35 lines
781 B
C
35 lines
781 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.
|
|
* ====================================================
|
|
*/
|
|
|
|
/*
|
|
* significand(x) computes just
|
|
* scalb(x, (double) -ilogb(x)),
|
|
* for exercising the fraction-part(F) IEEE 754-1985 test vector.
|
|
*/
|
|
|
|
#include "fdlibm.h"
|
|
|
|
#ifndef _DOUBLE_IS_32BITS
|
|
|
|
#ifdef __STDC__
|
|
double significand(double x)
|
|
#else
|
|
double significand(x)
|
|
double x;
|
|
#endif
|
|
{
|
|
return __ieee754_scalb(x,(double) -ilogb(x));
|
|
}
|
|
|
|
#endif /* _DOUBLE_IS_32BITS */
|