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__FBSDID("$FreeBSD$");
15
16/*
17 * significand(x) computes just
18 * 	scalb(x, (double) -ilogb(x)),
19 * for exercising the fraction-part(F) IEEE 754-1985 test vector.
20 */
21
22#include "math.h"
23#include "math_private.h"
24
25double
26significand(double x)
27{
28	return __ieee754_scalb(x,(double) -ilogb(x));
29}
30