mirror of
https://github.com/saitohirga/WSJT-X.git
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acd269fc97
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6561 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
102 lines
1.7 KiB
C
102 lines
1.7 KiB
C
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#include <cmath>
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#include <algorithm>
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#include "Random.h"
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void Random::bubbleSort(int a[], int size)
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{
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for(int pass=1; pass<size; pass++) {
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for(int i=0;i<size-pass;i++)
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if(a[i]>a[i+1]){
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std::swap(a[i], a[i+1]);
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}
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}
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}
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double Random::gauss(double sdev, double mean)
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{
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double sum=0.0;
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for (int i=1;i<=12;++i)
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{
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seed_u = 1664525lu * seed_u + 123456789lu;
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sum+=double(seed_u);
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}
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return (sum/4.29497e9-6.0)*sdev+mean;
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}
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double Random::uniform(double a, double b)
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{
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double t;
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for(int i=0; i<10;i++){
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seed=2045*seed+1;
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//seed=seed -(seed/1048576)*1048576;
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seed%=1048576;
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}
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t=seed/1048576.0;
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t=a+(b-a)*t;
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return(t);
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}
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int Random::uniform(int a, int b) // [a, b-1]
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{
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double t;
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int i, tt;
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if(b==a+1) return(a);
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for(i=0; i<10;i++){
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seed=2045*seed+1;
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//seed=seed -(seed/1048576)*1048576;
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seed%=1048576;
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}
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t=seed/1048576.0;
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t=a+(b-a)*t;
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tt=(int)t;
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if(tt<a) tt=a;
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else if(tt>=b) tt=b-1;
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return(tt);
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}
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int Random::nonUniform(int a, int b) // [a, b-1]
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{
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double t;
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int i, tt;
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if(b==a+1) return(a);
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for(i=0; i<10;i++){
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seed=2045*seed+1;
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//seed=seed -(seed/1048576)*1048576;
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seed%=1048576;
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}
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t=seed/1048576.0;
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t=a+(b-a)*pow(t, 0.6667); //t^1.5
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tt=(int)t;
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if(tt<a) tt=a;
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else if(tt>=b) tt=b-1;
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return(tt);
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}
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/*
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void m_uniform(int a , int b, long int *seed, int *itmp, int num)
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{
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int index, imed, i, k;
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index=0;
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itmp[0]=uniform(a, b, seed);
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Loop1:
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imed=uniform(a, b, seed);
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k=0;
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for(i=0;i<=index;i++)
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if(imed==itmp[i]) {k=1; break;}
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if(k==0) {index++; itmp[index]=imed;}
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if(index<num-1) goto Loop1;
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bubble(itmp, num); //bubble sorting
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}
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*/
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