template<typename T> inline
void
circular_buffer<T>::shift_left(size_type &index, size_type offset) const
{
requires(index < this->_capacity);
requires(offset <= this->_capacity);
if (index >= offset)
{
ensures((index - offset) < this->_capacity);
index -= offset;
}
else
{
ensures((index + this->_capacity - offset) < this->_capacity);
index += (this->_capacity - offset);
}
}
template<typename T> inline
void
circular_buffer<T>::shift_right(size_type &index, size_type offset) const
{
requires(index < this->_capacity);
requires(offset <= this->_capacity);
index += offset;
if (index >= this->_capacity)
{
index -= this->_capacity;
}
ensures(index < this->_capacity);
}
void p() {
ensures(g == old(g));
g++;
}
PositiveNumber(T k) {
requires(k > 0);
value = k;
ensures(value > 0);
}
