1 /* $OpenBSD: unordsf2.c,v 1.2 2012/12/05 23:20:01 deraadt Exp $ */ 2 /* $NetBSD: unordsf2.c,v 1.1 2003/05/06 08:58:20 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 12 flag __unordsf2(float32, float32); 13 14 flag 15 __unordsf2(float32 a, float32 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 ^ (float32_eq(a, a) & float32_eq(b, b)); 24 } 25