vasnprintf.c

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			  DCHAR_SET (result + length, ' ', n);
			  length += n;
			}
		    }
		    break;

		  default:
		    abort ();
		  }
	      }
#endif
#if (NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE) && !defined IN_LIBINTL
	    else if ((dp->conversion == 'a' || dp->conversion == 'A')
# if !(NEED_PRINTF_DIRECTIVE_A || (NEED_PRINTF_LONG_DOUBLE && NEED_PRINTF_DOUBLE))
		     && (0
#  if NEED_PRINTF_DOUBLE
			 || a.arg[dp->arg_index].type == TYPE_DOUBLE
#  endif
#  if NEED_PRINTF_LONG_DOUBLE
			 || a.arg[dp->arg_index].type == TYPE_LONGDOUBLE
#  endif
			)
# endif
		    )
	      {
		arg_type type = a.arg[dp->arg_index].type;
		int flags = dp->flags;
		int has_width;
		size_t width;
		int has_precision;
		size_t precision;
		size_t tmp_length;
		DCHAR_T tmpbuf[700];
		DCHAR_T *tmp;
		DCHAR_T *pad_ptr;
		DCHAR_T *p;

		has_width = 0;
		width = 0;
		if (dp->width_start != dp->width_end)
		  {
		    if (dp->width_arg_index != ARG_NONE)
		      {
			int arg;

			if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
			  abort ();
			arg = a.arg[dp->width_arg_index].a.a_int;
			if (arg < 0)
			  {
			    /* "A negative field width is taken as a '-' flag
			        followed by a positive field width."  */
			    flags |= FLAG_LEFT;
			    width = (unsigned int) (-arg);
			  }
			else
			  width = arg;
		      }
		    else
		      {
			const FCHAR_T *digitp = dp->width_start;

			do
			  width = xsum (xtimes (width, 10), *digitp++ - '0');
			while (digitp != dp->width_end);
		      }
		    has_width = 1;
		  }

		has_precision = 0;
		precision = 0;
		if (dp->precision_start != dp->precision_end)
		  {
		    if (dp->precision_arg_index != ARG_NONE)
		      {
			int arg;

			if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
			  abort ();
			arg = a.arg[dp->precision_arg_index].a.a_int;
			/* "A negative precision is taken as if the precision
			    were omitted."  */
			if (arg >= 0)
			  {
			    precision = arg;
			    has_precision = 1;
			  }
		      }
		    else
		      {
			const FCHAR_T *digitp = dp->precision_start + 1;

			precision = 0;
			while (digitp != dp->precision_end)
			  precision = xsum (xtimes (precision, 10), *digitp++ - '0');
			has_precision = 1;
		      }
		  }

		/* Allocate a temporary buffer of sufficient size.  */
		if (type == TYPE_LONGDOUBLE)
		  tmp_length =
		    (unsigned int) ((LDBL_DIG + 1)
				    * 0.831 /* decimal -> hexadecimal */
				   )
		    + 1; /* turn floor into ceil */
		else
		  tmp_length =
		    (unsigned int) ((DBL_DIG + 1)
				    * 0.831 /* decimal -> hexadecimal */
				   )
		    + 1; /* turn floor into ceil */
		if (tmp_length < precision)
		  tmp_length = precision;
		/* Account for sign, decimal point etc. */
		tmp_length = xsum (tmp_length, 12);

		if (tmp_length < width)
		  tmp_length = width;

		tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */

		if (tmp_length <= sizeof (tmpbuf) / sizeof (DCHAR_T))
		  tmp = tmpbuf;
		else
		  {
		    size_t tmp_memsize = xtimes (tmp_length, sizeof (DCHAR_T));

		    if (size_overflow_p (tmp_memsize))
		      /* Overflow, would lead to out of memory.  */
		      goto out_of_memory;
		    tmp = (DCHAR_T *) malloc (tmp_memsize);
		    if (tmp == NULL)
		      /* Out of memory.  */
		      goto out_of_memory;
		  }

		pad_ptr = NULL;
		p = tmp;
		if (type == TYPE_LONGDOUBLE)
		  {
# if NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_LONG_DOUBLE
		    long double arg = a.arg[dp->arg_index].a.a_longdouble;

		    if (isnanl (arg))
		      {
			if (dp->conversion == 'A')
			  {
			    *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
			  }
			else
			  {
			    *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
			  }
		      }
		    else
		      {
			int sign = 0;
			DECL_LONG_DOUBLE_ROUNDING

