forked from pool/findutils
37 lines
1.7 KiB
Diff
37 lines
1.7 KiB
Diff
|
| From: Werner Fink <werner@suse.de>
|
||
|
|
| Date: Mon, 14 Mar 2016 14:20:51 +0000
|
||
|
|
|
|
||
|
|
| Is this wrong value of LDBL_MAX still valid got gcc > 4
|
||
|
|
| Compare with
|
||
|
|
| https://lists.gnu.org/archive/html/bug-gnulib/2016-01/msg00011.html
|
||
|
|
|
|
||
|
|
---
|
||
|
|
gl/lib/float.in.h | 2 +-
|
||
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
||
|
|
|
||
|
|
--- gl/lib/float.in.h
|
||
|
|
+++ gl/lib/float.in.h 2016-03-14 14:15:45.616871084 +0000
|
||
|
|
@@ -112,21 +112,21 @@ extern const union gl_long_double_union
|
||
|
|
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__
|
||
|
|
+#if (defined _ARCH_PPC || defined _POWER) && (defined _AIX || defined __linux__) && (LDBL_MANT_DIG == 106) && (defined(__GNUC__) && (__GNUC__ == 4 && __GNUC_MINOR__ == 4))
|
||
|
|
# 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)
|