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-rw-r--r--lib/float.in.h138
1 files changed, 6 insertions, 132 deletions
diff --git a/lib/float.in.h b/lib/float.in.h
index dab2a2b..ad99af3 100644
--- a/lib/float.in.h
+++ b/lib/float.in.h
@@ -1,6 +1,6 @@
/* A correct <float.h>.
- Copyright (C) 2007-2015 Free Software Foundation, Inc.
+ Copyright (C) 2007-2010 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
@@ -15,21 +15,19 @@
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#ifndef _@GUARD_PREFIX@_FLOAT_H
+#ifndef _GL_FLOAT_H
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
-@PRAGMA_COLUMNS@
/* The include_next requires a split double-inclusion guard. */
#@INCLUDE_NEXT@ @NEXT_FLOAT_H@
-#ifndef _@GUARD_PREFIX@_FLOAT_H
-#define _@GUARD_PREFIX@_FLOAT_H
+#ifndef _GL_FLOAT_H
+#define _GL_FLOAT_H
/* 'long double' properties. */
-
#if defined __i386__ && (defined __BEOS__ || defined __OpenBSD__)
/* Number of mantissa units, in base FLT_RADIX. */
# undef LDBL_MANT_DIG
@@ -60,129 +58,5 @@
# define LDBL_MAX_10_EXP 4932
#endif
-/* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
- precision in the compiler but 64 bits of precision at runtime. See
- <http://lists.gnu.org/archive/html/bug-gnulib/2008-07/msg00063.html>. */
-#if defined __i386__ && defined __FreeBSD__
-/* Number of mantissa units, in base FLT_RADIX. */
-# undef LDBL_MANT_DIG
-# define LDBL_MANT_DIG 64
-/* Number of decimal digits that is sufficient for representing a number. */
-# undef LDBL_DIG
-# define LDBL_DIG 18
-/* x-1 where x is the smallest representable number > 1. */
-# undef LDBL_EPSILON
-# define LDBL_EPSILON 1.084202172485504434007452800869941711426e-19L /* 2^-63 */
-/* Minimum e such that FLT_RADIX^(e-1) is a normalized number. */
-# undef LDBL_MIN_EXP
-# define LDBL_MIN_EXP (-16381)
-/* Maximum e such that FLT_RADIX^(e-1) is a representable finite number. */
-# undef LDBL_MAX_EXP
-# define LDBL_MAX_EXP 16384
-/* Minimum positive normalized number. */
-# undef LDBL_MIN
-# define LDBL_MIN 3.3621031431120935E-4932L /* = 0x1p-16382L */
-/* Maximum representable finite number. */
-# undef LDBL_MAX
-/* LDBL_MAX is represented as { 0xFFFFFFFF, 0xFFFFFFFF, 32766 }.
- But the largest literal that GCC allows us to write is
- 0x0.fffffffffffff8p16384L = { 0xFFFFF800, 0xFFFFFFFF, 32766 }.
- So, define it like this through a reference to an external variable
-
- const unsigned int LDBL_MAX[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 32766 };
- extern const long double LDBL_MAX;
-
- Unfortunately, this is not a constant expression. */
-union gl_long_double_union
- {
- struct { unsigned int lo; unsigned int hi; unsigned int exponent; } xd;
- long double ld;
- };
-extern const union gl_long_double_union gl_LDBL_MAX;
-# define LDBL_MAX (gl_LDBL_MAX.ld)
-/* Minimum e such that 10^e is in the range of normalized numbers. */
-# undef LDBL_MIN_10_EXP
-# define LDBL_MIN_10_EXP (-4931)
-/* Maximum e such that 10^e is in the range of representable finite numbers. */
-# undef LDBL_MAX_10_EXP
-# define LDBL_MAX_10_EXP 4932
-#endif
-
-/* On AIX 7.1 with gcc 4.2, the values of LDBL_MIN_EXP, LDBL_MIN, LDBL_MAX are
- wrong.
