boost mathematical library
https://dlmf.nist.gov/ 
DLMF: NIST Digital Library of Mathematical Functions
https://commons.apache.org/proper/commons-math/
https://en.m.wikipedia.org/wiki/list_of_numerical_libraries
https://en.m.wikipedia.org/wiki/math_library
OpenGL Mathematics
https://glm.g-truc.net/0.9.9/index.html 
Student Mathematical Library
https://bookstore.ams.org/stml
Standard Math Library Libraries  Algebraic functions
Elementary transcendental functions
Higher transcendental functions
Integral rounding functions
IEEE standard recommended functions
IEEE classification functions
https://docs.oracle.com/cd/E19957-01/806-3568/ncg_lib.html
Library of Mathematics | Book series home
https://www.springer.com/series/10864
Lean and its Mathematical Library  mathlib
https://leanprover-community.github.io/lean3/ 
Maintaining a Library of Formal Mathematics
https://link.springer.com/chapter/10.1007/978-3-030-53518-6_16
    delphi
    Large numbers
     numerical 
     Mathematics 
    Numeric
    BIG numerical pascal
Large numbers
    numerical 
     Mathematics 
    Numeric
    BIG numerical  
https://github.com/topics/big-number
https://github.com/afriess/GNURZ
https://github.com/fundamentalslib/fundamentals5
https://github.com/SnakeDoctor/FGInt
https://github.com/zsoltszakaly/longmathforpascal
https://github.com/TurboPack/RudysBigNumbers
libraries  Large numbers  numerical  Mathematics Numeric BIG numerical
float single precision double 128bit Quadruple Precision
https://en.wikipedia.org/wiki/Quadruple-precision_floating-point_format
https://wiki.lazarus.freepascal.org/BigInteger
https://en.wikipedia.org/wiki/Modular_exponentiation
https://spazioinwind.libero.it/frm/software/
http://www.rvelthuis.de/programs/bigintegers.html
https://blogs.embarcadero.com/getting-big-with-pi-in-delphi/
https://stackoverflow.com/questions/6892937/huge-number-in-delphi
delphi Algorithms Maths Huge numbers
http://rvelthuis.de/programs/bigintegers.html
https://www.chiefdelphi.com/t/large-multiplication/39420/2