libm/s_significand.c

   1 /*
   2  * ====================================================
   3  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   4  *
   5  * Developed at SunPro, a Sun Microsystems, Inc. business.
   6  * Permission to use, copy, modify, and distribute this
   7  * software is freely granted, provided that this notice
   8  * is preserved.
   9  * ====================================================
  10  */
  11
  12 /*
  13  * significand(x) computes just
  14  *      scalb(x, (double) -ilogb(x)),
  15  * for exercising the fraction-part(F) IEEE 754-1985 test vector.
  16  */
  17
  18 #include "math.h"
  19 #include "math_private.h"
  20
  21 double significand(double x)
  22 {
  23         return __ieee754_scalb(x,(double) -ilogb(x));
  24 }