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      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 1.9 2002/05/26 22:01:58 wiz 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 
     27 double
     28 significand(double x)
     29 {
     30 	return __ieee754_scalb(x,(double) -ilogb(x));
     31 }
     32