unorddf2.c revision 303975
1/* $NetBSD: unorddf2.c,v 1.1 2003/05/06 08:58:19 rearnsha 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__FBSDID("$FreeBSD: releng/11.0/lib/libc/softfloat/unorddf2.c 129203 2004-05-14 12:13:06Z cognet $"); 13 14flag __unorddf2(float64, float64); 15 16flag 17__unorddf2(float64 a, float64 b) 18{ 19 /* 20 * The comparison is unordered if either input is a NaN. 21 * Test for this by comparing each operand with itself. 22 * We must perform both comparisons to correctly check for 23 * signalling NaNs. 24 */ 25 return 1 ^ (float64_eq(a, a) & float64_eq(b, b)); 26} 27