| |
| /* @(#)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 scalb(x,(double) -ilogb(x)); |
| } |
| |
| #endif /* _DOUBLE_IS_32BITS */ |
