SameValue
Tests if two objects are equal (with epsilon).
Syntax

SameValue(x, y[, ε])

x
andy
are any two objects 
ε
is a positive number

Description
If x
and y
are any two objects, then SameValue(x, y, ε)
is true
iff x
and y
are equal, with floatingpoint values being compared with epsilon ε
. SameValue
should be used to compare numeric objects such as numbers, vectors, matrices, and lists containing such elements; not all object types support epsilon comparison.
If omitted, a default (but nonzero) epsilon will be used.
The binary ≈
operator is implemented by the SameValue
function. It will always use the default (but nonzero) epsilon.