2016-03-14 15:25:00 +01:00
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| From: Werner Fink <werner@suse.de>
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| Date: Mon, 14 Mar 2016 14:20:51 +0000
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| Is this wrong value of LDBL_MAX still valid got gcc > 4
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| Compare with
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| https://lists.gnu.org/archive/html/bug-gnulib/2016-01/msg00011.html
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---
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2016-03-14 15:30:00 +01:00
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gl/lib/float.c | 2 +-
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2016-03-14 15:25:00 +01:00
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gl/lib/float.in.h | 2 +-
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2016-03-14 15:30:00 +01:00
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2 files changed, 2 insertions(+), 2 deletions(-)
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2016-03-14 15:25:00 +01:00
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2016-03-14 15:30:00 +01:00
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--- gl/lib/float.c
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+++ gl/lib/float.c 2016-03-14 14:29:38.001448470 +0000
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@@ -13,21 +13,21 @@
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GNU General Public License for more details.
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You should have received a copy of the GNU 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 || defined __linux__) && (LDBL_MANT_DIG == 106) && defined __GNUC__
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+#if (defined _ARCH_PPC || defined _POWER) && (defined _AIX || defined __linux__) && (LDBL_MANT_DIG == 106) && (defined(__GNUC__) && (__GNUC__ == 4 && __GNUC_MINOR__ == 4))
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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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2016-03-14 15:25:00 +01:00
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--- gl/lib/float.in.h
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+++ gl/lib/float.in.h 2016-03-14 14:15:45.616871084 +0000
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@@ -112,21 +112,21 @@ extern const union gl_long_double_union
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wrong.
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On Linux/PowerPC with gcc 4.4, the value of LDBL_MAX is 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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#endif
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-#if (defined _ARCH_PPC || defined _POWER) && (defined _AIX || defined __linux__) && (LDBL_MANT_DIG == 106) && defined __GNUC__
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+#if (defined _ARCH_PPC || defined _POWER) && (defined _AIX || defined __linux__) && (LDBL_MANT_DIG == 106) && (defined(__GNUC__) && (__GNUC__ == 4 && __GNUC_MINOR__ == 4))
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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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