MATLAB Function Reference
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realmax    Examples   See Also

Largest positive floating-point number

Syntax

Description

n = realmax returns 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 21024 or about 1.7977e+308.

Algorithm

The realmax function is equivalent to 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         Floating-point relative accuracy

realmin     Smallest positive floating-point number


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