Formula to calculate working days

Formula to calculate working days

How can this formula that calculates working days from ANYDATEFIELD to TODAY() be adjusted to Zoho CRM formula functions?


CASE(MOD( ANYDATEFIELD - DATE(1985,6,24),7),
0 , CASE( MOD( TODAY() - ANYDATEFIELD ,7),1,1,2,2,3,3,4,4,5,4,6,4,0),
1 , CASE( MOD( TODAY() - ANYDATEFIELD ,7),1,1,2,2,3,3,4,3,5,3,6,4,0),
2 , CASE( MOD( TODAY() - ANYDATEFIELD ,7),1,1,2,2,3,2,4,2,5,3,6,4,0),
3 , CASE( MOD( TODAY() - ANYDATEFIELD ,7),1,1,2,1,3,1,4,2,5,3,6,4,0),
4 , CASE( MOD( TODAY() - ANYDATEFIELD ,7),1,0,2,0,3,1,4,2,5,3,6,4,0),
5 , CASE( MOD( TODAY() - ANYDATEFIELD ,7),1,0,2,0,3,1,4,2,5,3,6,4,0),
6 , CASE( MOD( TODAY() - ANYDATEFIELD ,7),1,0,2,1,3,2,4,3,5,4,6,4,0),
777)
+
(FLOOR(( TODAY() - ANYDATEFIELD )/7)*5)


In case it is impossible, is there a formula that can be used to calculate the amount of working days from ANYDATEFIELD up TODAY()?