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This commit is contained in:
NunoSempere 2023-06-02 16:37:57 -06:00
parent 93a502552e
commit 6273ba69a0
1 changed files with 36 additions and 36 deletions
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10
C/samples.c
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@ -99,7 +99,7 @@ float ur_normal(unsigned int* seed)
inline float random_uniform(float from, float to, unsigned int* seed) inline float random_uniform(float from, float to, unsigned int* seed)
{ {
return ((float) rand_r(seed) / (float)RAND_MAX) * (to - from) + from; return ((float)rand_r(seed) / (float)RAND_MAX) * (to - from) + from;
} }
inline float random_normal(float mean, float sigma, unsigned int* seed) inline float random_normal(float mean, float sigma, unsigned int* seed)
@ -123,7 +123,7 @@ inline float random_to(float low, float high, unsigned int* seed)
} }
// Mixture function // Mixture function
void mixture(float (*samplers[])(unsigned int* ), float* weights, int n_dists, float** results, int n_threads) void mixture(float (*samplers[])(unsigned int*), float* weights, int n_dists, float** results, int n_threads)
{ {
// You can see a simpler version of this function in the git history // You can see a simpler version of this function in the git history
// or in C-02-better-algorithm-one-thread/ // or in C-02-better-algorithm-one-thread/
@ -140,7 +140,7 @@ void mixture(float (*samplers[])(unsigned int* ), float* weights, int n_dists, f
float p1; float p1;
int sample_index, i, own_length; int sample_index, i, own_length;
unsigned int* seeds[n_threads]; unsigned int* seeds[n_threads];
for(unsigned int i=0; i<n_threads; i++){ for (unsigned int i = 0; i < n_threads; i++) {
seeds[i] = malloc(sizeof(unsigned int)); seeds[i] = malloc(sizeof(unsigned int));
*seeds[i] = i; *seeds[i] = i;
} }
@ -163,7 +163,7 @@ void mixture(float (*samplers[])(unsigned int* ), float* weights, int n_dists, f
} }
free(normalized_weights); free(normalized_weights);
free(cummulative_weights); free(cummulative_weights);
for(unsigned int i=0; i<n_threads; i++){ for (unsigned int i = 0; i < n_threads; i++) {
free(seeds[i]); free(seeds[i]);
} }
} }
@ -211,7 +211,7 @@ int main()
// Generate mixture // Generate mixture
int n_dists = 4; int n_dists = 4;
float weights[] = { 1 - p_c, p_c / 2, p_c / 4, p_c / 4 }; float weights[] = { 1 - p_c, p_c / 2, p_c / 4, p_c / 4 };
float (*samplers[])(unsigned int* ) = { sample_0, sample_1, sample_few, sample_many }; float (*samplers[])(unsigned int*) = { sample_0, sample_1, sample_few, sample_many };
mixture(samplers, weights, n_dists, dist_mixture, n_threads); mixture(samplers, weights, n_dists, dist_mixture, n_threads);
printf("Sum(dist_mixture, N)/N = %f\n", split_array_sum(dist_mixture, N, n_threads) / N); printf("Sum(dist_mixture, N)/N = %f\n", split_array_sum(dist_mixture, N, n_threads) / N);