sequential_integration

Function calculate_double_integral_simpson

Source 
pub fn calculate_double_integral_simpson<E: Fn(f64, f64) -> f64, F1: Fn(f64) -> f64, F2: Fn(f64) -> f64>(
    equation: E,
    first_integral_begin: f64,
    first_integral_end: f64,
    first_integral_step: f64,
    second_integral_begin: F1,
    second_integral_end: F2,
    second_integral_step: f64,
) -> Result<f64, Error>