cpp-course/modules/01_fundamentals/src/operators.cpp

#include "operators.hpp"

namespace fundamentals {

auto absolute_difference(const int lhs, const int rhs) -> int {
    // NOTE: std::abs not allowed
    return lhs < rhs ? rhs - lhs : lhs - rhs;
}

auto is_in_range(const int value, const int min, const int max) -> bool {
    return value >= min && value <= max;
}

auto count_set_bits(const std::uint8_t value) -> int {
    auto count = 0;
    for (int i = 0; i < 8; i++) {
        if (((value >> i) & 1) == 1) count++;
    }
    return count;
}

auto logical_and(const bool lhs, const bool rhs) -> bool {
    // NOTE: && can't be used
    return (lhs & rhs) == 1;
}

auto logical_or(const bool lhs, const bool rhs) -> bool {
    // NOTE: || can't be used
    return (lhs | rhs) == 1;
}

}  // namespace fundamentals