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Diffstat (limited to 'REORG.TODO/sysdeps/ieee754/dbl-64/s_finite.c')
| -rw-r--r-- | REORG.TODO/sysdeps/ieee754/dbl-64/s_finite.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/ieee754/dbl-64/s_finite.c b/REORG.TODO/sysdeps/ieee754/dbl-64/s_finite.c new file mode 100644 index 0000000000..69141db75d --- /dev/null +++ b/REORG.TODO/sysdeps/ieee754/dbl-64/s_finite.c @@ -0,0 +1,50 @@ +/* @(#)s_finite.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_finite.c,v 1.8 1995/05/10 20:47:17 jtc Exp $"; +#endif + +/* + * finite(x) returns 1 is x is finite, else 0; + * no branching! + */ + +#include <math.h> +#include <math_private.h> +#include <shlib-compat.h> + +#undef __finite + +#ifndef FINITE +# define FINITE __finite +#endif + +int FINITE(double x) +{ + int32_t hx; + GET_HIGH_WORD (hx, x); + return (int) ((u_int32_t) ((hx & 0x7ff00000) - 0x7ff00000) >> 31); +} +hidden_def (__finite) +weak_alias (__finite, finite) +#ifdef NO_LONG_DOUBLE +# ifdef LDBL_CLASSIFY_COMPAT +# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23) +compat_symbol (libc, __finite, __finitel, GLIBC_2_0); +# endif +# if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_23) +compat_symbol (libm, __finite, __finitel, GLIBC_2_1); +# endif +# endif +weak_alias (__finite, finitel) +#endif |