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       ---
       s_significand.c (807B)
       ---
            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 #ifndef lint
           14 static char rcsid[] = "$FreeBSD: src/lib/msun/src/s_significand.c,v 1.9 2003/07/23 04:53:47 peter Exp $";
           15 #endif
           16 
           17 /*
           18  * significand(x) computes just
           19  *         scalb(x, (double) -ilogb(x)),
           20  * for exercising the fraction-part(F) IEEE 754-1985 test vector.
           21  */
           22 
           23 #include "math.h"
           24 #include "math_private.h"
           25 
           26 double
           27 significand(double x)
           28 {
           29         return __ieee754_scalb(x,(double) -ilogb(x));
           30 }