commit 6273ba69a07deb3c33048503adbb4fbb8c8a4b75
parent 93a502552e2584c5e59d3afac626e001cd314682
Author: NunoSempere <nuno.sempere@protonmail.com>
Date: Fri, 2 Jun 2023 16:37:57 -0600
make format
Diffstat:
| M | C/samples.c | | | 78 | +++++++++++++++++++++++++++++++++++++++--------------------------------------- |
1 file changed, 39 insertions(+), 39 deletions(-)
diff --git a/C/samples.c b/C/samples.c
@@ -85,8 +85,8 @@ float split_array_sum(float** meta_array, int length, int divided_into)
float rand_float(float to, unsigned int* seed)
{
return ((float)rand_r(seed) / (float)RAND_MAX) * to;
- // See: <https://stackoverflow.com/questions/43151361/how-to-create-thread-safe-random-number-generator-in-c-using-rand-r> for why to use rand_r:
- // rand() is not thread-safe, as it relies on (shared) hidden state.
+ // See: <https://stackoverflow.com/questions/43151361/how-to-create-thread-safe-random-number-generator-in-c-using-rand-r> for why to use rand_r:
+ // rand() is not thread-safe, as it relies on (shared) hidden state.
}
float ur_normal(unsigned int* seed)
@@ -99,7 +99,7 @@ float ur_normal(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)
@@ -123,10 +123,10 @@ inline float random_to(float low, float high, unsigned int* seed)
}
// 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
- // or in C-02-better-algorithm-one-thread/
+ // You can see a simpler version of this function in the git history
+ // or in C-02-better-algorithm-one-thread/
float sum_weights = array_sum(weights, n_dists);
float* normalized_weights = malloc(n_dists * sizeof(float));
for (int i = 0; i < n_dists; i++) {
@@ -139,11 +139,11 @@ void mixture(float (*samplers[])(unsigned int* ), float* weights, int n_dists, f
//create var holders
float p1;
int sample_index, i, own_length;
- unsigned int* seeds[n_threads];
- for(unsigned int i=0; i<n_threads; i++){
- seeds[i] = malloc(sizeof(unsigned int));
- *seeds[i] = i;
- }
+ unsigned int* seeds[n_threads];
+ for (unsigned int i = 0; i < n_threads; i++) {
+ seeds[i] = malloc(sizeof(unsigned int));
+ *seeds[i] = i;
+ }
#pragma omp parallel private(i, p1, sample_index, own_length)
{
@@ -163,9 +163,9 @@ void mixture(float (*samplers[])(unsigned int* ), float* weights, int n_dists, f
}
free(normalized_weights);
free(cummulative_weights);
- for(unsigned int i=0; i<n_threads; i++){
- free(seeds[i]);
- }
+ for (unsigned int i = 0; i < n_threads; i++) {
+ free(seeds[i]);
+ }
}
// Functions used for the BOTEC.
@@ -193,30 +193,30 @@ float sample_many(unsigned int* seed)
int main()
{
-
- // Toy example
- // Declare variables in play
- float p_a, p_b, p_c;
- int n_threads = omp_get_max_threads();
- // printf("Max threads: %d\n", n_threads);
- // omp_set_num_threads(n_threads);
- float** dist_mixture = malloc(n_threads * sizeof(float*));
- split_array_allocate(dist_mixture, N, n_threads);
-
- // Initialize variables
- p_a = 0.8;
- p_b = 0.5;
- p_c = p_a * p_b;
-
- // Generate mixture
- int n_dists = 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 };
-
- 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);
- // array_print(dist_mixture[0], N);
- split_array_free(dist_mixture, n_threads);
-
+
+ // Toy example
+ // Declare variables in play
+ float p_a, p_b, p_c;
+ int n_threads = omp_get_max_threads();
+ // printf("Max threads: %d\n", n_threads);
+ // omp_set_num_threads(n_threads);
+ float** dist_mixture = malloc(n_threads * sizeof(float*));
+ split_array_allocate(dist_mixture, N, n_threads);
+
+ // Initialize variables
+ p_a = 0.8;
+ p_b = 0.5;
+ p_c = p_a * p_b;
+
+ // Generate mixture
+ int n_dists = 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 };
+
+ 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);
+ // array_print(dist_mixture[0], N);
+ split_array_free(dist_mixture, n_threads);
+
return 0;
}