Break python long into limbs
I modified your unpack() and it appears to work for me. If you still get an error, please post the full error. >>> import gmpy2 >>> >>> def unpack(x, b): ... try: ... return [x for x in gmpy2.unpack(gmpy2.mpz(x), b)] ... except NameError: ... b = 2 ** b ......
Building GCC with MPFR, GMP and MPC
For most use cases I believe that option 2 is just as good as option 1. However, I can see a few situations in which one would want to do it manually. A package maintainer wants to build separately as they want separate packages for mpfr et al. Someone who...
Why is my C program slower than the Haskell equivalent?
Play ping-pong. You have two variables a and b and a temporary t. You add and put the result into t, then you copy b to a and t to b. Instead alternate between adding b to a and adding a to b. The final result is either in a...
GMP mpf_class precision lower than expected?
Use a std::string instead of number literal. Any value of the format aaa.bbb is treated as a double (limited precision) and with f suffix as float (limited precision again). In your case it is probably treated as double. const std::string number = "3.141592653589793238462643383279502884197169399375105820974944592307816406286"; mpz_class pi2(number); ...
undefined reference to `__imp___gmpz_init', building GMP program on Cygwin
gcc,compiler-errors,cygwin,gmp
This fixed it: gcc test.c -lgmp. I just put -lgmp last. This seems to be something particular to Cygwin, I tried it with both Clang and gcc-4.9 on OS X and they don't care about the order. As for the strange behavior with the dll.a file, this is because some...
Convert string to mpz_t in C
In the online manual: https://gmplib.org/manual/Assigning-Integers.html#Assigning-Integers The function mpz_set_str is probably what you are looking for....
segmentation fault when calling MPF function
private variables are not initialised, so they can have any value after the start of the parallel section. Initialising a value inside the parallel block can work, but often isn't efficient. Usually a better way is to use firstprivate instead of private, which will initialise variables with the value they...
Precision loss with GMP
c++,c,precision,floating-point-precision,gmp
From the manual page: Function: void mpf_init (mpf_t x) Initialize x to 0. Normally, a variable should be initialized once only or at least be cleared, using mpf_clear, between initializations. The precision of x is undefined unless a default precision has already been established by a call to mpf_set_default_prec. There's...
Possible side effects of doing a typedef of a struct to an array of one element in C
c,typedef,gmp,ruby-c-extension
Passing an array to a function let's the array decay to a pointer to it's 1st element. One can achieve the same effect by applying the Address-Of operator & to a simple variable of the same type as the array's elements. Examples: struct S { int i; float f; };...
Installing gmpy on OSX - mpc.h not found
I'm the maintainer for gmpy2. I don't have access to a Mac so I can't test OSX builds. I assume you've also installed mpfr since it is a prerequisite of mpc. Where are the development files (i.e. gmp.h, mpfr.h, and mpc.h) located? Instead of installing via pip, can you try...
c++ GMP mpz_init() causes Segmentation Fault 11
I was trying to debug your code using gdb and it gave me a segfault at line mpz_inits(l, rand). Then I modified that line and now it does not give a segfault. I will see if I can find a reason for the segfault. #include <iostream> #include "gmp.h" void makeprime...
Problems building GMP 4.3
debian,build-process,autoconf,gmp
This page explains that to use the repository, you need to run .bootstrap. However, it is much easier to download an official release from one of the GNU mirrors. Also, please make sure you cannot use a more recent release, there were few incompatible changes.
Read mpq_t from a binary file
Use gmp_fprintf and gmp_fscanf to write and read: gmp_fprintf (FILE *fp, const char *fmt, ...) gmp_fscanf (FILE *fp, const char *fmt, ...) ...
Printing mpq_t in GMP library
A d (stands for decimal) is missing after the Q: gmp_printf("the rational is: %Qd\n",a); ...
Print large integer as exponential function
The %Fe or %FE format specifier expects an object of mpf_t type. Hence, you would need to create temporary variable just for gmp_printf(). For instance: #include <stdio.h> #include <gmp.h> int main(void) { mpz_t integer; mpz_init_set_str(integer, "123456789012", 10); /* Print integer's value in scientific notation */ { mpf_t tmp_float; mpf_init(tmp_float); mpf_set_z(tmp_float,...
Problems Building GMP using iOS SDK 8.3
ios,compilation,make,gmp,armv7
This issue was fixed a few months ago. Sadly, it isn't available in an official release yet, but you can get a snapshot from https://gmplib.org/download/snapshot/ .
gmp_import segmentation fault
c,import,segmentation-fault,gmp
as far as I can tell struct kbag *k = init_kbag(); //line 6 crypto.c but in struct kbag *init_kbag() { struct kbag *k = malloc(sizeof(struct kbag)); mpz_init(k->exponent); mpz_init(k->modulo); } you don't return the address of the pointer you just created, so the k pointer isn't pointing to anything...
sending gmp type mpf_t using openMPI
mpf_t uses several pointers, so you should serialize mpf_t (and other GMP types) before sending via MPI. There were some letters about MPI in GMP mailing list: https://gmplib.org/list-archives/gmp-discuss/2008-March/003091.html There is article about MPI wrapper library for GMP (MPIGMP + MPIBNCpack): http://na-inet.jp/na/bnc/brief_intro_mpibncpack.pdf Also there were solution of mpf_t serialization into file,...
Power big float numbers (100.33^360)
From the PHP GMP documentation page: These functions allow you to work with arbitrary-length INTEGERS using the GNU MP library. In other words, no floating point allowed. GMP itself can do floating point but it appears that the PHP interface to it doesn't use its full power. You can use...
GMP on Windows with msys
Let's look at the errors: checking for assembler local label prefix... configure: WARNING: "/c/Program Files (x86)/Dev-Cpp/MinGW64/bin/nm" failure configure: WARNING: cannot determine local label, using default L L checking for assembler byte directive... .byte checking how to define a 32-bit word... ./configure: line 25284: /c/Program: No such file or directory ./configure:...
dumpbin reporting wrong target architecture for a static library
c,static-libraries,cpu-architecture,gmp,dumpbin
It appears that there are no 64bit or 32bit static library types. After performing some assertions on the library using objdump and dumpbin, both were reporting correct information. objdump reported some of the object files to be 64bit and the others 32bits. dumpbin did the same thing. The problem boils...
Writing number with a lot of digits into file using MPIR
The gmp_printf() function (thus subsequently gmp_fprintf() as well) requires special format specifier for mpz_t object (which I guess xyz is). You should use %Zd instead of plain %d, that does not work. To be pedantic it's undefined behavior to use inadequate f.s. in C. If you don't need "full-featured" formatted...
Generating scip.jar file (mac)
The problem is that "gmp" is missing on your system. You have two options: Install the gmp library Compile SoPlex without gmp. For doing this call: make soplex GMP=false A similar issue might come up with the zlib. If this library is not installed on your system. If this is...