Octave Fuzzy Logic Toolkit: hamacher_sum

### Function Reference: `hamacher_sum`

Function File: retval = hamacher_sum (x)
Function File: retval = hamacher_sum (x, y)

Return the Hamacher sum of the input. The Hamacher sum of two real scalars x and y is: (x + y - 2 * x * y) / (1 - x * y)

For one vector argument, apply the Hamacher sum to all of the elements of the vector. (The Hamacher sum is associative.) For one two-dimensional matrix argument, return a vector of the Hamacher sum of each column.

For two vectors or matrices of identical dimensions, or for one scalar and one vector or matrix argument, return the pairwise Hamacher sum.

See also: algebraic_product, algebraic_sum, bounded_difference, bounded_sum, drastic_product, drastic_sum, einstein_product, einstein_sum, hamacher_product