include/ruby/backward/2/r_cast.h: deprecate

Remove all usages of RCAST() so that the header file can be excluded
from ruby/ruby.h's dependency.

1 files changed, 1 insertions, 1 deletions

diff --git a/internal/numeric.h b/internal/numeric.h
index 7045896c61..fa24927551 100644
--- a/internal/numeric.h
+++ b/internal/numeric.h
@@ -41,7 +41,7 @@ struct RFloat {
     double float_value;
 };
 
-#define RFLOAT(obj)  (R_CAST(RFloat)(obj))
+#define RFLOAT(obj)  ((struct RFloat *)(obj))
 
 /* numeric.c */
 int rb_num_to_uint(VALUE val, unsigned int *ret);