w_atan2f.c - vx32 - Local 9vx git repository for patches.
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       ---
       w_atan2f.c (1074B)
       ---
            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
           11  * software is freely granted, provided that this notice
           12  * is preserved.
           13  * ====================================================
           14  */
           15 
           16 #ifndef lint
           17 static char rcsid[] = "$FreeBSD: src/lib/msun/src/w_atan2f.c,v 1.7 2002/05/28 18:15:04 alfred Exp $";
           18 #endif
           19 
           20 /*
           21  * wrapper atan2f(y,x)
           22  */
           23 
           24 #include "math.h"
           25 #include "math_private.h"
           26 
           27 
           28 float
           29 atan2f(float y, float x)                /* wrapper atan2f */
           30 {
           31 #ifdef _IEEE_LIBM
           32         return __ieee754_atan2f(y,x);
           33 #else
           34         float z;
           35         z = __ieee754_atan2f(y,x);
           36         if(_LIB_VERSION == _IEEE_||isnanf(x)||isnanf(y)) return z;
           37         if(x==(float)0.0&&y==(float)0.0) {
           38                 /* atan2f(+-0,+-0) */
           39                 return (float)__kernel_standard((double)y,(double)x,103);
           40         } else
           41             return z;
           42 #endif
           43 }