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  is integer (with overflow, which occurs at
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  is integer (with overflow, which occurs at
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  \eqn{\pm(2^{31} - 1)}{+/- (2^31 - 1)},
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  \eqn{\pm(2^{31} - 1)}{+/- (2^31 - 1)},
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  returned as \code{NA_integer_} with a warning).
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  returned as \code{NA_integer_} with a warning).
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  The rules for determining the attributes of the result are rather
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  The rules for determining the attributes of the result are rather
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  complicated.  Most attributes are taken from the longer argument, the
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  complicated.  Most attributes are taken from the longer argument.
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  Names will be copied from the first if it is the same length as the
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  answer, otherwise from the second if that is.  If the arguments are
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  first if they are of the same length.  Names will be copied from the
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  the same length, attributes will be copied from both, with those of
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  first if it is the same length as the answer, otherwise from the
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  the first argument taking precedence when the same attribute is
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  second if that is.  For time series, these operations are allowed only
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  present in both arguments. For time series, these operations are
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  if the series are compatible, when the class and \code{\link{tsp}}
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  allowed only if the series are compatible, when the class and
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  attribute of whichever is a time series (the same, if both are) are
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  \code{\link{tsp}} attribute of whichever is a time series (the same,
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  used.  For arrays (and an array result) the dimensions and dimnames
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  if both are) are used.  For arrays (and an array result) the
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  are taken from first argument if it is an array, otherwise the second.
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  dimensions and dimnames are taken from first argument if it is an
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  array, otherwise the second.
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}
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}
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\details{
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\details{
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  The binary arithmetic operators are generic functions: methods can be
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  The binary arithmetic operators are generic functions: methods can be
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  written for them individually or via the
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  written for them individually or via the
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  \code{\link[=S3groupGeneric]{Ops}} group generic function.  (See
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  \code{\link[=S3groupGeneric]{Ops}} group generic function.  (See