The NORM function computes the Euclidean norm of a vector. Alternatively, NORM computes the Infinity norm of an array.

This routine is written in the IDL language. Its source code can be found in the file ```
norm.pro
```

in the ```
lib
```

subdirectory of the IDL distribution.

Define an *
n*
-element complex vector A:

A = [COMPLEX(1, 0), COMPLEX(2,-2), COMPLEX(-3,1)]

PRINT, NORM(A) *;
Compute the Euclidean norm of A and print.*

Define an *
m*
by *
n*
complex array A:

B = [[COMPLEX(1, 0), COMPLEX(2,-2), COMPLEX(-3,1)], $

[COMPLEX(1,-2), COMPLEX(2, 2), COMPLEX(1, 0)]]

PRINT, NORM(B, /DOUBLE) *;
Compute the Infinity norm of B and print.*