Filter Design Toolbox

exponentlength

Return the exponent length of a quantizer

Syntax

• e = exponentlength(q)
  

Description

e = exponentlength(q) returns the exponent length of quantizer q. When q is a fixed-point quantizer, exponentlength(q) returns 0. This is useful because exponent length is valid whether the quantizer mode is floating-point or fixed-point.

Examples

• q = quantizer('double'); 
  e = exponentlength(q); 
  

returns the value e = 11.

Algorithm

The exponent length is part of the format of a floating-point quantizer [w, e]. For fixed-point quantizers, e = 0 by definition.

See Also
eps, exponentbias, exponentmax, exponentmin

exponentbias

exponentmax