_dawson _erfci _erfi _fresc _fress

_fresc() double _fresc ( double  x ) Fresnel integral C(x) Purpose fresc computes the Fresnel integral C(x) = ∫cos(π/2 t^2) dt [0, x] Returns Fresnel integral C(x). Parameters [in] x Argument x. Error handling Range error (ERANGE) may occur.