Function choose_curve

tests/binary/fn_pointers/src/main.rs:73–81

(which: i32)

}

fn choose_curve(which: i32) -> fn(f64) -> f64 {
    if which == 0 {
        constant
    } else if which == 1 {
        linear
    } else {
        square
    }
}

fn linear(x: f64) -> f64 {
    2.0 * x + 3.0