- On Linux/PowerPC with gcc 4.4, the value of LDBL_MAX is wrong. */
-#if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__
-# undef LDBL_MIN_EXP
-# define LDBL_MIN_EXP DBL_MIN_EXP
-# undef LDBL_MIN_10_EXP
-# define LDBL_MIN_10_EXP DBL_MIN_10_EXP
-# undef LDBL_MIN
-# define LDBL_MIN 2.22507385850720138309023271733240406422e-308L /* DBL_MIN = 2^-1022 */
-#endif
-#if (defined _ARCH_PPC || defined _POWER) && (defined _AIX || defined __linux__) && (LDBL_MANT_DIG == 106) && defined __GNUC__
-# undef LDBL_MAX
-/* LDBL_MAX is represented as { 0x7FEFFFFF, 0xFFFFFFFF, 0x7C8FFFFF, 0xFFFFFFFF }.
- It is not easy to define:
- #define LDBL_MAX 1.79769313486231580793728971405302307166e308L
- is too small, whereas
- #define LDBL_MAX 1.79769313486231580793728971405302307167e308L
- is too large. Apparently a bug in GCC decimal-to-binary conversion.
- Also, I can't get values larger than
- #define LDBL63 ((long double) (1ULL << 63))
- #define LDBL882 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
- #define LDBL945 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
- #define LDBL1008 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
- #define LDBL_MAX (LDBL1008 * 65535.0L + LDBL945 * (long double) 9223372036821221375ULL + LDBL882 * (long double) 4611686018427387904ULL)
- which is represented as { 0x7FEFFFFF, 0xFFFFFFFF, 0x7C8FFFFF, 0xF8000000 }.
- So, define it like this through a reference to an external variable
-
- const double LDBL_MAX[2] = { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL };
- extern const long double LDBL_MAX;
-
- or through a pointer cast
-
- #define LDBL_MAX \
- (*(const long double *) (double[]) { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL })
-
- Unfortunately, this is not a constant expression, and the latter expression
- does not work well when GCC is optimizing.. */
-union gl_long_double_union
- {
- struct { double hi; double lo; } dd;
- long double ld;
- };
-extern const union gl_long_double_union gl_LDBL_MAX;
-# define LDBL_MAX (gl_LDBL_MAX.ld)
-#endif
-
-/* On IRIX 6.5, with cc, the value of LDBL_MANT_DIG is wrong.
- On IRIX 6.5, with gcc 4.2, the values of LDBL_MIN_EXP, LDBL_MIN, LDBL_EPSILON
- are wrong. */
-#if defined __sgi && (LDBL_MANT_DIG >= 106)
-# undef LDBL_MANT_DIG
-# define LDBL_MANT_DIG 106
-# if defined __GNUC__
-# undef LDBL_MIN_EXP
-# define LDBL_MIN_EXP DBL_MIN_EXP
-# undef LDBL_MIN_10_EXP
-# define LDBL_MIN_10_EXP DBL_MIN_10_EXP
-# undef LDBL_MIN
-# define LDBL_MIN 2.22507385850720138309023271733240406422e-308L /* DBL_MIN = 2^-1022 */
-# undef LDBL_EPSILON
-# define LDBL_EPSILON 2.46519032881566189191165176650870696773e-32L /* 2^-105 */
-# endif
-#endif
-
-#if @REPLACE_ITOLD@
-/* Pull in a function that fixes the 'int' to 'long double' conversion
- of glibc 2.7. */
-extern
-# ifdef __cplusplus
-"C"
-# endif
-void _Qp_itoq (long double *, int);
-static void (*_gl_float_fix_itold) (long double *, int) = _Qp_itoq;
-#endif
-
-#endif /* _@GUARD_PREFIX@_FLOAT_H */
-#endif /* _@GUARD_PREFIX@_FLOAT_H */
+#endif /* _GL_FLOAT_H */
+#endif /* _GL_FLOAT_H */