MIN_10_EXP
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# define LDBL_MIN_10_EXP DBL_MIN_10_EXP
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# undef LDBL_MIN
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# define LDBL_MIN 2.22507385850720138309023271733240406422e-308L /* DBL_MIN = 2^-1022 */
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# undef LDBL_MAX
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/* LDBL_MAX is represented as { 0x7FEFFFFF, 0xFFFFFFFF, 0x7C8FFFFF, 0xFFFFFFFF }.
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It is not easy to define:
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#define LDBL_MAX 1.79769313486231580793728971405302307166e308L
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is too small, whereas
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#define LDBL_MAX 1.79769313486231580793728971405302307167e308L
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is too large. Apparently a bug in GCC decimal-to-binary conversion.
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Also, I can't get values larger than
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#define LDBL63 ((long double) (1ULL << 63))
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#define LDBL882 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
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#define LDBL945 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
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#define LDBL1008 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
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#define LDBL_MAX (LDBL1008 * 65535.0L + LDBL945 * (long double) 9223372036821221375ULL + LDBL882 * (long double) 4611686018427387904ULL)
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which is represented as { 0x7FEFFFFF, 0xFFFFFFFF, 0x7C8FFFFF, 0xF8000000 }.
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So, define it like this through a reference to an external variable
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const double LDBL_MAX[2] = { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL };
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extern const long double LDBL_MAX;
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or through a pointer cast
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#define LDBL_MAX \
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(*(const long double *) (double[]) { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL })
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Unfortunately, this is not a constant expression, and the latter expression
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does not work well when GCC is optimizing.. */
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union gl_long_double_union
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{
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struct { double hi; double lo; } dd;
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long double ld;
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};
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extern const union gl_long_double_union gl_LDBL_MAX;
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# define LDBL_MAX (gl_LDBL_MAX.ld)
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#endif
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/* On IRIX 6.5, with cc, the value of LDBL_MANT_DIG is wrong.
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On IRIX 6.5, with gcc 4.2, the values of LDBL_MIN_EXP, LDBL_MIN, LDBL_EPSILON
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are wrong. */
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#if defined __sgi && (LDBL_MANT_DIG >= 106)
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# undef LDBL_MANT_DIG
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# define LDBL_MANT_DIG 106
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# if defined __GNUC__
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# undef LDBL_MIN_EXP
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# define LDBL_MIN_EXP DBL_MIN_EXP
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# undef LDBL_MIN_10_EXP
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# define LDBL_MIN_10_EXP DBL_MIN_10_EXP
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# undef LDBL_MIN
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# define LDBL_MIN 2.22507385850720138309023271733240406422e-308L /* DBL_MIN = 2^-1022 */
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# undef LDBL_EPSILON
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# define LDBL_EPSILON 2.46519032881566189191165176650870696773e-32L /* 2^-105 */
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# endif
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#endif
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#endif /* _@GUARD_PREFIX@_FLOAT_H */
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#endif /* _@GUARD_PREFIX@_FLOAT_H */
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@ -21,17 +21,20 @@
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#include <float.h>
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int gl_isinff (float x)
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int
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gl_isinff (float x)
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{
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return x < -FLT_MAX || x > FLT_MAX;
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}
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int gl_isinfd (double x)
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int
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gl_isinfd (double x)
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{
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return x < -DBL_MAX || x > DBL_MAX;
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}
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int gl_isinfl (long double x)
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int
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gl_isinfl (long double x)
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{
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return x < -LDBL_MAX || x > LDBL_MAX;
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}
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@ -19,6 +19,12 @@
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#ifndef _PATHMAX_H
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# define _PATHMAX_H
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/* POSIX:2008 defines PATH_MAX to be the maximum number of bytes in a filename,
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including the terminating NUL byte.
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<http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html>
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PATH_MAX is not defined on systems which have no limit on filename length,
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such as GNU/Hurd. */
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# include <unistd.h>
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# include <limits.h>
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@ -45,4 +51,13 @@
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# define PATH_MAX _POSIX_PATH_MAX
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# endif
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# ifdef __hpux
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/* On HP-UX, PATH_MAX designates the maximum number of bytes in a filename,
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*not* including the terminating NUL byte, and is set to 1023.
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Additionally, when _XOPEN_SOURCE is defined to 500 or more, PATH_MAX is
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not defined at all any more. */
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# undef PATH_MAX
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# define PATH_MAX 1024
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# endif
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#endif /* _PATHMAX_H */
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15
lib/pipe2.c
15
lib/pipe2.c
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@ -40,6 +40,13 @@
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int
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pipe2 (int fd[2], int flags)
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{
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/* Mingw _pipe() corrupts fd on failure; also, if we succeed at
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creating the pipe but later fail at changing fcntl, we want
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to leave fd unchanged: http://austingroupbugs.net/view.php?id=467 */
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int tmp[2];
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tmp[0] = fd[0];
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tmp[1] = fd[1];
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#if HAVE_PIPE2
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# undef pipe2
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/* Try the system call first, if it exists. (We may be running with a glibc
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@ -71,7 +78,11 @@ pipe2 (int fd[2], int flags)
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/* Native Woe32 API. */
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if (_pipe (fd, 4096, flags & ~O_NONBLOCK) < 0)
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return -1;
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{
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fd[0] = tmp[0];
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fd[1] = tmp[1];
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return -1;
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}
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/* O_NONBLOCK handling.
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On native Windows platforms, O_NONBLOCK is defined by gnulib. Use the
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@ -145,6 +156,8 @@ pipe2 (int fd[2], int flags)
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int saved_errno = errno;
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close (fd[0]);
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close (fd[1]);
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fd[0] = tmp[0];
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fd[1] = tmp[1];
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errno = saved_errno;
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return -1;
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}
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@ -38,6 +38,7 @@ orig_stat (const char *filename, struct stat *buf)
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#include <stdbool.h>
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#include <string.h>
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#include "dosname.h"
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#include "verify.h"
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/* Store information about NAME into ST. Work around bugs with
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trailing slashes. Mingw has other bugs (such as st_ino always
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@ -63,6 +64,12 @@ rpl_stat (char const *name, struct stat *st)
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}
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#endif /* REPLACE_FUNC_STAT_FILE */
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#if REPLACE_FUNC_STAT_DIR
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/* The only known systems where REPLACE_FUNC_STAT_DIR is needed also
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have a constant PATH_MAX. */
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# ifndef PATH_MAX
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# error "Please port this replacement to your platform"
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# endif
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if (result == -1 && errno == ENOENT)
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{
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/* Due to mingw's oddities, there are some directories (like
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@ -77,6 +84,7 @@ rpl_stat (char const *name, struct stat *st)
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char fixed_name[PATH_MAX + 1] = {0};
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size_t len = strlen (name);
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bool check_dir = false;
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verify (PATH_MAX <= 4096);
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if (PATH_MAX <= len)
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errno = ENAMETOOLONG;
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else if (len)
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@ -1062,6 +1062,7 @@ _GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
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specification <http://www.opengroup.org/susv3xsh/pread.html>. */
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# if @REPLACE_PREAD@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef pread
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# define pread rpl_pread
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# endif
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_GL_FUNCDECL_RPL (pread, ssize_t,
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@ -1096,6 +1097,7 @@ _GL_WARN_ON_USE (pread, "pread is unportable - "
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<http://www.opengroup.org/susv3xsh/pwrite.html>. */
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# if @REPLACE_PWRITE@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef pwrite
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# define pwrite rpl_pwrite
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# endif
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_GL_FUNCDECL_RPL (pwrite, ssize_t,
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