diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/i386/ldbl2mpn.c | 17 |
2 files changed, 19 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog index a7f4ba4edd..92809c5cc5 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2000-12-03 Ulrich Drepper <drepper@redhat.com> + * sysdeps/i386/ldbl2mpn.c (__mpn_extract_long_double): Handle the + pseudo denormal representation of LDBL_MIN. + * iconvdata/SJIS.irreversible: Remove unnecessary entries. * iconvdata/EUC-JP.irreversible: Remove unnecessary entries. @@ -45,7 +48,7 @@ 2000-12-01 Ulrich Drepper <drepper@redhat.com> - * configure.in: Correct test for pserver CVS access.cc + * configure.in: Correct test for pserver CVS access. 2000-11-28 H.J. Lu <hjl@gnu.org> diff --git a/sysdeps/i386/ldbl2mpn.c b/sysdeps/i386/ldbl2mpn.c index 631fe2eab4..386cf198e2 100644 --- a/sysdeps/i386/ldbl2mpn.c +++ b/sysdeps/i386/ldbl2mpn.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. +/* Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -87,13 +87,26 @@ __mpn_extract_long_double (mp_ptr res_ptr, mp_size_t size, } *expt = LDBL_MIN_EXP - 1 - cnt; } - else + else if (res_ptr[0] != 0) { count_leading_zeros (cnt, res_ptr[0]); res_ptr[N - 1] = res_ptr[0] << cnt; res_ptr[0] = 0; *expt = LDBL_MIN_EXP - 1 - BITS_PER_MP_LIMB - cnt; } + else + { + /* This is the special case of the pseudo denormal number + with only the implicit leading bit set. The value is + in fact a normal number and so we have to treat this + case differently. */ +#if N == 2 + res_ptr[N - 1] = 0x80000000ul; +#else + res_ptr[0] = 0x8000000000000000ul; +#endif + *expt = LDBL_MIN_EXP - 1; + } } } |