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log2-ieee: Work around test failure on NetBSD 5.1 and Solaris 10. * m4/log2-ieee.m4: New file. * m4/log2.m4 (gl_FUNC_LOG2): If gl_FUNC_LOG2_IEEE is present, test whether log2 works with a minus zero argument. Replace it if not. * modules/log2-ieee (Files): Add m4/log2-ieee.m4. (configure.ac): Invoke gl_FUNC_LOG2_IEEE. * doc/posix-functions/log2.texi: Mention the log2-ieee module.
author Bruno Haible <bruno@clisp.org>
date Sun, 11 Mar 2012 22:12:34 +0100
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children e542fd46ad6f
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# log2-ieee.m4 serial 1
dnl Copyright (C) 2012 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

dnl This macro is in a separate file (not in remainder.m4 and not inlined in the
dnl module description), so that gl_FUNC_LOG2 can test whether 'aclocal' has
dnl found uses of this macro.

AC_DEFUN([gl_FUNC_LOG2_IEEE],
[
  m4_divert_text([INIT_PREPARE], [gl_log2_required=ieee])
  AC_REQUIRE([gl_FUNC_LOG2])
])