1  /* Optimizations by Ulrich Drepper <drepper@gmail.com>, 2011 */
       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  /*
      14   * wrapper cosh(x)
      15   */
      16  
      17  #include <math.h>
      18  #include <math_private.h>
      19  #include <math-svid-compat.h>
      20  #include <libm-alias-double.h>
      21  
      22  #if LIBM_SVID_COMPAT
      23  double
      24  __cosh (double x)
      25  {
      26  	double z = __ieee754_cosh (x);
      27  	if (__builtin_expect (!isfinite (z), 0) && isfinite (x)
      28  	    && _LIB_VERSION != _IEEE_)
      29  		return __kernel_standard (x, x, 5); /* cosh overflow */
      30  
      31  	return z;
      32  }
      33  libm_alias_double (__cosh, cosh)
      34  #endif