| 0,0 → 1,48 |
|---|
| /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */ |
| /* 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[] = "$Id: w_atan2f.c,v 1.1 1994/08/10 20:33:41 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 |
| } |