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  1. /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
  2. /* w_coshf.c -- float version of w_cosh.c.
  3.  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
  4.  */
  5.  
  6. /*
  7.  * ====================================================
  8.  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
  9.  *
  10.  * Developed at SunPro, a Sun Microsystems, Inc. business.
  11.  * Permission to use, copy, modify, and distribute this
  12.  * software is freely granted, provided that this notice
  13.  * is preserved.
  14.  * ====================================================
  15.  */
  16.  
  17. #if defined(LIBM_SCCS) && !defined(lint)
  18. static char rcsid[] = "$Id: w_coshf.c,v 1.1 1994/08/10 20:33:56 jtc Exp $";
  19. #endif
  20.  
  21. /*
  22.  * wrapper coshf(x)
  23.  */
  24.  
  25. #include "math.h"
  26. #include "math_private.h"
  27.  
  28. #ifdef __STDC__
  29.         float coshf(float x)            /* wrapper coshf */
  30. #else
  31.         float coshf(x)                  /* wrapper coshf */
  32.         float x;
  33. #endif
  34. {
  35. #ifdef _IEEE_LIBM
  36.         return __ieee754_coshf(x);
  37. #else
  38.         float z;
  39.         z = __ieee754_coshf(x);
  40.         if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
  41.         if(fabsf(x)>(float)8.9415985107e+01) { 
  42.                 /* cosh overflow */
  43.                 return (float)__kernel_standard((double)x,(double)x,105);
  44.         } else
  45.             return z;
  46. #endif
  47. }
  48.