1 files changed, 80 insertions, 0 deletions

diff --git a/arch/mips/math-emu/dp_fint.c b/arch/mips/math-emu/dp_fint.c
new file mode 100644
index 000000000000..0065deaee24b
--- /dev/null
+++ b/arch/mips/math-emu/dp_fint.c
@@ -0,0 +1,80 @@
+/* IEEE754 floating point arithmetic
+ * double precision: common utilities
+ */
+/*
+ * MIPS floating point support
+ * Copyright (C) 1994-2000 Algorithmics Ltd.
+ * http://www.algor.co.uk
+ *
+ * ########################################################################
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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 this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * ########################################################################
+ */
+
+
+#include "ieee754dp.h"
+
+ieee754dp ieee754dp_fint(int x)
+{
+        COMPXDP;
+
+        CLEARCX;
+
+        xc = ( 0 ? xc : xc );
+
+        if (x == 0)
+                return ieee754dp_zero(0);
+        if (x == 1 || x == -1)
+                return ieee754dp_one(x < 0);
+        if (x == 10 || x == -10)
+                return ieee754dp_ten(x < 0);
+
+        xs = (x < 0);
+        if (xs) {
+                if (x == (1 << 31))
+                        xm = ((unsigned) 1 << 31);      /* max neg can't be safely negated */
+                else
+                        xm = -x;
+        } else {
+                xm = x;
+        }
+
+#if 1
+        /* normalize - result can never be inexact or overflow */
+        xe = DP_MBITS;
+        while ((xm >> DP_MBITS) == 0) {
+                xm <<= 1;
+                xe--;
+        }
+        return builddp(xs, xe + DP_EBIAS, xm & ~DP_HIDDEN_BIT);
+#else
+        /* normalize */
+        xe = DP_MBITS + 3;
+        while ((xm >> (DP_MBITS + 3)) == 0) {
+                xm <<= 1;
+                xe--;
+        }
+        DPNORMRET1(xs, xe, xm, "fint", x);
+#endif
+}
+
+ieee754dp ieee754dp_funs(unsigned int u)
+{
+        if ((int) u < 0)
+                return ieee754dp_add(ieee754dp_1e31(),
+                                     ieee754dp_fint(u & ~(1 << 31)));
+        return ieee754dp_fint(u);
+}