			BEGIN_LONG_DOUBLE_ROUNDING ();

			if (signbit (arg)) /* arg < 0.0L or negative zero */
			  {
			    sign = -1;
			    arg = -arg;
			  }

			if (sign < 0)
			  *p++ = '-';
			else if (flags & FLAG_SHOWSIGN)
			  *p++ = '+';
			else if (flags & FLAG_SPACE)
			  *p++ = ' ';

			if (arg > 0.0L && arg + arg == arg)
			  {
			    if (dp->conversion == 'A')
			      {
				*p++ = 'I'; *p++ = 'N'; *p++ = 'F';
			      }
			    else
			      {
				*p++ = 'i'; *p++ = 'n'; *p++ = 'f';
			      }
			  }
			else
			  {
			    int exponent;
			    long double mantissa;

			    if (arg > 0.0L)
			      mantissa = printf_frexpl (arg, &exponent);
			    else
			      {
				exponent = 0;
				mantissa = 0.0L;
			      }

			    if (has_precision
				&& precision < (unsigned int) ((LDBL_DIG + 1) * 0.831) + 1)
			      {
				/* Round the mantissa.  */
				long double tail = mantissa;
				size_t q;

				for (q = precision; ; q--)
				  {
				    int digit = (int) tail;
				    tail -= digit;
				    if (q == 0)
				      {
					if (digit & 1 ? tail >= 0.5L : tail > 0.5L)
					  tail = 1 - tail;
					else
					  tail = - tail;
					break;
				      }
				    tail *= 16.0L;
				  }
				if (tail != 0.0L)
				  for (q = precision; q > 0; q--)
				    tail *= 0.0625L;
				mantissa += tail;
			      }

			    *p++ = '0';
			    *p++ = dp->conversion - 'A' + 'X';
			    pad_ptr = p;
			    {
			      int digit;

			      digit = (int) mantissa;
			      mantissa -= digit;
			      *p++ = '0' + digit;
			      if ((flags & FLAG_ALT)
				  || mantissa > 0.0L || precision > 0)
				{
				  *p++ = decimal_point_char ();
				  /* This loop terminates because we assume
				     that FLT_RADIX is a power of 2.  */
				  while (mantissa > 0.0L)
				    {
				      mantissa *= 16.0L;
				      digit = (int) mantissa;
				      mantissa -= digit;
				      *p++ = digit
					     + (digit < 10
						? '0'
						: dp->conversion - 10);
				      if (precision > 0)
					precision--;
				    }
				  while (precision > 0)
				    {
				      *p++ = '0';
				      precision--;
				    }
				}
			      }
			      *p++ = dp->conversion - 'A' + 'P';
#  if WIDE_CHAR_VERSION
			      {
				static const wchar_t decimal_format[] =
				  { '%', '+', 'd', '\0' };
				SNPRINTF (p, 6 + 1, decimal_format, exponent);
			      }
			      while (*p != '\0')
				p++;
#  else
			      if (sizeof (DCHAR_T) == 1)
				{
				  sprintf ((char *) p, "%+d", exponent);
				  while (*p != '\0')
				    p++;
				}
			      else
				{
				  char expbuf[6 + 1];
				  const char *ep;
				  sprintf (expbuf, "%+d", exponent);
				  for (ep = expbuf; (*p = *ep) != '\0'; ep++)
				    p++;
				}
#  endif
			  }

			END_LONG_DOUBLE_ROUNDING ();
		      }
# else
		    abort ();
# endif
		  }
		else
		  {
# if NEED_PRINTF_DIRECTIVE_A || NEED_PRINTF_DOUBLE
		    double arg = a.arg[dp->arg_index].a.a_double;

		    if (isnand (arg))
		      {
			if (dp->conversion == 'A')
			  {
			    *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
			  }
			else
			  {
			    *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
			  }
		      }
		    else
		      {
			int sign = 0;

			if (signbit (arg)) /* arg < 0.0 or negative zero */
			  {
			    sign = -1;
			    arg = -arg;
			  }

			if (sign < 0)
			  *p++ = '-';
			else if (flags & FLAG_SHOWSIGN)
			  *p++ = '+';
			else if (flags & FLAG_SPACE)
			  *p++ = ' ';

