eccodes/definitions/param_limits.def

constant default_min_val = -1e9 : long_type, hidden;
constant default_max_val = +1e9 : long_type, hidden;

concept param_value_min(default_min_val) {
    0  = { paramId=167; }
} : long_type, hidden;
concept param_value_max(default_max_val) {
    373 = { paramId=167; }
} : long_type, hidden;