Off one in the doc?

[keepsimple1]

algebra/ff/src/fields/mod.rs

Lines 332 to 340 in dcf73a5

	/// Exponentiates a field element `f` by a number represented with `u64`
	/// limbs, using a precomputed table containing as many powers of 2 of
	/// `f` as the 1 + the floor of log2 of the exponent `exp`, starting
	/// from the 1st power. That is, `powers_of_2` should equal `&[p, p^2,
	/// p^4, ..., p^(2^n)]` when `exp` has at most `n` bits.
	///
	/// This returns `None` when a power is missing from the table.
	#[inline]
	fn pow_with_table<S: AsRef<[u64]>>(powers_of_2: &[Self], exp: S) -> Option<Self> {

In line 336, it says:
...when `exp` has at most `n` bits.

If I understand, it should say:
...when `exp` has at most `n+1` bits.

For example:
when exp is 2, the powers_of_2 should be &[p, p^2]. Here n is 1, and exp (2, i.e. binary 10) has n+1 = 2 bits.