OCaml source code for the following paper presented at FSCD 2021: Maika Fujii and Kenichi Asai "Derivation of a Virtual Machine for Four Variants of Delimited-Control Operators" 6th International Conference on Formal Structures for Computation and Deduction, FSCD 2021, July 17-24, 2021, Buenos Aires, Argentina (Virtual Conference), volume 195 of LIPIcs, pages 16:1-16:19, doi:10.4230/LIPIcs.FSCD.2021.16. To compile, you need OCamlMakefile. Write the location of the OCamlMakefile in eval*/Makefile and make. To execute the interpreter, run ./interpreter and input the program into the standard input. Example inputs: 1 + reset (reset (2 * reset ((fun y -> shift h -> y) (shift f -> shift g -> 3 + f 4)))) 1 + reset (reset (2 * reset ((fun y -> control h -> y) (control f -> control g -> 3 + f 4)))) 1 + reset (reset (2 * reset ((fun y -> shift0 h -> y) (shift0 f -> shift0 g -> 3 + f 4)))) 1 + reset (reset (2 * reset ((fun y -> control0 h -> y) (control0 f -> control0 g -> 3 + f 4)))) eval1/ Listing 1: definitional interpreter eval2/ Listing 2: defunctionalized interpreter eval3/ Listing 3: linearized interpreter eval4/ Listing 4: stack-based interpreter eval5/ Listing 5: delinearized interpreter eval6/ Listing 6: refunctionalized interpreter eval7/ Listing 7: interpreter with combined arguments eval8/ Listing 8: interpreter with functional instructions eval9/ Listing 9: interpreter with defunctionalized instructions eval10/ (Listing 10): interpreter with linearized instructions eval11/ Listing 11: interpreter with linearized trails