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make amount.ml a lib

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swrup 2025-10-13 04:15:58 +02:00
parent e37802e9dc
commit d086bd7e12
2 changed files with 10 additions and 5 deletions
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src/amount.ml
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@ -17,8 +17,9 @@ type t = {
fraction: Int64.t;
}
let ( let* ) o f = match o with Ok v -> f v | Error _ as e -> e
let make ~sign ~currency ~value ~fraction =
let open Syntax in
let value_upper_bound = Z.(pow (of_int 2) 52) |> Z.to_int64 in
let fraction_upper_bound = Int64.of_int 99_999_999 in
let* () = if value < Int64.zero then Error "value is negative" else Ok () in