PoolTicksCounter

Source: https://docs.uniswap.org/contracts/v3/reference/periphery/libraries/PoolTicksCounter 

Functions

countInitializedTicksCrossed

  function countInitializedTicksCrossed(
  ) internal view returns (uint32 initializedTicksCrossed)

This function counts the number of initialized ticks that would incur a gas cost between tickBefore and tickAfter. When tickBefore and/or tickAfter themselves are initialized, the logic over whether we should count them depends on the direction of the swap. If we are swapping upwards (tickAfter > tickBefore) we don’t want to count tickBefore but we do want to count tickAfter. The opposite is true if we are swapping downwards.