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| author | Ulrich Drepper <drepper@redhat.com> | 2007-06-04 14:38:22 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2007-06-04 14:38:22 +0000 |
| commit | 43b768284325b7e7d2ec3fc3dcac13a35c378c95 (patch) | |
| tree | 6560de64681e4f69ea9936bed4763555004f7658 /sysdeps/ieee754/ldbl-128ibm/printf_fphex.c | |
| parent | 04067002e8c1be0c432bd608736750ca7459ec69 (diff) | |
| download | glibc-43b768284325b7e7d2ec3fc3dcac13a35c378c95.tar.gz glibc-43b768284325b7e7d2ec3fc3dcac13a35c378c95.tar.xz glibc-43b768284325b7e7d2ec3fc3dcac13a35c378c95.zip | |
* sysdeps/ieee754/ldbl-128ibm/printf_fphex.c
(PRINT_FPHEX_LONG_DOUBLE): Fix printing numbers where lower double is non-zero, but smaller than 2 * __DBL_MIN__. * stdio-common/tst-sprintf2.c: New test. * stdio-common/Makefile (tests): Add tst-sprintf2. * math/test-misc.c (main): Don't run last batch of tests with IBM long double format.
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/printf_fphex.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/printf_fphex.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/printf_fphex.c b/sysdeps/ieee754/ldbl-128ibm/printf_fphex.c index 2a7b70fabf..b2ad25e31f 100644 --- a/sysdeps/ieee754/ldbl-128ibm/printf_fphex.c +++ b/sysdeps/ieee754/ldbl-128ibm/printf_fphex.c @@ -1,5 +1,5 @@ /* Print floating point number in hexadecimal notation according to ISO C99. - Copyright (C) 1997,1998,1999,2000,2001,2002,2004,2006 + Copyright (C) 1997,1998,1999,2000,2001,2002,2004,2006,2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -35,21 +35,24 @@ do { \ \ lo = ((long long)eldbl.ieee.mantissa2 << 32) | eldbl.ieee.mantissa3; \ hi = ((long long)eldbl.ieee.mantissa0 << 32) | eldbl.ieee.mantissa1; \ - /* If the lower double is not a denomal or zero then set the hidden \ - 53rd bit. */ \ - if (eldbl.ieee.exponent2 > 0x001) \ - { \ - lo |= (1ULL << 52); \ - lo = lo << 7; /* pre-shift lo to match ieee854. */ \ - /* The lower double is normalized separately from the upper. We \ - may need to adjust the lower manitissa to reflect this. */ \ - ediff = eldbl.ieee.exponent - eldbl.ieee.exponent2; \ - if (ediff > 53) \ - lo = lo >> (ediff-53); \ - } \ - \ - if ((eldbl.ieee.negative != eldbl.ieee.negative2) \ - && ((eldbl.ieee.exponent2 != 0) && (lo != 0L))) \ + lo <<= 7; /* pre-shift lo to match ieee854. */ \ + /* If the lower double is not a denomal or zero then set the hidden \ + 53rd bit. */ \ + if (eldbl.ieee.exponent2 != 0) \ + lo |= (1ULL << (52 + 7)); \ + else \ + lo <<= 1; \ + /* The lower double is normalized separately from the upper. We \ + may need to adjust the lower manitissa to reflect this. */ \ + ediff = eldbl.ieee.exponent - eldbl.ieee.exponent2; \ + if (ediff > 53 + 63) \ + lo = 0; \ + else if (ediff > 53) \ + lo = lo >> (ediff - 53); \ + else if (eldbl.ieee.exponent2 == 0 && ediff < 53) \ + lo = lo << (53 - ediff); \ + if (eldbl.ieee.negative != eldbl.ieee.negative2 \ + && (eldbl.ieee.exponent2 != 0 || lo != 0L)) \ { \ lo = (1ULL << 60) - lo; \ if (hi == 0L) \ |