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 22 significand(double x) 23 { 24 return scalb(x,(double) -ilogb(x)); 25 } 26