SciPy

scipy.special.modfresnelp

scipy.special.modfresnelp(x) = <ufunc 'modfresnelp'>

Modified Fresnel positive integrals

Returns :

fp :

Integral F_+(x): integral(exp(1j*t*t),t=x..inf)

kp :

Integral K_+(x): 1/sqrt(pi)*exp(-1j*(x*x+pi/4))*fp