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Hi! The description in libm test README is quite confusing, because the tests append to ULPs file instead of overwriting it each time, so there is no need to move and concat the files together, on the other side it is needed to remove pre-existing ULPs file before starting the tests. 2004-03-24 Jakub Jelinek <jakub@redhat.com> * math/README.libm-test: Adjust description, since test-* append to ULPs instead of overwriting it. --- libc/math/README.libm-test.jj 1999-10-25 22:12:32.000000000 +0200 +++ libc/math/README.libm-test 2004-03-24 13:31:19.336961745 +0100 @@ -45,15 +45,15 @@ but it's better to pretty print it first to generate a pretty-printed and sorted new ULPs file from the output of the test drivers. -To generate a new "libm-test-ulps" file, you can execute for example: +To generate a new "libm-test-ulps" file, first remove "ULPs" file in the +current directory, then you can execute for example: test-double -u --ignore-max-ulp=yes This generates a file "ULPs" with all double ULPs in it, ignoring any previous calculated ULPs. -Now move this away, e.g. "mv ULPs allULPs" and generate the ULPs -for all other formats and concat all ULP files together (e.g. "cat -ULPs >> allULPs"). As final step run "gen-libm-test.pl" with the file -as input and ask to generate a pretty printed output in the file "NewUlps": - gen-libm-test.pl -u allULPs -n +Now generate the ULPs for all other formats, the tests will be appending +the data to the "ULPs" file. As final step run "gen-libm-test.pl" with the +file as input and ask to generate a pretty printed output in the file "NewUlps": + gen-libm-test.pl -u ULPs -n Now you can rename "NewUlps" to "libm-test-ulps" and move it into sysdeps. Jakub
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