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Diffstat (limited to 'math/w_atan2f.c')
| -rw-r--r-- | math/w_atan2f.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/math/w_atan2f.c b/math/w_atan2f.c new file mode 100644 index 0000000..efb08f0 --- /dev/null +++ b/math/w_atan2f.c @@ -0,0 +1,46 @@ +/* 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 != _SVID_||__isnanf(x)||__isnanf(y)) return z; + if(x==0.0&&y==0.0) + return __kernel_standard(y,x,103); /* atan2(+-0,+-0) */ + return z; +#endif +} +weak_alias (__atan2f, atan2f) |