MATLAB Function Reference

realmax

Largest positive floating-point number

Syntax

• n = realmax
  

Description

n = realmax returns the largest floating-point number representable on a particular computer. Anything larger overflows.

Examples

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, realmin

reallog

realmin