| /* Print floating point number in hexadecimal notation according to ISO C99. |
| Copyright (C) 1997-2018 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 Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #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; \ |
| union ieee854_long_double u; \ |
| u.d = fpnum.ldbl; \ |
| \ |
| num = (((unsigned long long int) u.ieee.mantissa0) << 32 \ |
| | u.ieee.mantissa1); \ |
| \ |
| zero_mantissa = num == 0; \ |
| \ |
| if (sizeof (unsigned long int) > 6) \ |
| { \ |
| numstr = _itoa_word (num, numbuf + sizeof numbuf, 16, \ |
| info->spec == 'A'); \ |
| wnumstr = _itowa_word (num, \ |
| wnumbuf + sizeof (wnumbuf) / sizeof (wchar_t),\ |
| 16, info->spec == 'A'); \ |
| } \ |
| else \ |
| { \ |
| numstr = _itoa (num, numbuf + sizeof numbuf, 16, info->spec == 'A');\ |
| wnumstr = _itowa (num, \ |
| wnumbuf + sizeof (wnumbuf) / sizeof (wchar_t), \ |
| 16, info->spec == 'A'); \ |
| } \ |
| \ |
| /* Fill with zeroes. */ \ |
| while (numstr > numbuf + (sizeof numbuf - 64 / 4)) \ |
| { \ |
| *--numstr = '0'; \ |
| *--wnumstr = L'0'; \ |
| } \ |
| \ |
| /* We use a full nibble for the leading digit. */ \ |
| leading = *numstr++; \ |
| wnumstr++; \ |
| \ |
| /* We have 3 bits from the mantissa in the leading nibble. \ |
| Therefore we are here using `IEEE854_LONG_DOUBLE_BIAS + 3'. */ \ |
| exponent = u.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 <stdio-common/printf_fphex.c> |