newlib-cygwin/winsup/cygwin/math/ccosh.def.h

/*
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*/

__FLT_TYPE __complex__ __cdecl
__FLT_ABI(ccosh) (__FLT_TYPE __complex__ z)
{
  __complex__ __FLT_TYPE ret;
  __FLT_TYPE s_x, c_x;
  int r_class = fpclassify (__real__ z);
  int i_class = fpclassify (__imag__ z);

  if (r_class == FP_NAN)
  {
    __real__ ret = __FLT_NAN;
    __imag__ ret = __imag__ z == __FLT_CST(0.0) ? __imag__ z : __FLT_NAN;
    return ret;
  }

  if (r_class == FP_INFINITE)
  {
    if (i_class == FP_ZERO)
    {
      __real__ ret = __FLT_HUGE_VAL;
      __imag__ ret = __imag__ z * __FLT_ABI(copysign) (__FLT_CST(1.0), __real__ z);
      return ret;
    }

    if (i_class == FP_NAN || i_class == FP_INFINITE)
    {
      __real__ ret = __FLT_HUGE_VAL;
      __imag__ ret = __FLT_NAN + __FLT_NAN;
      return ret;
    }

    __FLT_ABI(sincos) (__imag__ z, &s_x, &c_x);

    __real__ ret = __FLT_ABI(copysign) (__FLT_HUGE_VAL, c_x);
    __imag__ ret = (__FLT_ABI(copysign) (__FLT_HUGE_VAL, s_x) * __FLT_ABI(copysign) (__FLT_CST(1.0), __real__ z));
    return ret;
  }

  if (i_class == FP_NAN || i_class == FP_INFINITE)
  {
    __imag__ ret = __real__ z == __FLT_CST(0.0) ? __FLT_CST(0.0) : __FLT_NAN;
    __real__ ret = __FLT_NAN + __FLT_NAN;
    return ret;
  }

  __FLT_ABI(sincos) (__imag__ z, &s_x, &c_x);

  __real__ ret = __FLT_ABI(cosh) (__real__ z) * c_x;
  __imag__ ret = __FLT_ABI(sinh) (__real__ z) * s_x;
  return ret;
}