Canister called `ic0.trap` with message: 'losing precision'

Developers Motoko
1

What is this error? How to correct it?

Canister called `ic0.trap` with message: 'losing precision'.

Suspected code:

        switch(await CyclesLedger.icrc1_transfer({
            to = {owner = Principal.fromActor(this); subaccount = null};
            fee = null;
            memo = null;
            from_subaccount = ?(Principal.toBlob(user));
            created_at_time = ?(Nat64.fromNat(Int.abs(Time.now())));
            amount = Int.abs(Float.toInt(Float.fromInt(amountToMove) * (1.0 - env.revenueShare)));
        })) {
            case (#Err e) {
                Debug.trap("transfer failed: " # debug_show(e));
            };
            case (#Ok _) {};
        };
        // Pay to the vendor (TODO: Ensure no double fee later.)
        switch(await CyclesLedger.icrc1_transfer({
            to = {owner = revenueRecipient; subaccount = null};
            fee = null;
            memo = null;
            from_subaccount = ?(Principal.toBlob(user));
            created_at_time = ?(Nat64.fromNat(Int.abs(Time.now())));
            amount = Int.abs(Float.toInt(Float.fromInt(amountToMove) * env.revenueShare));
        })) {
            case (#Err e) {
                Debug.trap("transfer failed: " # debug_show(e));
            };
            case (#Ok _) {};
        };

env.revenueShare == 0.05.

2

did you try hardcoding the value instead of using the .env?
also could be, multiple data type conversions in Motoko often leads to these kind of errors

3

I use env/lib.mo module. That’s hardcoding.

“also could be, multiple data type conversions in Motoko often leads to these kind of errors” - no idea what you mean.

4

I mean hardcoding the float, and with data conversions I mean that sometimes (or often times) you have a float that you need to convert to Nat or Int or viceversa. But idk I’m just guessing based on your code.