1/* @(#)w_hypot.c 5.1 93/09/24 */
2/*
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5 *
6 * Developed at SunPro, a Sun Microsystems, Inc. business.
7 * Permission to use, copy, modify, and distribute this
8 * software is freely granted, provided that this notice
9 * is preserved.
10 * ====================================================
11 */
12
13/*
14 * wrapper hypot(x,y)
15 */
16
17#include <math.h>
18#include <math_private.h>
19#include <math-svid-compat.h>
20#include <libm-alias-double.h>
21
22
23#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_35)
24double
25__hypot_compat (double x, double y)
26{
27 double z = __ieee754_hypot(x,y);
28 if(__builtin_expect(!isfinite(z), 0)
29 && isfinite(x) && isfinite(y) && _LIB_VERSION != _IEEE_)
30 return __kernel_standard(x, y, 4); /* hypot overflow */
31
32 return z;
33}
34compat_symbol (libm, __hypot_compat, hypot, GLIBC_2_0);
35# ifdef NO_LONG_DOUBLE
36weak_alias (__hypot_compat, hypotl)
37# endif
38# ifdef LONG_DOUBLE_COMPAT
39LONG_DOUBLE_COMPAT_CHOOSE_libm_hypotl (
40 compat_symbol (libm, __hypot_compat, hypotl, FIRST_VERSION_libm_hypotl), );
41# endif
42#endif
43