			if (arg > 0.0 && arg + arg == arg)
			  {
			    if (dp->conversion == 'A')
			      {
				*p++ = 'I'; *p++ = 'N'; *p++ = 'F';
			      }
			    else
			      {
				*p++ = 'i'; *p++ = 'n'; *p++ = 'f';
			      }
			  }
			else
			  {
			    int exponent;
			    double mantissa;

			    if (arg > 0.0)
			      mantissa = printf_frexp (arg, &exponent);
			    else
			      {
				exponent = 0;
				mantissa = 0.0;
			      }

			    if (has_precision
				&& precision < (unsigned int) ((DBL_DIG + 1) * 0.831) + 1)
			      {
				/* Round the mantissa.  */
				double tail = mantissa;
				size_t q;

				for (q = precision; ; q--)
				  {
				    int digit = (int) tail;
				    tail -= digit;
				    if (q == 0)
				      {
					if (digit & 1 ? tail >= 0.5 : tail > 0.5)
					  tail = 1 - tail;
					else
					  tail = - tail;
					break;
				      }
				    tail *= 16.0;
				  }
				if (tail != 0.0)
				  for (q = precision; q > 0; q--)
				    tail *= 0.0625;
				mantissa += tail;
			      }

			    *p++ = '0';
			    *p++ = dp->conversion - 'A' + 'X';
			    pad_ptr = p;
			    {
			      int digit;

			      digit = (int) mantissa;
			      mantissa -= digit;
			      *p++ = '0' + digit;
			      if ((flags & FLAG_ALT)
				  || mantissa > 0.0 || precision > 0)
				{
				  *p++ = decimal_point_char ();
				  /* This loop terminates because we assume
				     that FLT_RADIX is a power of 2.  */
				  while (mantissa > 0.0)
				    {
				      mantissa *= 16.0;
				      digit = (int) mantissa;
				      mantissa -= digit;
				      *p++ = digit
					     + (digit < 10
						? '0'
						: dp->conversion - 10);
				      if (precision > 0)
					precision--;
				    }
				  while (precision > 0)
				    {
				      *p++ = '0';
				      precision--;
				    }
				}
			      }
			      *p++ = dp->conversion - 'A' + 'P';
#  if WIDE_CHAR_VERSION
			      {
				static const wchar_t decimal_format[] =
				  { '%', '+', 'd', '\0' };
				SNPRINTF (p, 6 + 1, decimal_format, exponent);
			      }
			      while (*p != '\0')
				p++;
#  else
			      if (sizeof (DCHAR_T) == 1)
				{
				  sprintf ((char *) p, "%+d", exponent);
				  while (*p != '\0')
				    p++;
				}
			      else
				{
				  char expbuf[6 + 1];
				  const char *ep;
				  sprintf (expbuf, "%+d", exponent);
				  for (ep = expbuf; (*p = *ep) != '\0'; ep++)
				    p++;
				}
#  endif
			  }
		      }
# else
		    abort ();
# endif
		  }
		/* The generated string now extends from tmp to p, with the
		   zero padding insertion point being at pad_ptr.  */
		if (has_width && p - tmp < width)
		  {
		    size_t pad = width - (p - tmp);
		    DCHAR_T *end = p + pad;

		    if (flags & FLAG_LEFT)
		      {
			/* Pad with spaces on the right.  */
			for (; pad > 0; pad--)
			  *p++ = ' ';
		      }
		    else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
		      {
			/* Pad with zeroes.  */
			DCHAR_T *q = end;

			while (p > pad_ptr)
			  *--q = *--p;
			for (; pad > 0; pad--)
			  *p++ = '0';
		      }
		    else
		      {
			/* Pad with spaces on the left.  */
			DCHAR_T *q = end;

			while (p > tmp)
			  *--q = *--p;
			for (; pad > 0; pad--)
			  *p++ = ' ';
		      }

		    p = end;
		  }

		{
		  size_t count = p - tmp;

		  if (count >= tmp_length)
		    /* tmp_length was incorrectly calculated - fix the
		       code above!  */
		    abort ();

		  /* Make room for the result.  */
		  if (count >= allocated - length)
		    {
		      size_t n = xsum (length, count);

		      ENSURE_ALLOCATION (n);
		    }

		  /* Append the result.  */
		  memcpy (result + length, tmp, count * sizeof (DCHAR_T));
		  if (tmp != tmpbuf)
		    free (tmp);
		  length += count;
		}
	      }
#endif
#if (NEED_PRINTF_INFINITE_DOUBLE || NEED_PRINTF_DOUBLE || NEED_PRINTF_INFINITE_LONG_DOUBLE