+# FP_GCC_HAS_WRAPV
+# --------------------------
+AC_DEFUN([FP_GCC_HAS_WRAPV],
+[AC_REQUIRE([FP_HAVE_GCC])
+AC_CACHE_CHECK([whether gcc has -fwrapv], [fp_cv_gcc_has_wrapv],
+[FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.4],
+ [fp_cv_gcc_has_wrapv=yes],
+ [fp_cv_gcc_has_wrapv=no])])
+if test "$fp_cv_gcc_has_wrapv" = "yes"; then
+ AC_DEFINE([HAVE_GCC_HAS_WRAPV], [1], [Define to 1 if gcc supports -fwrapv.])
+fi])
+