Returns the number of decimals the asset uses.

Additional Information

e.g. 8, means to divide the coins amount by 100000000 to get its user representation.

Arguments

• decimals_key: [StorageKey<StorageMap<AssetId, u8>>] - The location in storage which the StorageMap that stores the decimals of assets is stored.
• asset: [AssetId] - The asset of which to query the decimals.

Returns

• [Option] - The decimal precision used by asset.

Number of Storage Accesses

• Reads: 1

Examples

use sway_libs::asset::base::_decimals;

storage {
    decimals: StorageMap<AssetId, u8> = StorageMap {},
}

fn foo(asset: AssedId) {
    let decimals = _decimals(storage.decimals, asset);
    assert(decimals.unwrap_or(0u8) == 8);
}