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1 | /* w_atan2f.c -- float version of w_atan2.c. |
2 | * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. | |
3 | */ | |
4 | ||
5 | /* | |
6 | * ==================================================== | |
7 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. | |
8 | * | |
9 | * Developed at SunPro, a Sun Microsystems, Inc. business. | |
10 | * Permission to use, copy, modify, and distribute this | |
0d8733c4 | 11 | * software is freely granted, provided that this notice |
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12 | * is preserved. |
13 | * ==================================================== | |
14 | */ | |
15 | ||
16 | #if defined(LIBM_SCCS) && !defined(lint) | |
17 | static char rcsid[] = "$NetBSD: w_atan2f.c,v 1.3 1995/05/10 20:48:42 jtc Exp $"; | |
18 | #endif | |
19 | ||
0d8733c4 | 20 | /* |
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21 | * wrapper atan2f(y,x) |
22 | */ | |
23 | ||
0ecb606c | 24 | #include <math.h> |
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25 | #include "math_private.h" |
26 | ||
27 | ||
28 | #ifdef __STDC__ | |
29 | float __atan2f(float y, float x) /* wrapper atan2f */ | |
30 | #else | |
31 | float __atan2f(y,x) /* wrapper atan2 */ | |
32 | float y,x; | |
33 | #endif | |
34 | { | |
35 | #ifdef _IEEE_LIBM | |
36 | return __ieee754_atan2f(y,x); | |
37 | #else | |
38 | float z; | |
39 | z = __ieee754_atan2f(y,x); | |
81e9dad6 UD |
40 | if(_LIB_VERSION != _SVID_||__isnanf(x)||__isnanf(y)) return z; |
41 | if(x==0.0&&y==0.0) | |
42 | return __kernel_standard(y,x,103); /* atan2(+-0,+-0) */ | |
0d8733c4 | 43 | return z; |
f7eac6eb RM |
44 | #endif |
45 | } | |
46 | weak_alias (__atan2f, atan2f) |