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+2011-06-19  Bruno Haible  <bruno@clisp.org>
+
+	ceilf-ieee: Work around bug on MacOS X 10.5.
+	* doc/posix-functions/ceilf.texi: Mention the MacOS X 10.5 problem.
+
+	floor*-ieee, ceil*-ieee, trunc*-ieee, round*-ieee: More robust checks.
+	* m4/floorf.m4 (gl_FUNC_FLOORF): In the test whether the function is
+	IEEE compliant, avoid compiler optimizations.
+	* m4/floor.m4 (gl_FUNC_FLOOR): Likewise.
+	* m4/ceilf.m4 (gl_FUNC_CEILF): Likewise.
+	* m4/ceil.m4 (gl_FUNC_CEIL): Likewise.
+	* m4/ceill.m4 (gl_FUNC_CEILL): Likewise.
+	* m4/truncf.m4 (gl_FUNC_TRUNCF): Likewise.
+	* m4/trunc.m4 (gl_FUNC_TRUNC): Likewise.
+	* m4/truncl.m4 (gl_FUNC_TRUNCL): Likewise.
+	* m4/roundf.m4 (gl_FUNC_ROUNDF): Likewise.
+	* m4/round.m4 (gl_FUNC_ROUND): Likewise.
+	* m4/roundl.m4 (gl_FUNC_ROUNDL): Likewise.
+
 2011-06-19  Bruno Haible  <bruno@clisp.org>
 
 	ceilf-ieee: Work around bug on AIX 7.1.