1 files changed, 67 insertions, 0 deletions
diff --git a/arch/mips/math-emu/dp_cmp.c b/arch/mips/math-emu/dp_cmp.c
new file mode 100644
index 000000000000..8ab4f320a478
--- /dev/null
+++ b/arch/mips/math-emu/dp_cmp.c
@@ -0,0 +1,67 @@
+/* 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"
+
+int ieee754dp_cmp(ieee754dp x, ieee754dp y, int cmp, int sig)
+{
+	COMPXDP;
+	COMPYDP;
+
+	EXPLODEXDP;
+	EXPLODEYDP;
+	FLUSHXDP;
+	FLUSHYDP;
+	CLEARCX;	/* Even clear inexact flag here */
+
+	if (ieee754dp_isnan(x) || ieee754dp_isnan(y)) {
+		if (sig || xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN)
+			SETCX(IEEE754_INVALID_OPERATION);
+		if (cmp & IEEE754_CUN)
+			return 1;
+		if (cmp & (IEEE754_CLT | IEEE754_CGT)) {
+			if (sig && SETANDTESTCX(IEEE754_INVALID_OPERATION))
+				return ieee754si_xcpt(0, "fcmpf", x);
+		}
+		return 0;
+	} else {
+		s64 vx = x.bits;
+		s64 vy = y.bits;
+
+		if (vx < 0)
+			vx = -vx ^ DP_SIGN_BIT;
+		if (vy < 0)
+			vy = -vy ^ DP_SIGN_BIT;
+
+		if (vx < vy)
+			return (cmp & IEEE754_CLT) != 0;
+		else if (vx == vy)
+			return (cmp & IEEE754_CEQ) != 0;
+		else
+			return (cmp & IEEE754_CGT) != 0;
+	}
+}