compound if alternatives

[Huisingh, Larry R]

You only need to compare against t1, t2, etc. one time each.  See below
if c < t1 then
   do1
else if c < t2 then # >=t1 is implied
   do2
else if c < t3 then # >=t2 is implied
   do3
...
else if c < t7 then
   do7
else
   # We already know that it is not < t7 because we are in the else clause
   # Therefore c must be >= t7
   do8
end if

This should do what you need.

Larry Huisingh

> I need to repeatedly check within which of predefined time periods 
> the current moment is. Since this affects overall performance (but is 
> necessary), I am trying to see whether there is an alternative to a 
> compound if to speed this up.
> 
> t1, t2, t3, ... , t7 -- time interval boundaries in seconds
> c - current time in seconds
> 
> if c < t1 then
>    do1
> else if c >= t1 and c < t2 then
>    do2
> else if c >= t2 and c < t3 then
>    do3
> ...
> else if c >= t7 then
>    do8
> end if
>