#include "libm.h"

#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
long double sinhl(long double x) {
  return sinh(x);
}
#elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
long double sinhl(long double x) {
  union ldshape u = {x};
  unsigned ex = u.i.se & 0x7fff;
  long double h, t, absx;

  h = 0.5;
  if (u.i.se & 0x8000)
    h = -h;
  /* |x| */
  u.i.se = ex;
  absx = u.f;

  /* |x| < log(LDBL_MAX) */
  if (ex < 0x3fff + 13 || (ex == 0x3fff + 13 && u.i.m >> 32 < 0xb17217f7)) {
    t = expm1l(absx);
    if (ex < 0x3fff) {
      if (ex < 0x3fff - 32)
        return x;
      return h * (2 * t - t * t / (1 + t));
    }
    return h * (t + t / (t + 1));
  }

  /* |x| > log(LDBL_MAX) or nan */
  t = expl(0.5 * absx);
  return h * t * t;
}
#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
// TODO: broken implementation to make things compile
long double sinhl(long double x) {
  return sinh(x);
}
#endif