n = realmin
realmin
is the smallest positive normalized floating-point number on a particular computer. Anything smaller underflows or is an IEEE denormal.
realmin
is 2^(-1022)
or about 2.2251e-308.
realmin
is pow2(1,minexp)
where minexp
is the smallest possible floating-point exponent.
Execute type
realmin
to see minexp
for various computers.
eps
,log2
,pow2
,realmax
(c) Copyright 1994 by The MathWorks, Inc.