biginteger

问题 I have been staring at this code and cannot figure out what is wrong with it, maybe a fresh pair of eyes could help. public static BigInteger powerOfBigInteger (BigInteger base, BigInteger power){ if (power == BigInteger.valueOf(0)){ return BigInteger.valueOf(1); } if (power == BigInteger.valueOf(1)){ return base; } BigInteger x = BigInteger.valueOf(1); while (x != power ){ base.multiply(base); x.add(BigInteger.valueOf(1)); System.out.println(x + " " + power); return base; } return base; I

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . Improve this question I want to run something like below code so that i would be able to find a divisor for numbers of ~30-40 length without having to check millions of possibilities even up to their square root. What is the fastest possible solution to find a legitimate non

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . Improve this question I want to run something like below code so that i would be able to find a divisor for numbers of ~30-40 length without having to check millions of possibilities even up to their square root. What is the fastest possible solution to find a legitimate non

问题 I need to convert a BigInteger to an unsigned integer encoded in big-endian format but I am having issues since BigInteger.toByteArray returns a signed representation. How can I convert this value to an unsigned format? (Relatively) Helpful Background I am working on some code that uses JNI to have c++ call some Java methods to handle some cryptographic functionality (this is a Microsoft CNG provider that offloads some functionality to Java). I have the public key in Java and the BigInteger

问题 I hope I'm overthinking this and there's an obvious solution. From the API (GET statuses/user_timeline) max_id - Returns results with an ID less than (that is, older than) or equal to the specified ID. "or equal to" means it will include the tweet with ID that I sent as my max_id parameter. -- My question is this: if I store the id of my oldest tweet (from a previous request), how can I subtract 1 from this id to exclude it from being returned in my next request? The obvious solution would be

问题 I hope I'm overthinking this and there's an obvious solution. From the API (GET statuses/user_timeline) max_id - Returns results with an ID less than (that is, older than) or equal to the specified ID. "or equal to" means it will include the tweet with ID that I sent as my max_id parameter. -- My question is this: if I store the id of my oldest tweet (from a previous request), how can I subtract 1 from this id to exclude it from being returned in my next request? The obvious solution would be

问题 I encountered a problem in R when it's performing simple arithmetic for big numbers incorrectly. Can someone explain what's happening, and how to work around? > a <- 51569 > b <- a + 6924851946518374722 > b [1] 6924851946518425600 # problem is visible here already > c <- b - 6924851946518374722 > c [1] 51200 So there's an error of 469 when adding the big number. Why? 回答1: R uses double-precision floating-point to represent values. The precision depends on your machine. On my Intel machine

问题 I wrote the following program for finding the modulus of large Fibonacci's number. This can solve large numbers but fails to compute in cases like fibo_dynamic(509618737,460201239,229176339) where a = 509618737 , b = 460201239 and N = 229176339 . Please help me to make this work. long long fibo_dynamic(long long x,long long y,long long n, long long a[]){ if(a[n]!=-1){ return a[n]; }else{ if(n==0){ a[n]=x; return x; }else if(n==1){ a[n]=y; return y; }else { a[n]=fibo_dynamic(x,y,n-1,a)+fibo

问题 What's the best way to do simple math using int64, BigInt or even float64 values with tensors? I mention that I want to do simple math to say that I don't think that backing the tensor with a String will do the trick (though I'm open to anything at this point). By simple math, I mean add, subtract, multiply, divide and compare. I'm a tensorflow newbie, using version 1.1.2 of tensorflow for javascript in Chrome. Here's an example of Math.PI yielding an incorrect tensor value: Math.PI; // 3

问题 (I am only an indirect user of the GMP-library primarily through swi-prolog and yap. But I am very much interested in fixing this problem.) When performing exponentiations with ridiculously large values, the host-systems or GMP are no longer able to handle the overflows appropriately. I have talked to the developers of above systems, but they do not see an easy fix for this. Is this problem known to other GMP systems/users? How do you handle such overflows? As a sanity check first test the