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