compiler/mlib/w_j1.c

   1 /* @(#)w_j1.c 5.1 93/09/24 */
   2 /*
   3  * ====================================================
   4  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   5  *
   6  * Developed at SunPro, a Sun Microsystems, Inc. business.
   7  * Permission to use, copy, modify, and distribute this
   8  * software is freely granted, provided that this notice
   9  * is preserved.
  10  * ====================================================
  11  */
  12
  13 #ifndef lint
  14 static char rcsid[] = "$FreeBSD: src/lib/msun/src/w_j1.c,v 1.6 1999/08/28 00:07:03 peter Exp $";
  15 #endif
  16
  17 /*
  18  * wrapper of j1
  19  */
  20
  21 #include "math.h"
  22 #include "math_private.h"
  23
  24 double
  25 j1(double x)            /* wrapper j1 */
  26 {
  27 #ifdef _IEEE_LIBM
  28         return __ieee754_j1(x);
  29 #else
  30         double z;
  31         z = __ieee754_j1(x);
  32         if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z;
  33         if(fabs(x)>X_TLOSS) {
  34                 return __kernel_standard(x,x,36); /* j1(|x|>X_TLOSS) */
  35         } else
  36             return z;
  37 #endif
  38 }