diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/printf_fphex.c | 128 |
1 files changed, 74 insertions, 54 deletions
diff --git a/sysdeps/ieee754/ldbl-96/printf_fphex.c b/sysdeps/ieee754/ldbl-96/printf_fphex.c index 8dfa387df5..844addd2f8 100644 --- a/sysdeps/ieee754/ldbl-96/printf_fphex.c +++ b/sysdeps/ieee754/ldbl-96/printf_fphex.c @@ -1,61 +1,81 @@ +/* Print floating point number in hexadecimal notation according to + ISO C 9X. + Copyright (C) 1997, 1998, 1999 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 + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + #ifndef LONG_DOUBLE_DENORM_BIAS # define LONG_DOUBLE_DENORM_BIAS (IEEE854_LONG_DOUBLE_BIAS - 1) #endif -#define PRINT_FPHEX_LONG_DOUBLE \ -do { \ - /* The "strange" 80 bit format on ix86 and m68k has an explicit \ - leading digit in the 64 bit mantissa. */ \ - unsigned long long int num; \ - \ - assert (sizeof (long double) == 12); \ - \ - num = (((unsigned long long int) fpnum.ldbl.ieee.mantissa0) << 32 \ - | fpnum.ldbl.ieee.mantissa1); \ - \ - zero_mantissa = num == 0; \ - \ - if (sizeof (unsigned long int) > 6) \ - numstr = _itoa_word (num, numbuf + sizeof numbuf, 16, \ - info->spec == 'A'); \ - else \ - numstr = _itoa (num, numbuf + sizeof numbuf, 16, info->spec == 'A'); \ - \ - /* Fill with zeroes. */ \ - while (numstr > numbuf + (sizeof numbuf - 64 / 4)) \ - *--numstr = '0'; \ - \ - /* We use a full nibble for the leading digit. */ \ - leading = *numstr++; \ - \ - /* 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) \ - { \ - if (zero_mantissa) \ - expnegative = 0; \ - else \ - { \ - /* This is a denormalized number. */ \ - expnegative = 1; \ - /* This is a hook for the m68k long double format, where the \ - exponent bias is the same for normalized and denormalized \ - numbers. */ \ - exponent = LONG_DOUBLE_DENORM_BIAS + 3; \ - } \ - } \ - else if (exponent >= IEEE854_LONG_DOUBLE_BIAS + 3) \ - { \ - expnegative = 0; \ - exponent -= IEEE854_LONG_DOUBLE_BIAS + 3; \ - } \ - else \ - { \ - expnegative = 1; \ - exponent = -(exponent - (IEEE854_LONG_DOUBLE_BIAS + 3)); \ - } \ +#define PRINT_FPHEX_LONG_DOUBLE \ +do { \ + /* The "strange" 80 bit format on ix86 and m68k has an explicit \ + leading digit in the 64 bit mantissa. */ \ + unsigned long long int num; \ + \ + assert (sizeof (long double) == 12); \ + \ + num = (((unsigned long long int) fpnum.ldbl.ieee.mantissa0) << 32 \ + | fpnum.ldbl.ieee.mantissa1); \ + \ + zero_mantissa = num == 0; \ + \ + if (sizeof (unsigned long int) > 6) \ + numstr = _itoa_word (num, numbuf + sizeof numbuf, 16, \ + info->spec == 'A'); \ + else \ + numstr = _itoa (num, numbuf + sizeof numbuf, 16, info->spec == 'A'); \ + \ + /* Fill with zeroes. */ \ + while (numstr > numbuf + (sizeof numbuf - 64 / 4)) \ + *--numstr = '0'; \ + \ + /* We use a full nibble for the leading digit. */ \ + leading = *numstr++; \ + \ + /* 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) \ + { \ + if (zero_mantissa) \ + expnegative = 0; \ + else \ + { \ + /* This is a denormalized number. */ \ + expnegative = 1; \ + /* This is a hook for the m68k long double format, where the \ + exponent bias is the same for normalized and denormalized \ + numbers. */ \ + exponent = LONG_DOUBLE_DENORM_BIAS + 3; \ + } \ + } \ + else if (exponent >= IEEE854_LONG_DOUBLE_BIAS + 3) \ + { \ + expnegative = 0; \ + exponent -= IEEE854_LONG_DOUBLE_BIAS + 3; \ + } \ + else \ + { \ + expnegative = 1; \ + exponent = -(exponent - (IEEE854_LONG_DOUBLE_BIAS + 3)); \ + } \ } while (0) #include <sysdeps/generic/printf_fphex.c> |