| /* s_isnanl.c -- long double version of s_isnan.c. | |
| * Conversion to long double by Jakub Jelinek, jj@ultra.linux.cz. | |
| */ | |
| /* | |
| * ==================================================== | |
| * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. | |
| * | |
| * Developed at SunPro, a Sun Microsystems, Inc. business. | |
| * Permission to use, copy, modify, and distribute this | |
| * software is freely granted, provided that this notice | |
| * is preserved. | |
| * ==================================================== | |
| */ | |
| #if defined(LIBM_SCCS) && !defined(lint) | |
| static char rcsid[] = "$NetBSD: $"; | |
| #endif | |
| /* | |
| * isnanq(x) returns 1 is x is nan, else 0; | |
| * no branching! | |
| */ | |
| #include "quadmath-imp.h" | |
| int isnanq(__float128 x) | |
| { | |
| int64_t hx,lx; | |
| GET_FLT128_WORDS64(hx,lx,x); | |
| hx &= 0x7fffffffffffffffLL; | |
| hx |= (uint64_t)(lx|(-lx))>>63; | |
| hx = 0x7fff000000000000LL - hx; | |
| return (int)((uint64_t)hx>>63); | |
| } |