/* 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. * ==================================================== */ #ifndef lint static char rcsid[] = "$Id: w_atan2f.c,v 1.1.1.1 1994/08/19 09:39:59 jkh 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 }