You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
41 lines
909 B
41 lines
909 B
4 months ago
|
|
||
|
|
/* @(#)w_atan2.c 1.3 95/01/18 */
|
||
|
|
/*
|
||
|
|
* ====================================================
|
||
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
||
|
|
*
|
||
|
|
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
||
|
|
* Permission to use, copy, modify, and distribute this
|
||
|
|
* software is freely granted, provided that this notice
|
||
|
|
* is preserved.
|
||
|
|
* ====================================================
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* wrapper ieee_atan2(y,x)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "fdlibm.h"
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __STDC__
|
||
|
|
double ieee_atan2(double y, double x) /* wrapper atan2 */
|
||
|
|
#else
|
||
|
|
double ieee_atan2(y,x) /* wrapper atan2 */
|
||
|
|
double y,x;
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
#ifdef _IEEE_LIBM
|
||
|
|
return __ieee754_atan2(y,x);
|
||
|
|
#else
|
||
|
|
double z;
|
||
|
|
z = __ieee754_atan2(y,x);
|
||
|
|
if(_LIB_VERSION == _IEEE_||ieee_isnan(x)||ieee_isnan(y)) return z;
|
||
|
|
if(x==0.0&&y==0.0) {
|
||
|
|
return __kernel_standard(y,x,3); /* ieee_atan2(+-0,+-0) */
|
||
|
|
} else
|
||
|
|
return z;
|
||
|
|
#endif
|
||
|
|
}
|