v3.80: double-double and quad-double updates

Fleshed out double-double and quad-double types.

New math lib structure that is modeled after Boost.MATH but optimized for mixed-precision algorithm design and optimization.

v3.79: quad-double type

A new quad-double floating-point type and math library.

The quad-double is a segmented floating-point type consisting of four (4) doubles capturing 212 bits of precision.

v3.78 double-double type

v3.78 presents a new double-double type

v3.75: new posit infrastructure

added a fast posit<16,2> and restructured the regression environment to support more of these specialized posit implementations.

v3.74: new posit R&D

Added a new fast standard posit<16,2>

JOSS release

JOSS release with code, documentation, and verification review.

V3.58: logarithmic number system

Introduction of a logarithmic number system, lns<nbits, rbits, ArithmeticBehavior, BlockType>

V3.49: classic floating-point with parameterized sub and supernormals

First release of a classic floating-point using a new block floating-point arithmetic engine.

v3.48: Clean arithmetic exception hierarchy

Bringing in all the number systems into the new exception hierarchy.

Code hygiene for gcc and clang.

Streamlining cfloat regression suites.

v3.43: Fixpnt with bit_cast support

fixpnt number system is now using bit_cast when C++20 is enabled.

Restructured the build with new classifications.

Moved areal forward.

Added number traits to command line tools that deal with IEEE-754.

Enabled long double support on ieee754_parameter class.