1 files changed, 47 insertions, 0 deletions
diff --git a/arch/mips/math-emu/sp_cmp.c b/arch/mips/math-emu/sp_cmp.c
new file mode 100644
index 000000000..64a37362a
--- /dev/null
+++ b/arch/mips/math-emu/sp_cmp.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* IEEE754 floating point arithmetic
+ * single precision
+ */
+/*
+ * MIPS floating point support
+ * Copyright (C) 1994-2000 Algorithmics Ltd.
+ */
+
+#include "ieee754sp.h"
+
+int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig)
+{
+	int vx;
+	int vy;
+
+	COMPXSP;
+	COMPYSP;
+
+	EXPLODEXSP;
+	EXPLODEYSP;
+	FLUSHXSP;
+	FLUSHYSP;
+	ieee754_clearcx();	/* Even clear inexact flag here */
+
+	if (ieee754_class_nan(xc) || ieee754_class_nan(yc)) {
+		if (sig ||
+		    xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN)
+			ieee754_setcx(IEEE754_INVALID_OPERATION);
+		return (cmp & IEEE754_CUN) != 0;
+	} else {
+		vx = x.bits;
+		vy = y.bits;
+
+		if (vx < 0)
+			vx = -vx ^ SP_SIGN_BIT;
+		if (vy < 0)
+			vy = -vy ^ SP_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;
+	}
+}