math/w_coshl_compat.c

   1 /* w_acoshl.c -- long double version of w_acosh.c.
   2  */
   3
   4 /*
   5  * ====================================================
   6  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   7  *
   8  * Developed at SunPro, a Sun Microsystems, Inc. business.
   9  * Permission to use, copy, modify, and distribute this
  10  * software is freely granted, provided that this notice
  11  * is preserved.
  12  * ====================================================
  13  */
  14
  15 /*
  16  * wrapper coshl(x)
  17  */
  18
  19 #include <math.h>
  20 #include <math_private.h>
  21 #include <math-svid-compat.h>
  22 #include <libm-alias-ldouble.h>
  23
  24 #if LIBM_SVID_COMPAT
  25 long double
  26 __coshl (long double x)
  27 {
  28         long double z = __ieee754_coshl (x);
  29         if (__builtin_expect (!isfinite (z), 0) && isfinite (x)
  30             && _LIB_VERSION != _IEEE_)
  31                 return __kernel_standard_l (x, x, 205); /* cosh overflow */
  32
  33         return z;
  34 }
  35 libm_alias_ldouble (__cosh, cosh)
  36 #endif