blob: 946284fd08ac6b7ae004582ab2211e387c4c55b5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/*
* Copyright (C) 2007-2012 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#ifndef BU_RANDOM_BASE_H
#define BU_RANDOM_BASE_H
#include <stdint.h>
namespace Bu
{
class RandomBase
{
public:
RandomBase();
virtual ~RandomBase();
virtual void seed( int32_t iSeed )=0;
virtual int32_t rand()=0;
virtual inline int32_t rand( int32_t iMax ) {
return rand( 0, iMax );
}
virtual inline int32_t rand( int32_t iMin, int32_t iMax ) {
return iMin+(randNorm()*(iMax-iMin));
}
virtual inline double randNorm() {
return (((uint32_t)rand())&0xfffffffeul)*0x1.00000001p-32;
// return (((uint32_t)rand())&0xfffffffeul)/(double)(0xfffffffful);
}
};
};
#endif
|
