when i test this function with base16 :F0F0F0F0F0F0F0, it return right result = 67818912035696880 BUT when i test with base16: F0F0F0F0F0F0F0F0, it returns wrong result: 17361641481138401580 which right result must be 17361641481138401520 please help me! Answer Math.pow delivers a double, 8 bytes. So from some huge double value, it becomes imprecise in the less significant digits. You could have used
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Tag: biginteger
why is my primality test failing so often when randomizing a BigInteger?
I wasn’t able to get true for both p and q, most of the results is both false or rarely p is true but q is false, why wouldn’t this test ever be true for both p and q? BigInteger bitSize100 = new …
Java BigInteger alternative
Is there a way to improve BigInteger performance with caching? When you operate on BigInteger it always creates a new BigInteger. For example, when you multiply two big integers, a new BigInteger is created to host the result. I want to use some mutable version of a BigInteger that will update one of the fields with the result. Answer There
is there anyway to convert from Double to BigInteger?
Is there anyway to convert from double value to BigInteger? double doubleValue = 64654679846513164.2; BigInteger bigInteger = (BigInteger) doubleValue; I try to cast it but it didn’t work.
Converting from Integer, to BigInteger
I was wondering if there was any way to convert a variable of type Integer, to BigInteger. I tried typecasting the Integer variable, but i get an error that says inconvertible type. Answer The method you want is BigInteger#valueOf(long val). E.g., Making a String first is unnecessary and undesired.
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