copysignf: Don't override undeclared system function on IRIX 6.5.

[gnulib.git] / ChangeLog

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@@ -1,3 +1,17 @@
+2012-03-07  Bruno Haible  <bruno@clisp.org>
+
+       copysignf: Don't override undeclared system function on IRIX 6.5.
+       * lib/math.in.h (copysignf): Test HAVE_DECL_COPYSIGNF, not
+       HAVE_COPYSIGNF.
+       * m4/copysignf.m4 (gl_FUNC_COPYSIGNF): Don't assume copysignf() is
+       declared when it exists. Set HAVE_DECL_COPYSIGNF.
+       * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize HAVE_DECL_COPYSIGNF,
+       not HAVE_COPYSIGNF.
+       * modules/math (Makefile.am): Substitute HAVE_DECL_COPYSIGNF, not
+       HAVE_COPYSIGNF.
+       * doc/posix-functions/copysignf.texi: Mention missing declaration
+       problem.
+
 2012-03-07  Jim Meyering  <meyering@redhat.com>
 
        readtokens: add tests