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-rw-r--r--mrbgems/mruby-math/src/math.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/mrbgems/mruby-math/src/math.c b/mrbgems/mruby-math/src/math.c
index caa16b789..35fcd0fa6 100644
--- a/mrbgems/mruby-math/src/math.c
+++ b/mrbgems/mruby-math/src/math.c
@@ -4,6 +4,10 @@
** See Copyright Notice in mruby.h
*/
+#ifdef MRB_WITHOUT_FLOAT
+# error Conflict 'MRB_WITHOUT_FLOAT' configuration in your 'build_config.rb'
+#endif
+
#include <mruby.h>
#include <mruby/array.h>