Functions and CALL Routines |
Computes the logarithm of the PERM function, which
is the logarithm of the number of permutations of n objects,
with the option of including r number of elements.
- n
-
is an integer that represents the total number of elements
from which the sample is chosen.
- r
-
is an optional integer value that represents the number
of chosen elements. If r is omitted, the function returns the
factorial of n.
Restriction: |
r n |
The LPERM function computes the logarithm of the PERM
function.
The following statements produce these
results:
SAS Statements |
Results |
x=lperm(5000,500);
put x; |
4232.7715946 |
y=lperm(100,10);
put y; |
45.586735935 |
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