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This directory contains ratfor source for the several routines of the rq library. These are not strictly necessary, but they may prove useful to anyone wanting to look at the source in detail, since the fortran translation of them by the ratfor compiler is far from readable. Note added September 17, 2004 Apparently g77 v3.4 doesn't like double precision data statements so these have been changed to parameter() declarations. This turned out to be a bug in g77, but the deed is done so I've left the parameter statements in place of the original data statements. However, this entailed the dangerous step of installing the SEP ratfor77 translator. (See http://sepwww.stanford.edu/software/ratfor.html for details.) Past experience, and now a bug file in the SEP distro, suggests that the ratfor switch statement is unlikely to be correctly handled. Fortunately, none of the included routines in the directory use switch but caution is undoubtedly indicated. The fortran produced for rqbr.r is somewhat different than that produced by my older sun version, and generates two warnings from g77, but these appear to be harmless. Note added March 16, 2005 g77 has been issuing warnings for the code generated from the SEP distro of ratfor version of rqbr.r for a while now, but yesterday Jan deLeeuw reported that it now generates an error in his gfortran 4.0 on osx. After some comparisons with old version of the ratfor translation, in particular the rq.f in rq/statlib.95 on ysidro, I determined that what the compiler didn't like was the way that if-endifs were generated by the SEP translation. So.... I hand edited these last few if-endifs in the .f file, and move that back into the src directory. This is TOTALLY unsatisfactory, since it means that this needs to be done yet again if any changes are made to the ratfor code, but seems to be the cost of using the SEP translator. A more clever guy with more time could probably find a way to change the ratfor, but given other constraints that ain't going to happen anytime soon. Note that I've for future reference put a version of the old rq.f file generated by my old BTL ratfor translator into this directory. as well as the new rqbr.f. Note added Oct 22, 2007 As part of the development of the crqfnb function I downloaded the SEP version of ratfor77, which seems to work ok on this function. It is installed in my $HOME/bin directory and the build is in the Rinstall directory. Note that now on yzzy ratfor is called ratfor77. Note added May 14, 2016 Contrary to the last note, it appears that my $HOME/bin/ratfor command works and $HOME/bin/ratfor77 does not.