32 lines
825 B
C
32 lines
825 B
C
/* @(#)s_signif.c 5.1 93/09/24 */
|
|
/*
|
|
* ====================================================
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
|
* Permission to use, copy, modify, and distribute this
|
|
* software is freely granted, provided that this notice
|
|
* is preserved.
|
|
* ====================================================
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBM_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: s_significand.c,v 1.9 2002/05/26 22:01:58 wiz Exp $");
|
|
#endif
|
|
|
|
/*
|
|
* significand(x) computes just
|
|
* scalb(x, (double) -ilogb(x)),
|
|
* for exercising the fraction-part(F) IEEE 754-1985 test vector.
|
|
*/
|
|
|
|
#include "math.h"
|
|
#include "math_private.h"
|
|
|
|
double
|
|
significand(double x)
|
|
{
|
|
return __ieee754_scalb(x,(double) -ilogb(x));
|
|
}
|