| /* |
| * Written by J.T. Conklin <jtc@netbsd.org>. |
| * Change for long double by Jakub Jelinek <jj@ultra.linux.cz> |
| * Public domain. |
| */ |
| |
| #if defined(LIBM_SCCS) && !defined(lint) |
| static char rcsid[] = "$NetBSD: $"; |
| #endif |
| |
| /* |
| * isinfl(x) returns 1 if x is inf, -1 if x is -inf, else 0; |
| * no branching! |
| */ |
| |
| #include "math.h" |
| #include "math_private.h" |
| #include <math_ldbl_opt.h> |
| |
| int |
| ___isinfl (long double x) |
| { |
| int64_t hx,lx; |
| GET_LDOUBLE_WORDS64(hx,lx,x); |
| lx = (lx & 0x7fffffffffffffffLL); |
| lx |= (hx & 0x7fffffffffffffffLL) ^ 0x7ff0000000000000LL; |
| lx |= -lx; |
| return ~(lx >> 63) & (hx >> 62); |
| } |
| hidden_ver (___isinfl, __isinfl) |
| #ifndef IS_IN_libm |
| weak_alias (___isinfl, ____isinfl) |
| long_double_symbol (libc, ___isinfl, isinfl); |
| long_double_symbol (libc, ____isinfl, __isinfl); |
| #endif |
