#include "../../squiggle.h" #include #include #include #include #define ln lognormal_params #define to(...) convert_ci_to_lognormal_params((ci) __VA_ARGS__) #define from(...) convert_lognormal_params_to_ci((ln) __VA_ARGS__) #define times(a,b) algebra_product_lognormals(a,b) int main() { // set randomness seed uint64_t* seed = malloc(sizeof(uint64_t)); *seed = 1000; // xorshift can't start with 0 ln a = to({.low = 1, .high = 10}); ln b = to({.low = 5, .high = 500}); ln c = times(a, b); printf("Result: to(%f, %f)\n", from(c).low, from(c).high); printf("One sample from it is: %f\n", sample_lognormal(c.logmean, c.logstd, seed)); free(seed); }