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Diffstat (limited to 'stdio-common/printf_fphex.c')
-rw-r--r--stdio-common/printf_fphex.c493
1 files changed, 0 insertions, 493 deletions
diff --git a/stdio-common/printf_fphex.c b/stdio-common/printf_fphex.c
deleted file mode 100644
index 4e30d94c61..0000000000
--- a/stdio-common/printf_fphex.c
+++ /dev/null
@@ -1,493 +0,0 @@
-/* Print floating point number in hexadecimal notation according to ISO C99.
- Copyright (C) 1997-2002,2004,2006 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)
- {
- exponent = -exponent;
- 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;
-}
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