Function newrelic_sys::newrelic_add_attribute_double

pub unsafe extern "C" fn newrelic_add_attribute_double(
    transaction: *mut newrelic_txn_t, 
    key: *const c_char, 
    value: f64
) -> bool

@brief Add a custom double attribute to a transaction.

Given an active transaction, this function appends a double attribute to the transaction.

@param [in] transaction An active transaction. @param [in] key The name of the attribute. @param [in] value The double value of the attribute.

@return true if successful; false otherwise.