roundf-ieee: Fix test failures on AIX 7.1 and OSF/1 5.1.

[pspp] / ChangeLog

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+2011-06-19  Bruno Haible  <bruno@clisp.org>
+
+       roundf-ieee: Fix test failures on AIX 7.1 and OSF/1 5.1.
+       * m4/roundf.m4 (gl_FUNC_ROUNDF): Test also the sign of roundf (-0.3f).
+       * modules/roundf-ieee (Depends-on): Add floorf-ieee, ceilf-ieee.
+       * doc/posix-functions/roundf.texi: Mention problem with negative
+       arguments.
+       * doc/posix-functions/ceilf.texi: Mention problem on OSF/1 5.1.
+
 2011-06-19  Bruno Haible  <bruno@clisp.org>
 
        ceilf-ieee: Work around bug on MacOS X 10.5.