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 #include <sys/cdefs.h> 13 /* 14 * significand(x) computes just 15 * scalb(x, (double) -ilogb(x)), 16 * for exercising the fraction-part(F) IEEE 754-1985 test vector. 17 */ 18 19 #include "math.h" 20 #include "math_private.h" 21 22 double 23 significand(double x) 24 { 25 return scalb(x,(double) -ilogb(x)); 26 } 27