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| Functions and CALL Routines |
LPERM Function
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.
| Category: | Combinatorial |
| Syntax | |
| Arguments | |
| Comparisons | |
| Examples | |
| See Also |
Syntax |
| LPERM(n<,r>) |
Arguments
- 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 ![[le]](../../../../common/63294/HTML/default/images/le.gif)
n
| Comparisons |
The LPERM function computes the logarithm of the PERM function.
| Examples |
The following statements produce these results:
| SAS Statements | Results |
|---|---|
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x=lperm(5000,500);
put x; |
4232.7715946 |
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y=lperm(100,10);
put y; |
45.586735935 |
| See Also |
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Functions: |
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