| To save the state of the random number generator, you need to save all the data. Use a C++ version (or C++ interface to an assembly language version) and save all data defined in the class to a binary file. These data are private or protected so you need to make a member function to save the data and another member function to restore the data. For example:
class CRandomMersenne {
...
public:
void SaveToFile(FILE * f) {
fwrite(mt, sizeof(uint32_t), MERS_N, f);
fwrite(&mti, sizeof(int), 1, f);
fwrite(&LastInterval, sizeof(uint32_t), 1, f);
fwrite(&RLimit, sizeof(uint32_t), 1, f);
}
void RecoverFromFile(FILE * f) {
fread(mt, sizeof(uint32_t), MERS_N, f);
fread(&mti, sizeof(int), 1, f);
fread(&LastInterval, sizeof(uint32_t), 1, f);
fread(&RLimit, sizeof(uint32_t), 1, f);
}
};
Remember to open the file in binary mode and to close it again. |
How to get the seed from a running random process? new - Thuy Nguyen - 2010-07-19
How to get the seed from a running random process? - Agner - 2010-07-19