5.6.7 Testing if an object is in an interval
The contains command determines if an object is in an interval.
-
contains
takes two arguments:
-
I, an interval.
- obj, an object.
- contains(I,obj) returns 1 if
obj is in I; i.e., either obj is a number which
is contained in I or obj is an interval which is
a subset of I. It returns 0 otherwise.
Examples