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;
+        }
+}