Function spl_token::instruction::initialize_mint

pub fn initialize_mint(
    token_program_id: &Pubkey,
    mint_pubkey: &Pubkey,
    mint_authority_pubkey: &Pubkey,
    freeze_authority_pubkey: Option<&Pubkey>,
    decimals: u8
) -> Result<Instruction, ProgramError>

Creates a InitializeMint instruction.