diff options
Diffstat (limited to 'sysdeps/libm-ieee754/s_ldexp.c')
-rw-r--r-- | sysdeps/libm-ieee754/s_ldexp.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/sysdeps/libm-ieee754/s_ldexp.c b/sysdeps/libm-ieee754/s_ldexp.c new file mode 100644 index 0000000..754fef6 --- /dev/null +++ b/sysdeps/libm-ieee754/s_ldexp.c @@ -0,0 +1,33 @@ +/* @(#)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> + +#ifdef __STDC__ + double __ldexp(double value, int exp) +#else + double __ldexp(value, exp) + double value; int exp; +#endif +{ + if(!__finite(value)||value==0.0) return value; + value = __scalbn(value,exp); + if(!__finite(value)||value==0.0) errno = ERANGE; + return value; +} +weak_alias (__ldexp, ldexp) |