| /* @(#)s_ldexp.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. |
| * ==================================================== |
| */ |
| |
| #if defined(LIBM_SCCS) && !defined(lint) |
| static char rcsid[] = "$NetBSD: s_ldexp.c,v 1.6 1995/05/10 20:47:40 jtc Exp $"; |
| #endif |
| |
| #include <math.h> |
| #include <math_private.h> |
| #include <errno.h> |
| |
| FLOAT |
| M_SUF (__ldexp) (FLOAT value, int exp) |
| { |
| if(!isfinite(value)||value==0) return value + value; |
| value = M_SCALBN(value,exp); |
| if(!isfinite(value)||value==0) __set_errno (ERANGE); |
| return value; |
| } |
| |
| declare_mgen_alias (__ldexp, ldexp) |
| strong_alias (M_SUF (__ldexp), M_SUF (__wrap_scalbn)) |
| declare_mgen_alias (__wrap_scalbn, scalbn) |
| |
| /* Note, versioning issues are punted to ldbl-opt in this case. */ |
