AC_CXX_HAVE_COMPLEX
, 
, 

2004年02月04日

Todd Veldhuizen Luc Maisonobe <luc@spaceroots.org>

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Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. Users of this software should generally follow the principles of the MIT License includings its disclaimer.

cryp.to ac-archive's C++ Support (released)

If the compiler has complex<T>, define HAVE_COMPLEX.

AC_DEFUN([AC_CXX_HAVE_COMPLEX],
[AC_CACHE_CHECK(whether the compiler has complex<T>,
ac_cv_cxx_have_complex,
[AC_REQUIRE([AC_CXX_NAMESPACES])
 AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 AC_TRY_COMPILE([#include <complex>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif],[complex<float> a; complex<double> b; return 0;],
 ac_cv_cxx_have_complex=yes, ac_cv_cxx_have_complex=no)
 AC_LANG_RESTORE
])
if test "$ac_cv_cxx_have_complex" = yes; then
 AC_DEFINE(HAVE_COMPLEX,,[define if the compiler has complex<T>])
fi
])