not

Syntax

not(X) or !(X)

X is a scalar/pair/vector/matrix.

Return NOT of each element of X. Returned values are 0, 1, or NULL. NOT of 0 is 1; NOT of NULL is still NULL; NOT of all other values is 0.

!1.5;
// output
0

not 0;
// output
1

x=1 0 2;
not x;
// output
[0,1,0]

m=1 1 1 1 1 0 0 0 0 0$2:5;
m;


#0	#1	#2	#3	#4
1	1	1	0	0
1	1	0	0	0

not m;


#0	#1	#2	#3	#4
0	0	0	1	1
0	0	1	1	1

(1).not();
// output
0

(!NULL)==NULL;
// output
1

Related functions: and, or