glibc/math/w_hypot.c
Ulrich Drepper 0ac5ae2335 Optimize libm
libm is now somewhat integrated with gcc's -ffinite-math-only option
and lots of the wrapper functions have been optimized.
2011-10-12 11:27:51 -04:00

36 lines
855 B
C

/* @(#)w_hypot.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.
* ====================================================
*/
/*
* wrapper hypot(x,y)
*/
#include <math.h>
#include <math_private.h>
double
__hypot (double x, double y)
{
double z = __ieee754_hypot(x,y);
if(__builtin_expect(!__finite(z), 0)
&& __finite(x) && __finite(y) && _LIB_VERSION != _IEEE_)
return __kernel_standard(x, y, 4); /* hypot overflow */
return z;
}
weak_alias (__hypot, hypot)
#ifdef NO_LONG_DOUBLE
strong_alias (__hypot, __hypotl)
weak_alias (__hypot, hypotl)
#endif