add tests for normal & beta.
This commit is contained in:
parent
f65699a688
commit
95afb7ea1a
200
test/test.c
200
test/test.c
|
|
@ -4,43 +4,69 @@
|
|||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#define N 1000 * 1000
|
||||
#define PERCENTAGE_TOLERANCE 1.0/1000.0
|
||||
#define N 1000 * 1000
|
||||
#define PERCENTAGE_TOLERANCE_UNIFORM 1.0/1000.0
|
||||
#define PERCENTAGE_TOLERANCE_NORMAL 5.0/1000.0
|
||||
#define MAX_NAME_LENGTH 500
|
||||
|
||||
void test_unit_uniform(uint64_t* seed){
|
||||
double* unit_uniform_array = malloc(sizeof(double) * N);
|
||||
|
||||
for(int i=0; i<N; i++){
|
||||
unit_uniform_array[i] = sample_unit_uniform(seed);
|
||||
}
|
||||
|
||||
double mean = array_mean(unit_uniform_array, N);
|
||||
double expected_mean = 0.5;
|
||||
double delta_mean = mean - expected_mean;
|
||||
// Structs
|
||||
|
||||
double std = array_std(unit_uniform_array, N);
|
||||
double expected_std = sqrt(1.0/12.0);
|
||||
double delta_std = std - expected_std;
|
||||
|
||||
printf("Mean of unit uniform: %f, vs expected mean: %f, delta: %f\n", mean, expected_mean, delta_mean);
|
||||
printf("Std of unit uniform: %f, vs expected std: %f, delta: %f\n", std, expected_std, delta_std);
|
||||
struct array_expectations {
|
||||
double* array;
|
||||
int n;
|
||||
char* name;
|
||||
double expected_mean;
|
||||
double expected_std;
|
||||
double tolerance;
|
||||
};
|
||||
|
||||
if(fabs(delta_mean) > PERCENTAGE_TOLERANCE){
|
||||
printf("[-] Mean test for unit uniform NOT passed.\n");
|
||||
void test_array_expectations(struct array_expectations e){
|
||||
double mean = array_mean(e.array, e.n);
|
||||
double delta_mean = mean - e.expected_mean;
|
||||
|
||||
double std = array_std(e.array, e.n);
|
||||
double delta_std = std - e.expected_std;
|
||||
|
||||
|
||||
if(fabs(delta_mean) > e.tolerance){
|
||||
printf("[-] Mean test for %s NOT passed.\n", e.name);
|
||||
printf("Mean of %s: %f, vs expected mean: %f, delta: %f\n", e.name, mean, e.expected_mean, delta_mean);
|
||||
}else {
|
||||
printf("[x] Mean test for unit uniform PASSED\n");
|
||||
printf("[x] Mean test for %s PASSED\n", e.name);
|
||||
}
|
||||
|
||||
if(fabs(delta_std) > PERCENTAGE_TOLERANCE){
|
||||
printf("[-] Std test for unit uniform NOT passed.\n");
|
||||
if(fabs(delta_std) > e.tolerance){
|
||||
printf("[-] Std test for %s NOT passed.\n", e.name);
|
||||
printf("Std of %s: %f, vs expected std: %f, delta: %f\n", e.name, std, e.expected_std, delta_std);
|
||||
}else {
|
||||
printf("[x] Std test for unit uniform PASSED\n");
|
||||
printf("[x] Std test for %s PASSED\n", e.name);
|
||||
}
|
||||
|
||||
printf("\n");
|
||||
|
||||
}
|
||||
|
||||
// Test unit uniform
|
||||
void test_unit_uniform(uint64_t* seed){
|
||||
double* unit_uniform_array = malloc(sizeof(double) * N);
|
||||
|
||||
for(int i=0; i<N; i++){
|
||||
unit_uniform_array[i] = sample_unit_uniform(seed);
|
||||
}
|
||||
|
||||
struct array_expectations expectations = {
|
||||
.array = unit_uniform_array,
|
||||
.n = N,
|
||||
.name = "unit uniform",
|
||||
.expected_mean = 0.5,
|
||||
.expected_std = sqrt(1.0/12.0),
|
||||
.tolerance = 1 * PERCENTAGE_TOLERANCE_UNIFORM,
|
||||
};
|
||||
|
||||
test_array_expectations(expectations);
|
||||
}
|
||||
|
||||
// Test uniforms
|
||||
void test_uniform(double start, double end, uint64_t* seed){
|
||||
double* uniform_array = malloc(sizeof(double) * N);
|
||||
|
||||
|
|
@ -48,34 +74,86 @@ void test_uniform(double start, double end, uint64_t* seed){
|
|||
uniform_array[i] = sample_uniform(start, end, seed);
|
||||
}
|
||||
|
||||
double mean = array_mean(uniform_array, N);
|
||||
double expected_mean = (start + end) / 2;
|
||||
double delta_mean = mean - expected_mean;
|
||||
char* name = malloc(MAX_NAME_LENGTH * sizeof(char));
|
||||
snprintf(name, MAX_NAME_LENGTH, "[%f, %f] uniform", start, end);
|
||||
struct array_expectations expectations = {
|
||||
.array = uniform_array,
|
||||
.n = N,
|
||||
.name = name,
|
||||
.expected_mean = (start + end)/2,
|
||||
.expected_std = sqrt(1.0/12.0) * fabs(end-start),
|
||||
.tolerance = fabs(end -start) * PERCENTAGE_TOLERANCE_UNIFORM,
|
||||
};
|
||||
|
||||
