1 /* $NetBSD: __aeabi_dcmpun.c,v 1.1 2013/04/16 10:37:39 matt Exp $ */
2 
3 /*
4  * Written by Richard Earnshaw, 2003.  This file is in the Public Domain.
5  */
6 
7 #include "softfloat-for-gcc.h"
8 #include "milieu.h"
9 #include "softfloat.h"
10 
11 #include <sys/cdefs.h>
12 #if defined(LIBC_SCCS) && !defined(lint)
13 __RCSID("$NetBSD: __aeabi_dcmpun.c,v 1.1 2013/04/16 10:37:39 matt Exp $");
14 #endif /* LIBC_SCCS and not lint */
15 
16 int __aeabi_dcmpun(float64, float64);
17 
18 int
__aeabi_dcmpun(float64 a,float64 b)19 __aeabi_dcmpun(float64 a, float64 b)
20 {
21 	/*
22 	 * The comparison is unordered if either input is a NaN.
23 	 * Test for this by comparing each operand with itself.
24 	 * We must perform both comparisons to correctly check for
25 	 * signalling NaNs.
26 	 */
27 	return !float64_eq(a, a) || !float64_eq(b, b);
28 }
29