Returns the version of Octave currently used by
RcppOctave.
o_version(version)
Octave version as a single character string or the result
of compareVersion if argument
version is provided.
## Don't show:
# roxygen generated flag
options(R_CHECK_RUNNING_EXAMPLES_=TRUE)
## End Don't show
o_version()
## [1] "3.6.4"
o_version("3.6.2")
## [1] 1
o_version("3.4")
## [1] 1