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Code Issues Releases Wiki Activity

StandardPlugin uses null

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This commit is contained in:
Riley Jones 2017-08-03 23:59:23 -07:00
parent 9d5f9d901c
commit eff7be0204
1 changed files with 52 additions and 21 deletions
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73
src/main/java/org/nwapw/abacus/plugin/StandardPlugin.java
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@ -159,7 +159,10 @@ public class StandardPlugin extends Plugin {
protected NumberInterface applyInternal(NumberInterface[] params) {
if(Thread.currentThread().isInterrupted())
return null;
return FUNCTION_EXP.apply(FUNCTION_LN.apply(params[0]).multiply(params[1]));
NumberInterface check;
if((check = FUNCTION_EXP.apply(FUNCTION_LN.apply(params[0])))!=null&&(check = check.multiply(params[1]))!=null)
return check;
return null;
}
});
/**
@ -173,6 +176,8 @@ public class StandardPlugin extends Plugin {
@Override
protected NumberInterface applyInternal(NumberInterface[] params) {
if(Thread.currentThread().isInterrupted())
return null;
return params[0].multiply((new NaiveNumber(params[0].signum())).promoteTo(params[0].getClass()));
}
};
@ -187,16 +192,19 @@ public class StandardPlugin extends Plugin {
@Override
protected NumberInterface applyInternal(NumberInterface[] params) {
if(Thread.currentThread().isInterrupted())
return null;
NumberInterface maxError = getMaxError(params[0]);
int n = 0;
System.out.println(params[0].signum());
if(params[0].signum() <= 0){
NumberInterface currentTerm = NaiveNumber.ONE.promoteTo(params[0].getClass()), sum = currentTerm;
while(!Thread.currentThread().isInterrupted()&&FUNCTION_ABS.apply(currentTerm).compareTo(maxError) > 0){
NumberInterface check;
while((check = FUNCTION_ABS.apply(currentTerm))!=null && (check.compareTo(maxError) > 0)){
n++;
currentTerm = currentTerm.multiply(params[0]).divide((new NaiveNumber(n)).promoteTo(params[0].getClass()));
sum = sum.add(currentTerm);
if(Thread.currentThread().isInterrupted()||(currentTerm = currentTerm.multiply(params[0]))==null||(currentTerm = currentTerm.divide((new NaiveNumber(n))))==null||(currentTerm = currentTerm.promoteTo(params[0].getClass()))==null||(sum = (sum.add(currentTerm)))==null)
return null;
}
//System.out.println(Thread.currentThread().isInterrupted());
return sum;
}
else{
@ -206,19 +214,23 @@ public class StandardPlugin extends Plugin {
NumberInterface nextNumerator = params[0];
NumberInterface left = params[0].multiply((new NaiveNumber(3)).promoteTo(params[0].getClass()).intPow(params[0].ceiling())), right = maxError;
do{
sum = sum.add(nextNumerator.divide(factorial(params[0].getClass(), n+1)));
NumberInterface check;
if((check = factorial(params[0].getClass(),n+1))==null||(check = nextNumerator.divide(check))==null||(sum = sum.add(check))==null)
return null;
n++;
nextNumerator = nextNumerator.multiply(params[0]);
left = left.multiply(params[0]);
if((nextNumerator = nextNumerator.multiply(params[0]))==null)
return null;
if((left = left.multiply(params[0]))==null)
return null;
NumberInterface nextN = (new NaiveNumber(n+1)).promoteTo(params[0].getClass());
right = right.multiply(nextN);
if((right = right.multiply(nextN))==null)
return null;
//System.out.println(left + ", " + right);
}
while(!Thread.currentThread().isInterrupted()&&left.compareTo(right) > 0);
//System.out.println(n+1);
//System.out.println(Thread.currentThread().isInterrupted());
if(Thread.currentThread().isInterrupted())
return left;
if(Thread.currentThread().isInterrupted())
return null;
return sum;
}
}
@ -234,26 +246,31 @@ public class StandardPlugin extends Plugin {
@Override
protected NumberInterface applyInternal(NumberInterface[] params) {
if(Thread.currentThread().isInterrupted())
return null;
NumberInterface param = params[0];
int powersOf2 = 0;
while (!Thread.currentThread().isInterrupted()&&FUNCTION_ABS.apply(param.subtract(NaiveNumber.ONE.promoteTo(param.getClass()))).compareTo((new NaiveNumber(0.1)).promoteTo(param.getClass())) >= 0) {
if (param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())).signum() == 1) {
NumberInterface check;
while (!Thread.currentThread().isInterrupted()&&(check = FUNCTION_ABS.apply(param.subtract(NaiveNumber.ONE.promoteTo(param.getClass()))))!=null&&(check.compareTo((new NaiveNumber(0.1)).promoteTo(param.getClass()))) >= 0) {
if ((check = param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())))!=null&&check.signum() == 1) {
param = param.divide(new NaiveNumber(2).promoteTo(param.getClass()));
powersOf2++;
if (param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())).signum() != 1) {
if ((check = param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())))!=null||check.signum() != 1) {
break;
//No infinite loop for you.
