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-rw-r--r--unix/configure.ac12
1 files changed, 0 insertions, 12 deletions
diff --git a/unix/configure.ac b/unix/configure.ac
index 335c5a2..7acb5ce 100644
--- a/unix/configure.ac
+++ b/unix/configure.ac
@@ -562,18 +562,6 @@ SC_ENABLE_LANGINFO
AC_CHECK_FUNCS(cfmakeraw chflags mkstemps)
#--------------------------------------------------------------------
-# Check for support of isnan() function or macro
-#--------------------------------------------------------------------
-
-AC_CACHE_CHECK([isnan], tcl_cv_isnan, [
- AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]], [[
-isnan(0.0); /* Generates an error if isnan is missing */
-]])],[tcl_cv_isnan=yes],[tcl_cv_isnan=no])])
-if test $tcl_cv_isnan = no; then
- AC_DEFINE(NO_ISNAN, 1, [Do we have a usable 'isnan'?])
-fi
-
-#--------------------------------------------------------------------
# Darwin specific API checks and defines
#--------------------------------------------------------------------