unord for float128 long double

lib/libc/softfloat/unordtf2.c

@@ -0,0 +1,28 @@
+/* $NetBSD: unordtf2.c,v 1.1 2014/01/30 19:06:54 matt Exp $ */
+
+/*
+ * Written by Richard Earnshaw, 2003.  This file is in the Public Domain.
+ */
+
+#include "softfloat-for-gcc.h"
+#include "milieu.h"
+#include "softfloat.h"
+
+#include <sys/cdefs.h>
+#if defined(LIBC_SCCS) && !defined(lint)
+__RCSID("$NetBSD: unordtf2.c,v 1.1 2014/01/30 19:06:54 matt Exp $");
+#endif /* LIBC_SCCS and not lint */
+
+flag __unordtf2(float128, float128);
+
+flag
+__unordtf2(float128 a, float128 b)
+{
+	/*
+	 * The comparison is unordered if either input is a NaN.
+	 * Test for this by comparing each operand with itself.
+	 * We must perform both comparisons to correctly check for
+	 * signalling NaNs.
+	 */
+	return 1 ^ (float128_eq(a, a) & float128_eq(b, b));
+}