I know that there are other questions similar to this one, however the following question pertains to arbitrary-precision random number generation in C for use in Monte Carlo simulation. How can we generate good quality arbitrary-precision random numbers in C, when atmospheric noise isn't always available, without relying on disk i/o or...
Greetings, I need to multiply two extremely long integer values stored in a text file (exported via GMP (MPIR, to be exact), so they can be any in any base). Now, I would usually just import these integers via the mpz_inp_str() function and perform the multiplication in RAM, however, these values are so long that I can't really load the...
Greetings, my program exits with the code 3. No error messages, no exceptions, and the exit is not initiated by my code. The problem occurs when I am trying to read extremely long integer values from a text file (the text file is present and correctly opened, with successful prior reading). I am using very large amounts of memory (...
While i m using gmp.h header file. i need a fuction which takes inputs of type mpz_t and return mpz_t type too. I m very beginner of using gmp.h So, Here is snaps follows of my approached code.... mpz_t sum_upto(mpz_t max) { mpz_t sum; mpz_init(sum); mpz_init(result); for(int i=0;i<=max-1;i++) ...
Hi, I'm trying to implement long division for bignums. I can't use a library like GMP unfortunately due to the limitations of embedded programming. Besides, i want the intellectual exercise of learning how to implement it. So far i've got addition and multiplication done using any-length arrays of bytes (so each byte is like a base-256 d...
2^64 is still far from the "infinity" my ram/hard drive can handle... First I wonder how GMP works with memory/processor since it does some kind of shady optimisations... I was also wondering if there is a way of storing an integer (unsigned, it's easier) on an arbitrary number of bytes. For example, on 50 bytes, I would have a cap of ...
I am trying to use GMP in a C++ program on windows, and I compiled it successfully with Cygwin, and I get an .a file, which is linux's version of a .lib file. Is there a way I can use this with the Visual C++ compiler, or is there a way to compile GMP for windows to produce a .lib file? ...
I have a problem in which I need to be prepared to explore a larger range of numbers than an unsized long long can represent (the range being represented by 3^(n*n) ). I have been advised by this community to use GMP for multiple-precision numbers. Since I need to iterate through the range one number at a time, I need a way to increment ...
It seems that GMP provides only string serialization of the mpf (floating point) type: mpf_get_str(), mpf_class::get_str() The mpz (integer) type has an additional interface for raw bytes: mpz_out_raw() http://gmplib.org/manual/Function-Index.html Am I missing something? Does anyone know of another library that can serialize GMP flo...
I am trying to cross-compile GCC on Mac OS 10.5.7. I used this command to configure GCC after installing GMP, MPFR, and MPC: ../gcc-4.5.0/configure --target=$i586-elf --prefix=/usr/local/cross \ --disable-nls \ --enable-languages=c,c++,fortran,java,objc,obj-c++,treelang,ada \ --without-headers --with-libiconv-prefix=/opt/loc...
I have some code that uses libgmp. At some point the user may request a factorial of a very large number. Unfortunately, this results in libgmp raising an abort signal. For example the following code: #include <cmath> #include <gmp.h> #include <iostream> int main() { mpz_t result; mpz_init(result); mpz_fac_ui(result, 209...
I'm struggling with the following bit of code(/challenge) and I was wondering what would be the best way to solve it. Pseudo(-like) code If I understand the code correctly it does: var val = 1 foreach (char in firstargument): val = val * ((ascii)char + 27137) if (val == 9215629587130840783880821452128359619700556749382698126651526...
Downloaded and installed latest MinGW yesterday, and GMP 4.3.2 $ ./configure ran just fine. On running make check, The first problem was $ make check makefile:15: *** missing separator. Stop. OK, so, I put the TAB char at the beginning of line 15. Next problem is $ make check makefile:15: *** commands commence before first targe...
I would like to compile my code in CDT: #include <iostream> #include <gmpxx.h> using namespace std; int main (void) { mpz_class a, b, c; a = 1234; b = "-5678"; c = a+b; cout << "sum is " << c << "\n"; cout << "absolute value is " << abs(c) << "\n"; cin >> a; return 0; } When I compiled, there were som...
According to the GMP documentation here: Function: unsigned long int mpz_remove (mpz_t rop, mpz_t op, mpz_t f) Remove all occurrences of the factor f from op and store the result in rop. The return value is how many such occurrences were removed. So the mpz_remove function should be able to be used to answer the titled...
Hello. I'm working with gnump and have a function that must return mpz_t. So I have to use raw pointers to return a value. I allocate space with new for pointer and send it as a parameter in my function. I think it is better to use smart pointers. But I didn't work with them before. I read the manual but still can't understand how to ...