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

Return the drastic sum of the input. The drastic sum of two real scalars x and y is:

max (x, y)     if min (x, y) == 0
1              otherwise

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

For two vectors or matrices of identical dimensions, or for one scalar and one vector or matrix argument, return the pair-wise drastic sum.

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

Package: fuzzy-logic-toolkit