1/* $OpenBSD: unorddf2.c,v 1.4 2019/11/10 22:23:29 guenther Exp $ */ 2/* $NetBSD: unorddf2.c,v 1.1 2003/05/06 08:58:19 rearnsha Exp $ */ 3 4/* 5 * Written by Richard Earnshaw, 2003. This file is in the Public Domain. 6 */ 7 8#include "softfloat-for-gcc.h" 9#include "milieu.h" 10#include <softfloat.h> 11 12flag __unorddf2(float64, float64) __dso_protected; 13 14flag 15__unorddf2(float64 a, float64 b) 16{ 17 /* 18 * The comparison is unordered if either input is a NaN. 19 * Test for this by comparing each operand with itself. 20 * We must perform both comparisons to correctly check for 21 * signalling NaNs. 22 */ 23 return 1 ^ (float64_eq(a, a) & float64_eq(b, b)); 24} 25