FRESNEL_S _ _ _ _ _ _ _ _ _ _ _ _ operator
The Fresnel_S operator represents Fresnel's Sine Integral function.
int(sin(t^2*pi/2),t,0,x); fresnel_s(x) on rounded; fresnel_s(2.1); 0.374273359378
The operator Fresnel_S has a limited numeric evaluation o f large values of its argument.