and i want to know if it's possible to adapt it to extract random lines from a file.
I have tried to compile it but it failed:
gcc -O2 -m64 vitter.c -lm -o vitter
vitter.c: In function ‘random_double’:
vitter.c:7:10: warning: implicit declaration of function ‘genrand64_real2’ [-Wimplicit-function-declaration]
return genrand64_real2();
^~~~~~~
vitter.c: At top level:
vitter.c:16:13: error: unknown type name ‘int64_t’
void vitter(int64_t a, int64_t n, int64_t N) //Method D
^~~
vitter.c:16:25: error: unknown type name ‘int64_t’
void vitter(int64_t a, int64_t n, int64_t N) //Method D
^~~
vitter.c:16:36: error: unknown type name ‘int64_t’
void vitter(int64_t a, int64_t n, int64_t N) //Method D
^~~
vitter.c:141:15: error: unknown type name ‘int64_t’
void vitter_a(int64_t a, int64_t n, int64_t N, int64_t j) //Method A
^~~
vitter.c:141:27: error: unknown type name ‘int64_t’
void vitter_a(int64_t a, int64_t n, int64_t N, int64_t j) //Method A
^~~
vitter.c:141:38: error: unknown type name ‘int64_t’
void vitter_a(int64_t a, int64_t n, int64_t N, int64_t j) //Method A
^~~
vitter.c:141:49: error: unknown type name ‘int64_t’
void vitter_a(int64_t *a, int64_t n, int64_t N, int64_t j) //Method A
--Hi,
i found a piece of code here: https://getkerf.wordpress.com/2016/03/30/the-best-algorithm-no-one-knows-about/
and i want to know if it's possible to adapt it to extract random lines from a file.
I have tried to compile it but it failed:
gcc -O2 -m64 vitter.c -lm -o vitter vitter.c: In function ‘random_double’: vitter.c:7:10: warning: implicit declaration of function ‘genrand64_real2’ [-Wimplicit-function-declaration] return genrand64_real2(); ^
~~~~~~ vitter.c: At top level: vitter.c:16:13: error: unknown type name ‘int64_t’ void vitter(int64_t a, int64_t n, int64_t N) //Method D ^~~ vitter.c:16:25: error: unknown type name ‘int64_t’ void vitter(int64_t a, int64_t n, int64_t N) //Method D ^~~ vitter.c:16:36: error: unknown type name ‘int64_t’ void vitter(int64_t a, int64_t n, int64_t N) //Method D ^~~ vitter.c:141:15: error: unknown type name ‘int64_t’ void vitter_a(int64_t a, int64_t n, int64_t N, int64_t j) //Method A ^~~ vitter.c:141:27: error: unknown type name ‘int64_t’ void vitter_a(int64_t a, int64_t n, int64_t N, int64_t j) //Method A ^~~ vitter.c:141:38: error: unknown type name ‘int64_t’ void vitter_a(int64_t a, int64_t n, int64_t N, int64_t j) //Method A ^~~ vitter.c:141:49: error: unknown type name ‘int64_t’ void vitter_a(int64_t *a, int64_t n, int64_t N, int64_t j) //Method AThank you for your help