diff options
Diffstat (limited to 'sysdeps/generic/printf_fphex.c')
| -rw-r--r-- | sysdeps/generic/printf_fphex.c | 490 |
1 files changed, 0 insertions, 490 deletions
diff --git a/sysdeps/generic/printf_fphex.c b/sysdeps/generic/printf_fphex.c deleted file mode 100644 index fd790d5bf3..0000000000 --- a/sysdeps/generic/printf_fphex.c +++ /dev/null @@ -1,490 +0,0 @@ -/* Print floating point number in hexadecimal notation according to ISO C99. - Copyright (C) 1997-2002,2004 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. - - 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <ctype.h> -#include <ieee754.h> -#include <math.h> -#include <printf.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <wchar.h> -#include "_itoa.h" -#include "_itowa.h" -#include <locale/localeinfo.h> - -/* #define NDEBUG 1*/ /* Undefine this for debugging assertions. */ -#include <assert.h> - -/* This defines make it possible to use the same code for GNU C library and - the GNU I/O library. */ -#ifdef USE_IN_LIBIO -# include <libioP.h> -# define PUT(f, s, n) _IO_sputn (f, s, n) -# define PAD(f, c, n) (wide ? _IO_wpadn (f, c, n) : INTUSE(_IO_padn) (f, c, n)) -/* We use this file GNU C library and GNU I/O library. So make - names equal. */ -# undef putc -# define putc(c, f) (wide \ - ? (int)_IO_putwc_unlocked (c, f) : _IO_putc_unlocked (c, f)) -# define size_t _IO_size_t -# define FILE _IO_FILE -#else /* ! USE_IN_LIBIO */ -# define PUT(f, s, n) fwrite (s, 1, n, f) -# define PAD(f, c, n) __printf_pad (f, c, n) -ssize_t __printf_pad (FILE *, char pad, int n) __THROW; /* In vfprintf.c. */ -#endif /* USE_IN_LIBIO */ - -/* Macros for doing the actual output. */ - -#define outchar(ch) \ - do \ - { \ - register const int outc = (ch); \ - if (putc (outc, fp) == EOF) \ - return -1; \ - ++done; \ - } while (0) - -#define PRINT(ptr, wptr, len) \ - do \ - { \ - register size_t outlen = (len); \ - if (wide) \ - while (outlen-- > 0) \ - outchar (*wptr++); \ - else \ - while (outlen-- > 0) \ - outchar (*ptr++); \ - } while (0) - -#define PADN(ch, len) \ - do \ - { \ - if (PAD (fp, ch, len) != len) \ - return -1; \ - done += len; \ - } \ - while (0) - -#ifndef MIN -# define MIN(a,b) ((a)<(b)?(a):(b)) -#endif - - -int -__printf_fphex (FILE *fp, - const struct printf_info *info, - const void *const *args) -{ - /* The floating-point value to output. */ - union - { - union ieee754_double dbl; - union ieee854_long_double ldbl; - } - fpnum; - - /* Locale-dependent representation of decimal point. */ - const char *decimal; - wchar_t decimalwc; - - /* "NaN" or "Inf" for the special cases. */ - const char *special = NULL; - const wchar_t *wspecial = NULL; - - /* Buffer for the generated number string for the mantissa. The - maximal size for the mantissa is 128 bits. */ - char numbuf[32]; - char *numstr; - char *numend; - wchar_t wnumbuf[32]; - wchar_t *wnumstr; - wchar_t *wnumend; - int negative; - - /* The maximal exponent of two in decimal notation has 5 digits. */ - char expbuf[5]; - char *expstr; - wchar_t wexpbuf[5]; - wchar_t *wexpstr; - int expnegative; - int exponent; - - /* Non-zero is mantissa is zero. */ - int zero_mantissa; - - /* The leading digit before the decimal point. */ - char leading; - - /* Precision. */ - int precision = info->prec; - - /* Width. */ - int width = info->width; - - /* Number of characters written. */ - int done = 0; - - /* Nonzero if this is output on a wide character stream. */ - int wide = info->wide; - - - /* Figure out the decimal