1/* @(#)s_signif.c 5.1 93/09/24 */
2/*
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5 *
6 * Developed at SunPro, a Sun Microsystems, Inc. business.
7 * Permission to use, copy, modify, and distribute this
8 * software is freely granted, provided that this notice
9 * is preserved.
10 * ====================================================
11 */
12
13#include <sys/cdefs.h>
14#if defined(LIBM_SCCS) && !defined(lint)
15__RCSID("$NetBSD: s_significand.c,v 1.8 1999/07/02 15:37:43 simonb Exp $");
16#endif
17
18/*
19 * significand(x) computes just
20 * 	scalb(x, (double) -ilogb(x)),
21 * for exercising the fraction-part(F) IEEE 754-1985 test vector.
22 */
23
24#include "math.h"
25#include "math_private.h"
26
27double
28significand(double x)
29{
30	return __ieee754_scalb(x,(double) -ilogb(x));
31}
32