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-rw-r--r--internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index 3ceca669c9..e68e078e86 100644
--- a/internal.h
+++ b/internal.h
@@ -1013,6 +1013,7 @@ VALUE rb_int_minus(VALUE x, VALUE y);
VALUE rb_int_mul(VALUE x, VALUE y);
VALUE rb_int_idiv(VALUE x, VALUE y);
VALUE rb_int_modulo(VALUE x, VALUE y);
+VALUE rb_int_round(VALUE num, int ndigits);
VALUE rb_dbl_hash(double d);
VALUE rb_fix_plus(VALUE x, VALUE y);