Mpexpr adds two new commands to Tcl, 'mpexpr' and 'mpformat'.
Mpexpr works much like Tcl's native 'expr', but does all
calculations using an arbitrary precision math package.
Mpexpr numbers can be any number of digits, with any decimal
precision. Final precision is controlled by a Tcl variable
'mp_precision', which can be any reasonable integer, limiting
only the number of digits to the right of the decimal point.
PR: ports/48764
Submitted by: chein@GeekDude.com <chein@GeekDude.Com>
