diff options
Diffstat (limited to 'sysdeps/libm-ieee754/s_finitel.c')
| -rw-r--r-- | sysdeps/libm-ieee754/s_finitel.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/sysdeps/libm-ieee754/s_finitel.c b/sysdeps/libm-ieee754/s_finitel.c new file mode 100644 index 0000000..02487c6 --- /dev/null +++ b/sysdeps/libm-ieee754/s_finitel.c @@ -0,0 +1,40 @@ +/* s_finitel.c -- long double version of s_finite.c. + * Conversion to long double by Ulrich Drepper, + * Cygnus Support, drepper@cygnus.com. + */ + +/* + * ==================================================== + * 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: $"; +#endif + +/* + * finitel(x) returns 1 is x is finite, else 0; + * no branching! + */ + +#include "math.h" +#include "math_private.h" + +#ifdef __STDC__ + int __finite(long double x) +#else + int __finite(x) + long double x; +#endif +{ + int32_t exp; + GET_LDOUBLE_EXP(exp,x); + return (int)((u_int32_t)((exp&0x7fff)-0x7fff)>>15); +} +weak_alias (__finitel, finitel) |