48Compute the 64-bit HighwayHash of I<$input>, using I<\@key> as a key.
49The key must be a 4-element arrayref, with each element either a
50number or (on Perls without 64-bit numbers) a L<Math::Int64> object. The result is a single number or (on Perls without 64-bit numbers) a L<Math::Int64> object.
54Compute the 128-bit HighwayHash of I<$input>, using I<\@key> as a key.
55The key must be a 4-element arrayref, with each element either a
56number or (on Perls without 64-bit numbers) a L<Math::Int64> object. The result is an array of exactly two numbers or (on Perls without 64-bit numbers) L<Math::Int64> objects.
60Compute the 256-bit HighwayHash of I<$input>, using I<\@key> as a key.
61The key must be a 4-element arrayref, with each element either a
62number or (on Perls without 64-bit numbers) a L<Math::Int64> object. The result is an array of exactly four numbers or (on Perls without 64-bit numbers) L<Math::Int64> objects.