truncate_value

lsst.ts.mtmount.truncate_value(value, min_value, max_value, descr)

Truncate a value, if necessary.

Returns:

• A tuple

• - truncated_value (one of value, min_value, or max_value, as appropriate.)

• - message in format f”{descr} from {value (0.2f} to {truncated_value:0.2f}”) – or “” if the value is not truncated.

Raises:

ValueError – If min_value >= max_value.