The DecFP package
https://github.com/stevengj/DecFP.jl
provides 32-bit, 64-bit, and 128-bit binary-encoded decimal floating-point
types following the IEEE 754-2008, implemented as a wrapper around the
(BSD-licensed) Intel Decimal Floating-Point Math Library
<https://software.intel.com/en-us/articles/intel-decimal-floating-point-math-library>.
Decimal floating-point types are useful in situations where you need to
exactly represent decimal values, typically human inputs.
As software floating point, this is about 100x slower than hardware binary
floating-point math. On the other hand, it is significantly (10-100x)
faster than arbitrary-precision decimal arithmetic, and is a
memory-efficient bitstype.
The basic arithmetic functions, conversions from other numeric types, and
numerous special functions are supported.
