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  Real values larger in modulus than the largest integer are coerced to
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  Real values larger in modulus than the largest integer are coerced to
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  \code{NA} (unlike S which gives the most extreme integer of the same sign).
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  \code{NA} (unlike S which gives the most extreme integer of the same sign).
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  Non-integral numeric values are truncated towards zero (i.e.,
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  Non-integral numeric values are truncated towards zero (i.e.,
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  \code{as.integer(x)} equals \code{\link{trunc}(x)} there), and
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  \code{as.integer(x)} equals \code{\link{trunc}(x)} there), and
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  imaginary parts of complex numbers are discarded (with a warning).
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  imaginary parts of complex numbers are discarded (with a warning).
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  Character strings containing either a decimal representation or a
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  heaxadecimal representation (starting with \code{0x} or \code{0X}) can
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  be converted, as well as any allowed by the platform for real numbers.
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  Like \code{\link{as.vector}} it strips attributes including names.
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  Like \code{\link{as.vector}} it strips attributes including names.
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  \code{is.integer} returns \code{TRUE} or \code{FALSE} depending on
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  \code{is.integer} returns \code{TRUE} or \code{FALSE} depending on
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  whether its argument is of integer type or not.
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  whether its argument is of integer type or not.
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  \code{is.integer} is generic: you can write methods to handle
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  \code{is.integer} is generic: you can write methods to handle