regina-normal-dev 5.1-2build1 (i386 binary) in ubuntu bionic

 Regina is a software package for low-dimensional topologists. This package
 provides development files for compiling Regina's mathematical engine into
 other projects.
 .
 The calculation engine is provided as a C++ shared library. For complete
 API documentation, see the package regina-normal-doc.
 .
 Regina focuses on the study of 3-manifold and 4-manifold triangulations,
 normal surfaces, and angle structures. For Regina's standard graphical
 user interface, and for more information about what Regina can do, see
 the package regina-normal.