wip/py-spfpm 0.6.1 NetBSD

'FixedPoint (SPFPM) is a pure-Python module which provides basic facilities for manipulating fixed-point numbers of essentially arbitrary precision It aims to be more suitable for simulating binary fixed-point artihmetic within electronic hardware (e.g. for digital signal processing (DSP) applications) than the Decimal package, which is more concerned with fixed-point arithmetic in base-10 SPFPM supports basic arithmetic operations as well as a range of mathematical functions including sqrt, exp, sin, cos, atan etc.