1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* w_atan2f.c -- float version of w_atan2.c.
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@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: w_atan2f.c,v 1.3 1995/05/10 20:48:42 jtc Exp $";
#endif
/*
* wrapper atan2f(y,x)
*/
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
float __atan2f(float y, float x) /* wrapper atan2f */
#else
float __atan2f(y,x) /* wrapper atan2 */
float y,x;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_atan2f(y,x);
#else
float z;
z = __ieee754_atan2f(y,x);
if(_LIB_VERSION == _IEEE_||__isnanf(x)||__isnanf(y)) return z;
if(x==(float)0.0&&y==(float)0.0) {
/* atan2f(+-0,+-0) */
return (float)__kernel_standard((double)y,(double)x,103);
} else
return z;
#endif
}
weak_alias (__atan2f, atan2f)
|
