45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
#include "../../../squiggle.h"
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#include <stdio.h>
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#include <stdlib.h>
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double sample_model(uint64_t* seed){
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double sample_0(uint64_t* seed) { UNUSED(seed); return 0; }
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// Using a gcc extension, you can define a function inside another function
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double sample_1(uint64_t* seed) { UNUSED(seed); return 1; }
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double sample_few(uint64_t* seed) { return sample_to(1, 3, seed); }
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double sample_many(uint64_t* seed) { return sample_to(2, 10, seed); }
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double p_a = 0.8;
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double p_b = 0.5;
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double p_c = p_a * p_b;
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int n_dists = 4;
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double weights[] = { 1 - p_c, p_c / 2, p_c / 4, p_c / 4 };
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double (*samplers[])(uint64_t*) = { sample_0, sample_1, sample_few, sample_many };
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double result = sample_mixture(samplers, weights, n_dists, seed);
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return result;
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}
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int main()
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{
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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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int n_samples = 1000000;
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double* result_many = (double*)malloc((size_t)n_samples * sizeof(double));
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for (int i = 0; i < n_samples; i++) {
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result_many[i] = sample_model(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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