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      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
     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