symbol_distribution::symbol_distribution(const symbol &s)
: total_frequencies(1) {
for (int i = 0; i < ARITHMETIC_SYMBOL_COUNT; i++) {
frequencies[i] = 0u;
}
frequencies[s.get_sequential_code()] = 1u;
}
double symbol_distribution::get_accumulated_probability(const symbol &s) const {
double result = 0.0;
for (unsigned int i = 0; i < s.get_sequential_code(); i++) {
result +=
static_cast<double>(frequencies[i]) /
static_cast<double>(total_frequencies);
}
return result;
}
unsigned int symbol_distribution::get_emissions(const symbol &s) const {
return frequencies[s.get_sequential_code()];
}
bool symbol_distribution::has_only_the_symbol(const symbol &s) const {
return frequencies[s.get_sequential_code()] == 1 && total_frequencies == 1;
}
double symbol_distribution::get_probability_of(const symbol &s) const {
int index = s.get_sequential_code();
return
static_cast<double>(frequencies[index]) /
static_cast<double>(total_frequencies);
}
bool symbol_distribution::has_symbol(const symbol &s) const {
return 0 != frequencies[s.get_sequential_code()];
}
void symbol_distribution::register_symbol_emision(const symbol &s) {
frequencies[s.get_sequential_code()]++;
total_frequencies++;
}
