Blame sysdeps/ieee754/ldbl-128/s_isinfl.c
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* Written by J.T. Conklin <jtc@netbsd.org>.
|
|
Packit |
6c4009 |
* Change for long double by Jakub Jelinek <jj@ultra.linux.cz>
|
|
Packit |
6c4009 |
* Public domain.
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#if defined(LIBM_SCCS) && !defined(lint)
|
|
Packit |
6c4009 |
static char rcsid[] = "$NetBSD: $";
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/*
|
|
Packit |
6c4009 |
* isinfl(x) returns 1 if x is inf, -1 if x is -inf, else 0;
|
|
Packit |
6c4009 |
* no branching!
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <math.h>
|
|
Packit |
6c4009 |
#include <math_private.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
int
|
|
Packit |
6c4009 |
__isinfl (_Float128 x)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
int64_t hx,lx;
|
|
Packit |
6c4009 |
GET_LDOUBLE_WORDS64(hx,lx,x);
|
|
Packit |
6c4009 |
lx |= (hx & 0x7fffffffffffffffLL) ^ 0x7fff000000000000LL;
|
|
Packit |
6c4009 |
lx |= -lx;
|
|
Packit |
6c4009 |
return ~(lx >> 63) & (hx >> 62);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
mathx_hidden_def (__isinfl)
|
|
Packit |
6c4009 |
weak_alias (__isinfl, isinfl)
|