forked from personal/squiggle.c
61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "../../squiggle.h"
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// Estimate functions
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float sample_0(uint64_t* seed)
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{
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return 0;
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}
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float sample_1(uint64_t* seed)
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{
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return 1;
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}
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float sample_few(uint64_t* seed)
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{
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return sample_to(1, 3, seed);
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}
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float sample_many(uint64_t* seed)
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{
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return sample_to(2, 10, seed);
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}
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int main(){
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// set randomness seed
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uint64_t* seed = malloc(sizeof(uint64_t));
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*seed = 1000; // xorshift can't start with 0
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float p_a = 0.8;
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float p_b = 0.5;
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float p_c = p_a * p_b;
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int n_dists = 4;
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float weights[] = { 1 - p_c, p_c / 2, p_c / 4, p_c / 4 };
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float (*samplers[])(uint64_t*) = { sample_0, sample_1, sample_few, sample_many };
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int n_samples = 1000000;
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float* result_many = (float *) malloc(n_samples * sizeof(float));
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for(int i=0; i<n_samples; i++){
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result_many[i] = sample_mixture(samplers, weights, n_dists, seed);
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}
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printf("result_many: [");
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for(int i=0; i<100; i++){
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printf("%.2f, ", result_many[i]);
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}
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printf("]\n");
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free(seed);
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}
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/*
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Aggregation mechanisms:
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- Quantiles (requires a sort)
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- Sum
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- Average
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- Std
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*/
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