Find the interval which contains the given number.

Input parameters:

1. In → Numeric intervals to search.
2. Nm → Number to search with.
3. Mt → Search method to apply.
   • 0 → First
   • 1 → Last
   • 2 → Shortest
   • 3 → Longest
   • 4 → Earliest Start
   • 5 → Latest Start
   • 6 → Earliest End
   • 7 → Latest End
   • 8 → Innermost
   • 9 → Outermost

Output parameters:

1. Ix → Index of found interval, or -1 if no interval contains the number.
2. Nr → Index of the interval closest to the number, or -1 if one of the intervals actually contains the number.