SS_OPTION_DISALLOW_CONSTANT_SAMPLE_TIME - Disallow constant sample time inheritance

Note   If the S-function declares the number of sample times as PORT_BASED_SAMPLE_TIMES it will not inherit a constant sample time unless it specifies the SS_OPTION_ALLOW_CONSTANT_PORT_SAMPLE_TIME option.

If the S-function specifies this option and inherits a constant sample time, i.e., a sample time of inf, the Real-Time Workshop product determines how to generate code for the block based on if the block is invariant.

A block is invariant if all of its ports' signals are invariant. A signal is invariant if it has a constant value during the entire simulation. A constant block sample time does not guarantee all the ports' signals are invariant. See Inlining Invariant Signals in the "Real-Time Workshop User's Guide" for more information.

If the block is not invariant, the Real-Time Workshop product generates code only in the model_initialize function. If the block is invariant, the Real-Time Workshop product eliminates the block's code altogether.