Detect data change from specified value in test step
hasChangedFrom(
returns u,A)true if the value of u changes from the
value A. Otherwise, hasChangedFrom returns
false.
Detect if x has changed from a value of 15. This statement returns
true when x had a value of 15 in the previous time
step and has a value not equal to 15 in the current time step.
hasChangedFrom(x,15)
hasChangedFrom statements can be used in the Test Sequence and Test
Assessment blocks and in Stateflow® charts.