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realmin | Examples See Also |
Smallest positive floating-point number
n = realmin
n = realmin
returns the smallest positive normalized floating-point number on a particular computer. Anything smaller underflows or is an IEEE "denormal."
On machines with IEEE floating-point format, realmin
is 2^(-1022)
or about 2.2251e-308
.
The realmin
function is equivalent to pow2(1,minexp)
where minexp
is the smallest possible floating-point exponent.
Execute type
realmin
to see minexp
for various computers.
eps
Floating-point relative accuracy
realmax
Largest positive floating-point number