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Hi, it would be great, if the sftp protocol could be enhanced: get sha (or other hash value) from a file or part of a file. This would make it possible to run a rsync like file transfer on sftp. I would suggest a protocol like this Client sends to Server: get-supported hash-methods returns whitespace seperated list like md5 sha1 sha256 .... get-hash HASH-METHOD FILENAME STARTOFFSET

I am a newbie to C (although I did some programming in Perl and Pascal) so forgive me for the language that follows. I am writing because I have a question concerning the *implementation of *(the internal function)* cwilcox* in https://svn.r-project.org/R/!svn/bc/81274/branches/R-DL/src/nmath/wilcox.c. This function is used to determine the test statistics of the Wilcoxon-Mann-Whitney U-test.