scipy.special.sici

scipy.special.sici(x[, out1, out2]) = <ufunc 'sici'>

sici(x)

Sine and cosine integrals

Returns:

si :

integral(sin(t)/t, t=0..x)

ci :

eul + ln x + integral((cos(t) - 1)/t, t=0..x) where eul is Euler’s constant.