difference

difference( 
n_op1 
n_op2 
[ n_op3 ... ] 
) 
=> n_result

Returns the result of subtracting one or more operands from the first operand. Prefix form of the - arithmetic operator.

n_op1	Number from which the others are to be subtracted.
n_op2	Number to subtract.
n_op3	Optional additional numbers to subtract.

n_result

Result of the operation.

difference(5 4 3 2 1) 
=> -5

difference(-12 13)   
=> -25

difference(12.2 -13)  
=> 25.2