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Add comments for FUNCTION_SIN and intFactorial in StandardPlugin.

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This commit is contained in:
Arthur Drobot 2017-08-02 15:13:04 -07:00
parent 7fa28c4ebf
commit 921c176317
1 changed files with 10 additions and 0 deletions
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10
src/main/java/org/nwapw/abacus/plugin/StandardPlugin.java
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@ -282,6 +282,9 @@ public class StandardPlugin extends Plugin {
}
};
/**
* The sine function (the argument is interpreted in radians).
*/
public static final Function FUNCTION_SIN = new Function() {
@Override
protected boolean matchesParams(NumberInterface[] params) {
@ -359,6 +362,13 @@ public class StandardPlugin extends Plugin {
}
/**
* A factorial function that uses memoization for each number class; it efficiently
* computes factorials of non-negative integers.
* @param numberClass type of number to return.
* @param n non-negative integer.
* @return a number of numClass with value n factorial.
*/
public static NumberInterface factorial(Class<? extends NumberInterface> numberClass, int n){
if(!factorialLists.containsKey(numberClass)){
factorialLists.put(numberClass, new ArrayList<NumberInterface>());