point character. */ - if (info->extra == 0) - { - decimal = _NL_CURRENT (LC_NUMERIC, DECIMAL_POINT); - decimalwc = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_DECIMAL_POINT_WC); - } - else - { - decimal = _NL_CURRENT (LC_MONETARY, MON_DECIMAL_POINT); - decimalwc = _NL_CURRENT_WORD (LC_MONETARY, - _NL_MONETARY_DECIMAL_POINT_WC); - } - /* The decimal point character must never be zero. */ - assert (*decimal != '\0' && decimalwc != L'\0'); - - - /* Fetch the argument value. */ -#ifndef __NO_LONG_DOUBLE_MATH - if (info->is_long_double && sizeof (long double) > sizeof (double)) - { - fpnum.ldbl.d = *(const long double *) args[0]; - - /* Check for special values: not a number or infinity. */ - if (__isnanl (fpnum.ldbl.d)) - { - if (isupper (info->spec)) - { - special = "NAN"; - wspecial = L"NAN"; - } - else - { - special = "nan"; - wspecial = L"nan"; - } - negative = 0; - } - else - { - if (__isinfl (fpnum.ldbl.d)) - { - if (isupper (info->spec)) - { - special = "INF"; - wspecial = L"INF"; - } - else - { - special = "inf"; - wspecial = L"inf"; - } - } - - negative = signbit (fpnum.ldbl.d); - } - } - else -#endif /* no long double */ - { - fpnum.dbl.d = *(const double *) args[0]; - - /* Check for special values: not a number or infinity. */ - if (__isnan (fpnum.dbl.d)) - { - if (isupper (info->spec)) - { - special = "NAN"; - wspecial = L"NAN"; - } - else - { - special = "nan"; - wspecial = L"nan"; - } - negative = 0; - } - else - { - if (__isinf (fpnum.dbl.d)) - { - if (isupper (info->spec)) - { - special = "INF"; - wspecial = L"INF"; - } - else - { - special = "inf"; - wspecial = L"inf"; - } - } - - negative = signbit (fpnum.dbl.d); - } - } - - if (special) - { - int width = info->width; - - if (negative || info->showsign || info->space) - --width; - width -= 3; - - if (!info->left && width > 0) - PADN (' ', width); - - if (negative) - outchar ('-'); - else if (info->showsign) - outchar ('+'); - else if (info->space) - outchar (' '); - - PRINT (special, wspecial, 3); - - if (info->left && width > 0) - PADN (' ', width); - - return done; - } - - if (info->is_long_double == 0 || sizeof (double) == sizeof (long double)) - { - /* We have 52 bits of mantissa plus one implicit digit. Since - 52 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 num; - - num = (((unsigned long long int) fpnum.dbl.ieee.mantissa0) << 32 - | fpnum.dbl.ieee.mantissa1); - - zero_mantissa = num == 0; - - if (sizeof (unsigned long int) > 6) - { - wnumstr = _itowa_word (num, wnumbuf + (sizeof wnumbuf) / sizeof (wchar_t), 16, - info->spec == 'A'); - numstr = _itoa_word (num, numbuf + sizeof numbuf, 16, - info->spec == 'A'); - } - else - { - wnumstr = _itowa (num, wnumbuf + sizeof wnumbuf / sizeof (wchar_t), 16, - info->spec == 'A'); - numstr = _itoa (num, numbuf + sizeof numbuf, 16, - info->spec == 'A'); - } - - /* Fill with zeroes. */ - while (wnumstr > wnumbuf + (sizeof wnumbuf - 52) / sizeof (wchar_t)) - { - *--wnumstr = L'0'; - *--numstr = '0'; - } - - leading = fpnum.dbl.ieee.exponent == 0 ? '0' : '1'; - - exponent = fpnum.dbl.ieee.exponent; - - if (exponent == 0) - { - if (zero_mantissa) - expnegative = 0; - else - { - /* This is a denormalized number. */ - expnegative = 1; - exponent = IEEE754_DOUBLE_BIAS - 1; - } - } - else if (exponent >= IEEE754_DOUBLE_BIAS) - { - expnegative = 0; - exponent -= IEEE754_DOUBLE_BIAS; - } - else - { - expnegative = 1; - exponent = -(exponent - IEEE754_DOUBLE_BIAS); - } - } -#ifdef PRINT_FPHEX_LONG_DOUBLE - else - PRINT_FPHEX_LONG_DOUBLE; -#endif - - /* Look for trailing zeroes. */ - if (! zero_mantissa) - { - wnumend = &wnumbuf[sizeof wnumbuf / sizeof wnumbuf[0]]; - numend = &numbuf[sizeof numbuf / sizeof numbuf[0]]; - while (wnumend[-1] == L'0') - { - --wnumend; - --numend; - } - - if (precision == -1) - precision = numend - numstr; - else if (precision < numend - numstr - && (numstr[precision] > '8' - || (('A' < '0' || 'a' < '0') - && numstr[precision] < '0') - || (numstr[precision] == '8' - && (precision + 1 < numend - numstr - /* Round to even. */ - || (precision > 0 - && ((numstr[precision - 1] & 1) - ^ (isdigit (numstr[precision - 1]) == 0))) - || (precision == 0 - && ((leading & 1) - ^ (isdigit (leading) == 0))))))) - { - /* Round up. */ - int cnt = precision; - while (--cnt >= 0) - { - char ch = numstr[cnt]; - /* We assume that the digits and the letters are ordered - like in ASCII. This is true for the rest of GNU, too. */ - if (ch == '9') - { - wnumstr[cnt] = (wchar_t) info->spec; - numstr[cnt] = info->spec; /* This is tricky, - think about it! */ - break; - } - else if (tolower (ch) < 'f') - { - ++numstr[cnt]; - ++wnumstr[cnt]; - break; - } - else - { - numstr[cnt] = '0'; - wnumstr[cnt] = L'0'; - } - } - if (cnt < 0) - { - /* The mantissa so far was fff...f Now increment the - leading digit. Here it is again possible that we - get an overflow. */ - if (leading == '9') - leading = info->spec; - else if (tolower (leading) < 'f') - ++leading; - else - { - leading = 1; - if (expnegative) - { - exponent += 4; - if (exponent >= 0) - expnegative = 0; - } - else - exponent += 4; - } - } - } - } - else - { - if (precision == -1) - precision = 0; - numend = numstr; - wnumend = wnumstr; - } - - /* Now we can compute the exponent string. */ - expstr = _itoa_word (exponent, expbuf + sizeof expbuf, 10, 0); - wexpstr = _itowa_word (exponent, - wexpbuf + sizeof wexpbuf / sizeof (wchar_t), 10, 0); - - /* Now we have all information to compute the size. */ - width -= ((negative || info->showsign || info->space) - /* Sign. */ - + 2 + 1 + 0 + precision + 1 + 1 - /* 0x h . hhh P ExpoSign. */ - + ((expbuf + sizeof expbuf) - expstr)); - /* Exponent. */ - - /* Count the decimal point. - A special case when the mantissa or the precision is zero and the `#' - is not given. In this case we must not print the decimal point. */ - if (precision > 0 || info->alt) - width -= wide ? 1 : strlen (decimal); - - if (!info->left && info->pad != '0' && width > 0) - PADN (' ', width); - - if (negative) - outchar ('-'); - else if (info->showsign) - outchar ('+'); - else if (info->space) - outchar (' '); - - outchar ('0'); - if ('X' - 'A' == 'x' - 'a') - outchar (info->spec + ('x' - 'a')); - else - outchar (info->spec == 'A' ? 'X' : 'x'); - - if (!info->left && info->pad == '0' && width > 0) - PADN ('0', width); - - outchar (leading); - - if (precision > 0 || info->alt) - { - const wchar_t *wtmp = &decimalwc; - PRINT (decimal, wtmp, wide ? 1 : strlen (decimal)); - } - - if (precision > 0) - { - ssize_t tofill = precision - (numend - numstr); - PRINT (numstr, wnumstr, MIN (numend - numstr, precision)); - if (tofill > 0) - PADN ('0', tofill); - } - - if ('P' - 'A' == 'p' - 'a') - outchar (info->spec + ('p' - 'a')); - else - outchar (info->spec == 'A' ? 'P' : 'p'); - - outchar (expnegative ? '-' : '+'); - - PRINT (expstr, wexpstr, (expbuf + sizeof expbuf) - expstr); - - if (info->left && info->pad != '0' && width > 0) - PADN (info->pad, width); - - return done; -} |