test_array_expectations(expectations);
|
||||
free(name);
|
||||
}
|
||||
|
||||
// Test unit normal
|
||||
void test_unit_normal(uint64_t* seed){
|
||||
double* unit_normal_array = malloc(sizeof(double) * N);
|
||||
|
||||
double std = array_std(uniform_array, N);
|
||||
double expected_std = sqrt(1.0/12.0) * fabs(end-start);
|
||||
double delta_std = std - expected_std;
|
||||
|
||||
double width = fabs(end - start);
|
||||
if(fabs(delta_mean) > width * PERCENTAGE_TOLERANCE){
|
||||
printf("[-] Mean test for [%.1f, %.1f] uniform NOT passed.\n", start, end);
|
||||
printf("Mean of [%.1f, %.1f] uniform: %f, vs expected mean: %f, delta: %f\n", start, end, mean, expected_mean, mean - expected_mean);
|
||||
}else {
|
||||
printf("[x] Mean test for [%.1f, %.1f] uniform PASSED\n", start, end);
|
||||
for(int i=0; i<N; i++){
|
||||
unit_normal_array[i] = sample_unit_normal(seed);
|
||||
}
|
||||
|
||||
if(fabs(delta_std) > width * PERCENTAGE_TOLERANCE){
|
||||
printf("[-] Std test for [%.1f, %.1f] uniform NOT passed.\n", start, end);
|
||||
printf("Std of [%.1f, %.1f] uniform: %f, vs expected std: %f, delta: %f\n", start, end, std, expected_std, std - expected_std);
|
||||
for(int i=0; i<10; i++){
|
||||
struct array_expectations expectations = {
|
||||
.array = unit_normal_array,
|
||||
.n = N,
|
||||
.name = "unit normal",
|
||||
.expected_mean = 0,
|
||||
.expected_std = 1,
|
||||
.tolerance = 1 * PERCENTAGE_TOLERANCE_NORMAL,
|
||||
};
|
||||
|
||||
printf("%.1f, ", uniform_array[i]);
|
||||
}
|
||||
}else {
|
||||
printf("[x] Std test for [%.1f, %.1f] uniform PASSED\n", start, end);
|
||||
test_array_expectations(expectations);
|
||||
}
|
||||
|
||||
// Test normal
|
||||
void test_normal(double mean, double std, uint64_t* seed){
|
||||
double* normal_array = malloc(sizeof(double) * N);
|
||||
|
||||
for(int i=0; i<N; i++){
|
||||
normal_array[i] = sample_normal(mean, std, seed);
|
||||
}
|
||||
printf("\n");
|
||||
|
||||
char* name = malloc(MAX_NAME_LENGTH * sizeof(char));
|
||||
snprintf(name, MAX_NAME_LENGTH, "normal(%f, %f)", mean, std);
|
||||
struct array_expectations expectations = {
|
||||
.array = normal_array,
|
||||
.n = N,
|
||||
.name = name,
|
||||
.expected_mean = mean,
|
||||
.expected_std = std,
|
||||
.tolerance = std * PERCENTAGE_TOLERANCE_NORMAL,
|
||||
};
|
||||
|
||||
test_array_expectations(expectations);
|
||||
free(name);
|
||||
}
|
||||
|
||||
// Test beta
|
||||
|
||||
void test_beta(double a, double b, uint64_t* seed){
|
||||
double* beta_array = malloc(sizeof(double) * N);
|
||||
|
||||
for(int i=0; i<N; i++){
|
||||
beta_array[i] = sample_beta(a, b, seed);
|
||||
}
|
||||
|
||||
char* name = malloc(MAX_NAME_LENGTH * sizeof(char));
|
||||
snprintf(name, MAX_NAME_LENGTH, "beta(%f, %f)", a, b);
|
||||
struct array_expectations expectations = {
|
||||
.array = beta_array,
|
||||
.n = N,
|
||||
.name = name,
|
||||
.expected_mean = a/(a+b),
|
||||
.expected_std = sqrt((a*b)/(pow(a+b, 2) * (a + b + 1))),
|
||||
.tolerance = PERCENTAGE_TOLERANCE_UNIFORM,
|
||||
};
|
||||
|
||||
test_array_expectations(expectations);
|
||||
free(name);
|
||||
}
|
||||
|
||||
int main(){
|
||||
|
|
@ -104,6 +182,36 @@ int main(){
|
|||
}
|
||||
}
|
||||
|
||||
printf("Testing unit normal\n");
|
||||
test_unit_normal(seed);
|
||||
|
||||
printf("Testing small normals\n");
|
||||
for(int i=0; i<100; i++){
|
||||
double mean = sample_normal(-10, 10, seed);
|
||||
double std = sample_normal(0, 10, seed);
|
||||
if ( std > 0){
|
||||
test_normal(mean, std, seed);
|
||||
}
|
||||
}
|
||||
|
||||
printf("Testing larger normals\n");
|
||||
for(int i=0; i<100; i++){
|
||||
double mean = sample_uniform(-1000 * 1000, 1000 * 1000, seed);
|
||||
double std = sample_uniform(0, 1000 * 1000, seed);
|
||||
if ( std > 0){
|
||||
test_normal(mean, std, seed);
|
||||
}
|
||||
}
|
||||
|
||||
printf("Testing beta distribution\n");
|
||||
for(int i=0; i<100; i++){
|
||||
double a = sample_uniform(0, 1000, seed);
|
||||
double b = sample_uniform(0, 1000, seed);
|
||||
if ( (a > 0) && ( b >0)){
|
||||
test_beta(a, b, seed);
|
||||
}
|
||||
}
|
||||
|
||||
free(seed);
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user