Search found 1 match
- Sun Nov 17, 2002 9:57 am
- Forum: Volume 103 (10300-10399)
- Topic: 10394 - Twin Primes
- Replies: 101
- Views: 44133
Method for generating prime faster
#include<stdlib.h> #include<malloc.h> #define isprime(f,x) (*(f+(x)/16)&(1<<(((x)%16L)/2))) #define setprime(f,x) *(f+(x)/16)|=1<<(((x)%16L)/2) void main() { unsigned char *field=NULL,*zzz; unsigned long teste=1,max,mom,count,alloc; max=20010000L; while(field==NULL) zzz=field=(unsigned char*) ma...