}
} else {
param = param.multiply(new NaiveNumber(2).promoteTo(param.getClass()));
powersOf2--;
if (param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())).signum() != -1) {
if ((check = param.subtract(NaiveNumber.ONE.promoteTo(param.getClass())))!=null||check.signum() != 1) {
break;
//No infinite loop for you.
}
}
}
return getLog2(param).multiply((new NaiveNumber(powersOf2)).promoteTo(param.getClass())).add(getLogPartialSum(param));
if(!Thread.currentThread().isInterrupted()&&(check = getLog2(param).multiply((new NaiveNumber(powersOf2)).promoteTo(param.getClass())))!=null&&(check = check.add(getLogPartialSum(param)))!=null)
return check;
return null;
}
/**
@ -263,16 +280,22 @@ public class StandardPlugin extends Plugin {
* @return the partial sum.
*/
private NumberInterface getLogPartialSum(NumberInterface x) {
if(Thread.currentThread().isInterrupted())
return null;
NumberInterface maxError = getMaxError(x);
x = x.subtract(NaiveNumber.ONE.promoteTo(x.getClass())); //Terms used are for log(x+1).
NumberInterface currentNumerator = x, currentTerm = x, sum = x;
int n = 1;
while (!Thread.currentThread().isInterrupted()&&FUNCTION_ABS.apply(currentTerm).compareTo(maxError) > 0) {
NumberInterface check;
while (!Thread.currentThread().isInterrupted()&&(check = FUNCTION_ABS.apply(currentTerm))!=null&&check.compareTo(maxError) > 0) {
n++;
currentNumerator = currentNumerator.multiply(x).negate();
if((currentNumerator = currentNumerator.multiply(x))!=null&&(currentNumerator = currentNumerator.negate())!=null)
return null;
currentTerm = currentNumerator.divide(new NaiveNumber(n).promoteTo(x.getClass()));
sum = sum.add(currentTerm);
}
if(Thread.currentThread().isInterrupted())
return null;
return sum;
}
@ -282,6 +305,8 @@ public class StandardPlugin extends Plugin {
* @return the value of log(2) with the appropriate precision.
*/
private NumberInterface getLog2(NumberInterface number) {
if(Thread.currentThread().isInterrupted())
return null;
NumberInterface maxError = getMaxError(number);
//NumberInterface errorBound = (new NaiveNumber(1)).promoteTo(number.getClass());
//We'll use the series \sigma_{n >= 1) ((1/3^n + 1/4^n) * 1/n)
@ -295,8 +320,12 @@ public class StandardPlugin extends Plugin {
a = a.divide((new NaiveNumber(3)).promoteTo(number.getClass()));
b = b.divide((new NaiveNumber(4)).promoteTo(number.getClass()));
c = NaiveNumber.ONE.promoteTo(number.getClass()).divide((new NaiveNumber(n)).promoteTo(number.getClass()));
sum = sum.add(a.add(b).multiply(c));
NumberInterface check;
if(a!=null&&(check = a.add(b))!=null&&(check = check.multiply(c))!=null&&(sum = sum.add(check))!=null)
return null;
}
if(Thread.currentThread().isInterrupted())
return null;
return sum;
}
};
@ -370,6 +399,8 @@ public class StandardPlugin extends Plugin {
}
public static NumberInterface factorial(Class<? extends NumberInterface> numberClass, int n){
if(Thread.currentThread().isInterrupted())
return null;
if(!factorialLists.containsKey(numberClass)){
factorialLists.put(numberClass, new ArrayList<>());
factorialLists.get(numberClass).add(NaiveNumber.ONE.promoteTo(numberClass));
@ -382,7 +413,7 @@ public class StandardPlugin extends Plugin {
}
}
if(Thread.currentThread().isInterrupted())
return NaiveNumber.ONE.promoteTo(numberClass);
return null;
return list.get(n);
}