Function inanis::state::movescan::scan_pawn_moves_single_push

fn scan_pawn_moves_single_push(
    board: &Board,
    moves: &mut Moves,
    index: usize,
    evasion_mask: u64
) -> usize

Generates all possible single pushes for the pawns at the position specified by board, stores them into moves list (starting from index) and returns index of the first free slot. Use evasion_mask with value different than u64::MAX to restrict generator to the specified squares (useful during checks).