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| author | Ulrich Drepper <drepper@redhat.com> | 1998-11-17 18:36:05 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1998-11-17 18:36:05 +0000 |
| commit | d8cceb4fcf42c9dd7805b75a8640e15d00dd7ac9 (patch) | |
| tree | 2509bdf2a3563d5cddb03fb92b97c1dedee40ad2 /stdio-common/printf_fphex.c | |
| parent | cae8899646b7acc7e5b27c14624a027f5240787f (diff) | |
| download | glibc-d8cceb4fcf42c9dd7805b75a8640e15d00dd7ac9.tar.gz glibc-d8cceb4fcf42c9dd7805b75a8640e15d00dd7ac9.tar.xz glibc-d8cceb4fcf42c9dd7805b75a8640e15d00dd7ac9.zip | |
Update.
1998-11-17 Ulrich Drepper <drepper@cygnus.com> * stdio-common/printf_fphex.c (__printf_fphex): Correct printing of denormalized numbers. 1998-10-06 Geoff Keating <geoffk@ozemail.com.au> * sysdeps/powerpc/dl-machine.h (elf_machine_load_address): Suppress another parentheses warning, make nano-optimisation. * sysdeps/powerpc/dl-machine.h (_dl_runtime_resolve): Preserve saved LR on stack so _mcount works. (_dl_prof_resolve): Likewise. * sysdeps/powerpc/register-dump.h: Print FPRs. Adjust for correct signal handler calling convention. * sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h: Adjust for correct signal handler calling convention---more like x86 linux and mklinux, less like linux-ppc versions between 2.1 and 2.1.126. 1998-11-17 Ulrich Drepper <drepper@cygnus.com> * configure.in: Correct allowed makeinfo version. 1998-11-17 Philip Blundell <pb@nexus.co.uk> * sysdeps/generic/bits/mathdef.h: Fix typo. * intl/locale.alias: Change `japanese' alias to match X11R6's.
Diffstat (limited to 'stdio-common/printf_fphex.c')
| -rw-r--r-- | stdio-common/printf_fphex.c | 50 |
1 files changed, 35 insertions, 15 deletions
diff --git a/stdio-common/printf_fphex.c b/stdio-common/printf_fphex.c index 76084a8de5..4099bf2dd1 100644 --- a/stdio-common/printf_fphex.c +++ b/stdio-common/printf_fphex.c @@ -1,6 +1,6 @@ /* Print floating point number in hexadecimal notation according to ISO C 9X. - Copyright (C) 1997 Free Software Foundation, Inc. + Copyright (C) 1997, 1998 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -244,16 +244,26 @@ __printf_fphex (FILE *fp, exponent = fpnum.dbl.ieee.exponent; - if (exponent == 0 ? !zero_mantissa : exponent < IEEE754_DOUBLE_BIAS) + if (exponent == 0) { - expnegative = 1; - exponent = -(exponent - IEEE754_DOUBLE_BIAS); + if (zero_mantissa) + expnegative = 0; + else + { + /* This is a denormalized number. */ + expnegative = 1; + exponent = -(1 - IEEE754_DOUBLE_BIAS); + } } - else + else if (exponent >= IEEE754_DOUBLE_BIAS) { expnegative = 0; - if (exponent != 0) - exponent -= IEEE754_DOUBLE_BIAS; + exponent -= IEEE754_DOUBLE_BIAS; + } + else + { + expnegative = 1; + exponent = -(exponent - IEEE754_DOUBLE_BIAS); } } else @@ -282,20 +292,30 @@ __printf_fphex (FILE *fp, /* We use a full nibble for the leading digit. */ leading = *numstr++; - /* We have 3 bits from the mantissa in the leading nibble. */ + /* We have 3 bits from the mantissa in the leading nibble. + Therefore we are here using `IEEE854_LONG_DOUBLE_BIAS + 3'. */ exponent = fpnum.ldbl.ieee.exponent; - if (exponent == 0 ? !zero_mantissa - : exponent < IEEE854_LONG_DOUBLE_BIAS + 3) + if (exponent == 0) { - expnegative = 1; - exponent = -(exponent - (IEEE854_LONG_DOUBLE_BIAS + 3)); + if (zero_mantissa) + expnegative = 0; + else + { + /* This is a denormalized number. */ + expnegative = 1; + exponent = -(1 - (IEEE854_LONG_DOUBLE_BIAS + 3)); + } } - else + else if (exponent >= IEEE854_LONG_DOUBLE_BIAS + 3) { expnegative = 0; - if (exponent != 0) - exponent -= IEEE854_LONG_DOUBLE_BIAS + 3; + exponent -= IEEE854_LONG_DOUBLE_BIAS + 2; + } + else + { + expnegative = 1; + exponent = -(exponent - (IEEE854_LONG_DOUBLE_BIAS + 3)); } } |