1 2 /* @(#)w_asin.c 1.3 95/01/18 */ 3 /* 4 * ==================================================== 5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 6 * 7 * Developed at SunSoft, a Sun Microsystems, Inc. business. 8 * Permission to use, copy, modify, and distribute this 9 * software is freely granted, provided that this notice 10 * is preserved. 11 * ==================================================== 12 * 13 */ 14 15 /* 16 * wrapper ieee_asin(x) 17 */ 18 19 20 #include "fdlibm.h" 21 22 23 #ifdef __STDC__ 24 double ieee_asin(double x) /* wrapper asin */ 25 #else 26 double ieee_asin(x) /* wrapper asin */ 27 double x; 28 #endif 29 { 30 #ifdef _IEEE_LIBM 31 return __ieee754_asin(x); 32 #else 33 double z; 34 z = __ieee754_asin(x); 35 if(_LIB_VERSION == _IEEE_ || ieee_isnan(x)) return z; 36 if(ieee_fabs(x)>1.0) { 37 return __kernel_standard(x,x,2); /* ieee_asin(|x|>1) */ 38 } else 39 return z; 40 #endif 41 } 42
