compiler/mlib/w_jnf.c

   1 /* w_jnf.c -- float version of w_jn.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_jnf.c,v 1.6 1999/08/28 00:07:04 peter Exp $";
  18 #endif
  19
  20 #include "math.h"
  21 #include "math_private.h"
  22
  23 float
  24 jnf(int n, float x)     /* wrapper jnf */
  25 {
  26 #ifdef _IEEE_LIBM
  27         return __ieee754_jnf(n,x);
  28 #else
  29         float z;
  30         z = __ieee754_jnf(n,x);
  31         if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z;
  32         if(fabsf(x)>(float)X_TLOSS) {
  33             /* jn(|x|>X_TLOSS,n) */
  34             return (float)__kernel_standard((double)n,(double)x,138);
  35         } else
  36             return z;
  37 #endif
  38 }