# realmax

## Purpose

Largest positive floating-point numbers.

## Synopsis

    n = realmax

## Description

`realmax` is the largest floating-point number representable on a particular computer. Anything larger overflows.

## Examples

On machines with IEEE floating-point format, `realmax` is one bit less than `2^1024` or about 1.7977e+308.

## Algorithm

`realmax` is `pow2(2-eps,maxexp)` where `maxexp` is the largest possible floating-point exponent.

Execute `type` `realmax` to see `maxexp` for various computers.

## See Also

    eps, log2, pow2, realmin

(c) Copyright 1994 by The MathWorks, Inc.