[code]
fn negate_f32(x: f32) -> f32 {
    return -x;
}

fn negate_f64(x: f64) -> f64 {
    return -x;
}

[harness]
extern float negate_f32(float x);
extern double negate_f64(double x);

int main() {
    if (negate_f32(3.5f) != -3.5f) return 1;
    if (negate_f64(-4.2) != 4.2) return 2;
    return 0;
}

[expected_return_code]
0