Function round_f64

crates/virtual-machine/src/cpu/alu.rs:249–258

(val: f64, rm: u8)

}

pub fn round_f64(val: f64, rm: u8) -> f64 {
    match rm {
        RM_RNE => val.round_ties_even(),
        RM_RTZ => val.trunc(),
        RM_RDN => val.floor(),
        RM_RUP => val.ceil(),
        RM_RMM => val.round(),
        _ => val,
    }
}

// --- f32 rounding helpers: next representable value up/down ---