init_at

Description:

public bool init_at (Bitset @set, uint target, out uint value)

Initializes iter to point to target.

If target is not found, finds the next value after it. If no value >= target exists in set, this function returns false.

target	target value to start iterating at
value	Set to the found value in `set`
iter	a pointer to an uninitialized `GtkBitsetIter`
set	a `GtkBitset`

true if a value was found.