1 files changed, 71 insertions, 0 deletions
diff --git a/binutils-2.25/gas/flonum-copy.c b/binutils-2.25/gas/flonum-copy.c
new file mode 100644
index 00000000..c1131b12
--- /dev/null
+++ b/binutils-2.25/gas/flonum-copy.c
@@ -0,0 +1,71 @@
+/* flonum_copy.c - copy a flonum
+   Copyright 1987, 1990, 1991, 1992, 1993, 2000, 2003, 2005, 2007
+   Free Software Foundation, Inc.
+
+   This file is part of GAS, the GNU Assembler.
+
+   GAS is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GAS 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GAS; see the file COPYING.  If not, write to the Free
+   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#include "as.h"
+
+void
+flonum_copy (FLONUM_TYPE *in, FLONUM_TYPE *out)
+{
+  unsigned int in_length;	/* 0 origin */
+  unsigned int out_length;	/* 0 origin */
+
+  out->sign = in->sign;
+  in_length = in->leader - in->low;
+
+  if (in->leader < in->low)
+    {
+      out->leader = out->low - 1;	/* 0.0 case */
+    }
+  else
+    {
+      out_length = out->high - out->low;
+      /* Assume no GAPS in packing of littlenums.
+	 I.e. sizeof(array) == sizeof(element) * number_of_elements.  */
+      if (in_length <= out_length)
+	{
+	  {
+	    /* For defensive programming, zero any high-order
+	       littlenums we don't need.  This is destroying evidence
+	       and wasting time, so why bother???  */
+	    if (in_length < out_length)
+	      {
+		memset ((char *) (out->low + in_length + 1), '\0',
+			out_length - in_length);
+	      }
+	  }
+	  memcpy ((void *) (out->low), (void *) (in->low),
+		  ((in_length + 1) * sizeof (LITTLENUM_TYPE)));
+	  out->exponent = in->exponent;
+	  out->leader = in->leader - in->low + out->low;
+	}
+      else
+	{
+	  int shorten;		/* 1-origin. Number of littlenums we drop.  */
+
+	  shorten = in_length - out_length;
+	  /* Assume out_length >= 0 ! */
+	  memcpy ((void *) (out->low), (void *) (in->low + shorten),
+		  ((out_length + 1) * sizeof (LITTLENUM_TYPE)));
+	  out->leader = out->high;
+	  out->exponent = in->exponent + shorten;
+	}
+    }				/* if any significant bits */
+}