set-opt: Set compiler optimization
In odeintr: C++ ODE Solvers Compiled on-Demand

Description Usage Arguments Details Note Author(s) See Also

Write a user Makevars with updated optimization level

set_optimization(level = 3, omit.debug = FALSE, disable.asserts = FALSE,
  suppress.warnings = FALSE, overwrite = FALSE)

show.Makevars()

rm.Makevars()

`level`	the compiler optimization level (-O<level>)
`omit.debug`	if true, remove "-g" from flags
`disable.asserts`	if true, set NDEBUG define
`suppress.warnings`	if true, suppress compiler warnings
`overwrite`	if true, overwrite existing Makevars file

This function will change the optimization flags used when compiling code. It will write the file "Makevars" to the ".R" directory in your "$HOME" directory. These setting will effect all subsequent compiles, even package installation, unless you remove or edit the "Makevars" file.

This function assumes that your compiler uses "-O" to indicate optimization level and "-g" to indicate that the compiler should issue debugging symbols.

Please let me know if this function fails for your compiler. (Submit and issue on GitHub.)

Don't go overboard. Levels greater than 3 can be hazardous to numerical accuracy. Some packages will not compile or will give inaccurate results for levels above 2.

A very similar function exists in the RStan package.

Timothy H. Keitt

compile_sys

odeintr documentation built on May 2, 2019, 2:08 a.m.