validate_amount_decimals

swift_mt_message::fields::swift_utils

Function validate_amount_decimals 

Source 
pub fn validate_amount_decimals(
    amount: f64,
    currency: &str,
) -> Result<(), ParseError>
Expand description

Validate amount decimal precision for a specific currency (C03 validation)

SWIFT network validation rule C03 requires that the number of decimal places in an amount must not exceed the maximum allowed for the currency.

§Arguments

  • amount - The amount value to validate
  • currency - ISO 4217 currency code

§Returns

Ok(()) if decimal precision is valid, Err(ParseError) if exceeds limit

§Errors

Returns ParseError::InvalidFormat with C03 error if decimal precision exceeded

§Examples

use swift_mt_message::fields::swift_utils::validate_amount_decimals;

validate_amount_decimals(100.50, "USD").unwrap(); // Ok - 2 decimals allowed
validate_amount_decimals(100.0, "JPY").unwrap();  // Ok - 0 decimals allowed
assert!(validate_amount_decimals(100.50, "JPY").is_err()); // JPY allows 0 decimals only
assert!(validate_amount_decimals(100.5055, "BHD").is_err()); // BHD allows 3 decimals max