FractionalPart

FractionalPart[x] gives the fractional part of x.

Mathematical function (see Section A.3.10).

FractionalPart[x] in effect takes all digits to the right of the decimal point and drops the others.

Examples: FractionalPart[2.4] ; FractionalPart[2.6] ; FractionalPart[-2.4] ; FractionalPart[-2.6] .

FractionalPart[x] + IntegerPart[x] is always exactly x.

FractionalPart[x] yields a result when x is any numeric quantity, whether or not it is an explicit number.

Example: FractionalPart[Pi^2] .

For exact numeric quantities, FractionalPart internally uses numerical approximations to establish its result. This process can be affected by the setting of the global variable $MaxExtraPrecision.

See Section 3.2.2.

See also: IntegerPart, Mod.

New in Version 3.

Further Examples