gistfile1.txt

const TOINT: f32 = 1.0f32 / f32::EPSILON;

fn foo(x: f32) -> f32 {
    let u = x.to_bits();
    let e = u >> 23 & 0xff;
    if e >= 0x7f + 23 {
        return x;
    }
    let s = u >> 31;
    let y = if s == 1 { x - TOINT + TOINT } else { x + TOINT - TOINT };
    if y == 0.0 {
        if s == 1 {
            -0f32
        } else {
            0f32
        }
    } else {
        y
    }
}