In some cases, the Fixed-Point Tool does not propose data types for the system under design, or for one or more blocks within the system.
The Fixed-Point Tool bases its data type proposition on range information collected through simulation, derivation, and design ranges that you provide. Before proposing data types, you must collect range information which the Fixed-Point Tool uses to propose data types.
To collect range information, in the Fixed-Point Tool, select the desired Range Collection Mode in the Setup pane, and then click Collect Ranges.
Blocks with inherited output data types use internal block rules to determine
the output data type of the block. To enable proposals for results that specify
an inherited output data type, in the Fixed-Point Tool, under
Settings, set the Convert inherited
types setting to
If this setting is set to
No, the Fixed-Point Tool
marks the proposal for these blocks as