Filter Design Toolbox

realmin

Return the smallest positive normal quantized number

Syntax

• x = realmin(q)
  

Description

x = realmin(q) is the smallest positive normal quantized number where q is a quantizer. Anything smaller than x underflows or is an IEEE "denormal" number.

Examples

• q = quantizer('float',[6 3]); 
  realmin(q) 
  

returns the value 0.25.

Algorithm

If q is a floating-point quantizer,  where 

is the minimum exponent.

If q is a signed or unsigned fixed-point quantizer,  where f is the fraction length.

See Also
exponentmin, fractionlength

realmax

reset