projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7eac6eb RM |
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 |
| f7eac6eb RM |
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 | /* |
| f7eac6eb RM |
21 | * wrapper atan2f(y,x) |
| 22 | */ | |
| 23 | ||
| 9d13fb24 | 24 | #include <math.h> |
| 9277c064 | 25 | #include <math_private.h> |
| f7eac6eb RM |
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) |