What is "tobos-fp"

ToBoS-FP is a floating point compiler for the Sinclair BASIC on ZX Spectrum. The name stands for Toruń, Jerzy Borkowski, Wojciech Skaba, Floating Point. The compiler was released in Poland in 1986. Source code compilation enables substantial (20+) speed up of execution of programs that are normally interpreted. The acceleration results mostly from the utilization of compiler's own floating point arithmetic library and graphics library that replace the ZX Spectrum built-in routines. In a 1992 independent survey, ToBoS-FP was named the most popular of all known BASIC compilers for the ZX Spectrum. It is still referred to as one of the best BASIC compiler for ZX Spectrum.