Displaying 1 result from an estimated 1 matches for "inttoraw".
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into_raw
2009 May 15
0
Converting numbers to and from raw
...n I convert an integer or double to and from their internal
representation as raws of length 4 and 8?
The following works for positive integers (including those represented
as floats):
# Convert integer (represented as integer or double) to sequence
# of raw bytes, least-significant byte first.
# intToRaw(0) => raw(0)
# intToRaw(17^9) => 91 64 63 9c 1b
# intToRaw(2^60/3) => 40 55 55 55 55 55 55 05 (note effect of finite precision)
intToRaw <- function(x, n=max(0,floor(log(x)/log(256)+1))) {
stopifnot(x>=0)
suppressWarnings(
as.raw( floor( x / 2^(8*seq(0,length=n)) ) %% 256...