diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128/printf_fphex.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/printf_fphex.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128/printf_fphex.c b/sysdeps/ieee754/ldbl-128/printf_fphex.c new file mode 100644 index 0000000000..e25d668d9a --- /dev/null +++ b/sysdeps/ieee754/ldbl-128/printf_fphex.c @@ -0,0 +1,84 @@ +/* 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. */ + +#define PRINT_FPHEX_LONG_DOUBLE \ +do { \ + /* We have 112 bits of mantissa plus one implicit digit. Since \ + 112 bits are representable without rest using hexadecimal \ + digits we use only the implicit digits for the number before \ + the decimal point. */ \ + unsigned long long int num0, num1; \ + \ + assert (sizeof (long double) == 16); \ + \ + num0 = (((unsigned long long int) fpnum.ldbl.ieee.mantissa0) << 32 \ + | fpnum.ldbl.ieee.mantissa1); \ + num1 = (((unsigned long long int) fpnum.ldbl.ieee.mantissa2) << 32 \ + | fpnum.ldbl.ieee.mantissa3); \ + \ + zero_mantissa = (num0|num1) == 0; \ + \ + if (sizeof (unsigned long int) > 6) \ + numstr = _itoa_word (num1, numbuf + sizeof numbuf, 16, \ + info->spec == 'A'); \ + else \ + numstr = _itoa (num1, numbuf + sizeof numbuf, 16, \ + info->spec == 'A'); \ + \ + while (numstr > numbuf + (sizeof numbuf - 64 / 4)) \ + *--numstr = '0'; \ + \ + if (sizeof (unsigned long int) > 6) \ + numstr = _itoa_word (num0, numstr, 16, info->spec == 'A'); \ + else \ + numstr = _itoa (num0, numstr, 16, info->spec == 'A'); \ + \ + /* Fill with zeroes. */ \ + while (numstr > numbuf + (sizeof numbuf - 112 / 4)) \ + *--numstr = '0'; \ + \ + leading = fpnum.ldbl.ieee.exponent == 0 ? '0' : '1'; \ + \ + exponent = fpnum.ldbl.ieee.exponent; \ + \ + if (exponent == 0) \ + { \ + if (zero_mantissa) \ + expnegative = 0; \ + else \ + { \ + /* This is a denormalized number. */ \ + expnegative = 1; \ + exponent = IEEE854_LONG_DOUBLE_BIAS - 1; \ + } \ + } \ + else if (exponent >= IEEE854_LONG_DOUBLE_BIAS) \ + { \ + expnegative = 0; \ + exponent -= IEEE854_LONG_DOUBLE_BIAS; \ + } \ + else \ + { \ + expnegative = 1; \ + exponent = -(exponent - IEEE854_LONG_DOUBLE_BIAS); \ + } \ +} while (0) + +#include <sysdeps/generic/printf_fphex.c> |