apl>" <------------------------- sam044.txt ---------------------------->


apl>  x#4 -5


apl>" <-- conjugate ---------------------------------------------------->


apl>  +x

4 -5

apl>" <-- negative ----------------------------------------------------->


apl>  _x

-4 5

apl>" <-- reciprocal --------------------------------------------------->


apl>  %x

 .25 -0.2

apl>" <-- signum (sign) ------------------------------------------------>


apl>  X -3 0 4

-1 0 1

apl>" <-- magnitude (absolute value) ----------------------------------->


apl>  | -3 0 4

3 0 4

apl>)off