You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.3 KiB
55 lines
1.3 KiB
// Public random number operations.
|
|
|
|
#ifndef _CL_RANDOM_H
|
|
#define _CL_RANDOM_H
|
|
|
|
#include "cln/types.h"
|
|
#include "cln/modules.h"
|
|
|
|
namespace cln {
|
|
|
|
class random_state {
|
|
public:
|
|
struct { uint32 hi; uint32 lo; } seed;
|
|
// Constructor:
|
|
random_state ();
|
|
};
|
|
|
|
// random32(randomstate) liefert eine neue Zufallszahl.
|
|
// > randomstate: ein Random-State, wird verändert
|
|
// < ergebnis: eine 32-Bit-Zufallszahl
|
|
extern uint32 random32 (random_state& randomstate);
|
|
|
|
#if defined(HAVE_FAST_LONGLONG)
|
|
// random64(randomstate) liefert eine neue Zufallszahl.
|
|
// > randomstate: ein Random-State, wird verändert
|
|
// < ergebnis: eine 64-Bit-Zufallszahl
|
|
inline uint64 random64 (random_state& randomstate)
|
|
{
|
|
return ((uint64)random32(randomstate) << 32)
|
|
| (uint64)random32(randomstate);
|
|
}
|
|
#endif
|
|
|
|
// Ein globaler Zufallszahlengenerator.
|
|
extern random_state default_random_state;
|
|
class cl_random_def_init_helper
|
|
{
|
|
static int count;
|
|
public:
|
|
cl_random_def_init_helper();
|
|
~cl_random_def_init_helper();
|
|
};
|
|
static cl_random_def_init_helper cl_random_def_init_helper_instance;
|
|
|
|
// Das ist der Default-Generator.
|
|
inline uint32 random32 (void)
|
|
{ return random32(default_random_state); }
|
|
#if defined(HAVE_FAST_LONGLONG)
|
|
inline uint64 random64 (void)
|
|
{ return random64(default_random_state); }
|
|
#endif
|
|
|
|
} // namespace cln
|
|
|
|
#endif /* _CL_RANDOM_H */
|