1*2fe8fb19SBen Gras /* w_atan2f.c -- float version of w_atan2.c.
2*2fe8fb19SBen Gras * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3*2fe8fb19SBen Gras */
4*2fe8fb19SBen Gras
5*2fe8fb19SBen Gras /*
6*2fe8fb19SBen Gras * ====================================================
7*2fe8fb19SBen Gras * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8*2fe8fb19SBen Gras *
9*2fe8fb19SBen Gras * Developed at SunPro, a Sun Microsystems, Inc. business.
10*2fe8fb19SBen Gras * Permission to use, copy, modify, and distribute this
11*2fe8fb19SBen Gras * software is freely granted, provided that this notice
12*2fe8fb19SBen Gras * is preserved.
13*2fe8fb19SBen Gras * ====================================================
14*2fe8fb19SBen Gras */
15*2fe8fb19SBen Gras
16*2fe8fb19SBen Gras #include <sys/cdefs.h>
17*2fe8fb19SBen Gras #if defined(LIBM_SCCS) && !defined(lint)
18*2fe8fb19SBen Gras __RCSID("$NetBSD: w_atan2f.c,v 1.7 2007/08/10 21:20:36 drochner Exp $");
19*2fe8fb19SBen Gras #endif
20*2fe8fb19SBen Gras
21*2fe8fb19SBen Gras /*
22*2fe8fb19SBen Gras * wrapper atan2f(y,x)
23*2fe8fb19SBen Gras */
24*2fe8fb19SBen Gras
25*2fe8fb19SBen Gras #include "namespace.h"
26*2fe8fb19SBen Gras #include "math.h"
27*2fe8fb19SBen Gras #include "math_private.h"
28*2fe8fb19SBen Gras
29*2fe8fb19SBen Gras #ifdef __weak_alias
__weak_alias(atan2f,_atan2f)30*2fe8fb19SBen Gras __weak_alias(atan2f, _atan2f)
31*2fe8fb19SBen Gras #endif
32*2fe8fb19SBen Gras
33*2fe8fb19SBen Gras float
34*2fe8fb19SBen Gras atan2f(float y, float x) /* wrapper atan2f */
35*2fe8fb19SBen Gras {
36*2fe8fb19SBen Gras #ifdef _IEEE_LIBM
37*2fe8fb19SBen Gras return __ieee754_atan2f(y,x);
38*2fe8fb19SBen Gras #else
39*2fe8fb19SBen Gras float z;
40*2fe8fb19SBen Gras z = __ieee754_atan2f(y,x);
41*2fe8fb19SBen Gras if(_LIB_VERSION == _IEEE_||isnanf(x)||isnanf(y)) return z;
42*2fe8fb19SBen Gras if(x==(float)0.0&&y==(float)0.0) {
43*2fe8fb19SBen Gras /* atan2f(+-0,+-0) */
44*2fe8fb19SBen Gras return (float)__kernel_standard((double)y,(double)x,103);
45*2fe8fb19SBen Gras } else
46*2fe8fb19SBen Gras return z;
47*2fe8fb19SBen Gras #endif
48*2fe8fb19SBen Gras }
49