/*

 * Written by J.T. Conklin <jtc@netbsd.org>.

 * Public domain.

 */

#if defined(LIBM_SCCS) && !defined(lint)

static char rcsid[] = "$NetBSD: s_isinff.c,v 1.3 1995/05/11 23:20:21 jtc Exp $";

#endif

/*

 * isinff(x) returns 1 if x is inf, -1 if x is -inf, else 0;

 * no branching!

 */

#include <math.h>

#include <math_private.h>

int

__isinff (float x)

{

	int32_t ix,t;

	GET_FLOAT_WORD(ix,x);

	t = ix & 0x7fffffff;

	t ^= 0x7f800000;

	t |= -t;

	return ~(t >> 31) & (ix >> 30);

}

hidden_def (__isinff)

weak_alias (__isinff, isinff)