realmax

Largest positive fixed-point value or quantized number

Syntax

realmax(a) realmax(q)

realmax(a) is the largest real-world value that can be represented in the data type of fi object a. Anything larger overflows.

realmax(q) is the largest quantized number that can be represented where q is a quantizer object. Anything larger overflows.

q = quantizer('float',[6 3]);
x = realmax(q)

x =

    14

If q is a floating-point quantizer object, the largest positive number, x, is

$x = 2^{E_{m a x}} \cdot (2 - e p s (q))$

If q is a signed fixed-point quantizer object, the largest positive number, x, is

$x = \frac{2^{w - 1} - 1}{2^{f}}$

If q is an unsigned fixed-point quantizer object (datamode = 'ufixed'), the largest positive number, x, is

$x = \frac{2^{w} - 1}{2^{f}}$

Introduced before R2006a