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\name{checksolver}
\alias{checksolver}
\encoding{UTF-8}
\title{Test if requested solver is present}
\concept{minimization}
\concept{maximization}
\description{
Test if requested solver is present.
}
\usage{
checksolver(method, allmeth, allpkg)
}
\arguments{
\item{method}{Character string giving the name of the solver requested.}
\item{allmeth}{Character vector giving the names of the methods optimr can use.}
\item{allpkg}{Character vector giving the names of the packages where
solvers are found.}
}
\value{
\code{checksolver} tests if requested function minimization solver is present.
}
\examples{
allmeth <- c("Rvmmin", "nlminb","ipopttest")
allpkg <- c("Rvmmin", "stats","ipoptr")
print(checksolver("nlminb", allmeth, allpkg))
# If Rvmmin NOT available, get msg that PACKAGE not available.
print(checksolver("Rvmmin", allmeth, allpkg))
# Get message that SOLVER not found
print(checksolver("notasolver", allmeth, allpkg))
}
\keyword{nonlinear}
\keyword{optimize}
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