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-rw-r--r--sysdeps/x86_64/fpu/printf_fphex.c92
1 files changed, 92 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/printf_fphex.c b/sysdeps/x86_64/fpu/printf_fphex.c
new file mode 100644
index 0000000000..d6ca102a88
--- /dev/null
+++ b/sysdeps/x86_64/fpu/printf_fphex.c
@@ -0,0 +1,92 @@
+/* Print floating point number in hexadecimal notation according to ISO C99.
+   Copyright (C) 1997, 1998, 1999, 2000, 2001 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#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;					      \
+									      \
+									      \
+      num = (((unsigned long long int) fpnum.ldbl.ieee.mantissa0) << 32	      \
+	     | fpnum.ldbl.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++;						      \
+									      \
+      /* We have 3 bits from the mantissa in the leading nibble.	      \
+	 Therefore we are here using `IEEE854_LONG_DOUBLE_BIAS + 3'.  */      \
+      exponent = fpnum.ldbl.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 <sysdeps/generic/printf_fphex.c>