In
computing, a
fixed point presentation is a computer presentation for a (non-integer) number that has a fixed number of digits after the decimal (or binary or hexadecimal) point. For example, a fixed point number with 4 digits after the decimal point could be used to store numbers such as 1.3467, 281243.3234 and 0.1000, but would round 1.0301789 to 1.0302 and 0.0000654 to 0.0001.
In
mathematics, a
fixed point of a
function is a point which is mapped to itself by the function. For example, if
f is defined on the
real numbers by
f(
x) =
x2 - 3
x + 4, then 2 is a fixed point of
f, because
f(2) = 2. See also
Brouwer Fixed Point Theorem and
contraction mapping.
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