Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpf / set.c

diff --git a/gmp/mpf/set.c b/gmp/mpf/set.c
new file mode 100644 (file)
index 0000000..115ab71
--- /dev/null
+++ b/gmp/mpf/set.c
@@ -0,0 +1,45 @@
+/* mpf_set -- Assign a float from another float.
+
+Copyright 1993, 1994, 1995, 2001, 2004 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 3 of the License, or (at your
+option) any later version.
+
+The GNU MP 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 MP Library.  If not, see http://www.gnu.org/licenses/.  */
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+void
+mpf_set (mpf_ptr r, mpf_srcptr u)
+{
+  mp_ptr rp, up;
+  mp_size_t size, asize;
+  mp_size_t prec;
+
+  prec = r->_mp_prec + 1;              /* lie not to lose precision in assignment */
+  size = u->_mp_size;
+  asize = ABS (size);
+  rp = r->_mp_d;
+  up = u->_mp_d;
+
+  if (asize > prec)
+    {
+      up += asize - prec;
+      asize = prec;
+    }
+
+  r->_mp_exp = u->_mp_exp;
+  r->_mp_size = size >= 0 ? asize : -asize;
+  MPN_COPY_INCR (rp, up, asize);
+}