# timer

cpu time

## Calling Sequence

    timer()

## Description

Returns the CPU time since the preceding call to `timer()`.

timer has a time precision of 100 nanoseconds.

NOTE: CPU time is the number of processor cycles used for a computation. This is not at all equivalent to real-world time.

CPU time can be used to compare CPU usage between different programs or functions , irrespective of background processes that might slow down the computer.

## Examples

    timer();A=rand(100,100);timer()

## See Also

- getdate
- toc
- tic
- etime