What is <<?

[subjugater]

An inline function is defined as this:

inline int pow2(int L) { assert(L>=0); return (1<<L); }

Can anybody let me know that what 1<<L means? What is <<?

Thank you so much!

[ivanho]

It is one of bitwise operators http://en.wikipedia.org/wiki/Bitwise_operation

[subjugater]

ivanho,

Thank you for reminding on shift operators!

Thx!