1 files changed, 23 insertions, 2 deletions
diff --git a/internal/rational.h b/internal/rational.h
index e53ee7b499..6861a90130 100644
--- a/internal/rational.h
+++ b/internal/rational.h
@@ -1,7 +1,6 @@
 #ifndef INTERNAL_RATIONAL_H                              /*-*-C-*-vi:se ft=c:*/
 #define INTERNAL_RATIONAL_H
 /**
- * @file
  * @author     Ruby developers <ruby-core@ruby-lang.org>
  * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
  *             Permission  is hereby  granted,  to  either redistribute  and/or
@@ -11,7 +10,6 @@
  */
 #include "ruby/internal/config.h"      /* for HAVE_LIBGMP */
 #include "ruby/ruby.h"          /* for struct RBasic */
-#include "internal/gc.h"        /* for RB_OBJ_WRITE */
 #include "internal/numeric.h"   /* for INT_POSITIVE_P */
 #include "ruby_assert.h"        /* for assert */
 
@@ -30,14 +28,19 @@ VALUE rb_rational_plus(VALUE self, VALUE other);
 VALUE rb_rational_minus(VALUE self, VALUE other);
 VALUE rb_rational_mul(VALUE self, VALUE other);
 VALUE rb_rational_div(VALUE self, VALUE other);
+VALUE rb_rational_fdiv(VALUE self, VALUE other);
 VALUE rb_lcm(VALUE x, VALUE y);
 VALUE rb_rational_reciprocal(VALUE x);
 VALUE rb_cstr_to_rat(const char *, int);
+VALUE rb_rational_hash(VALUE self);
 VALUE rb_rational_abs(VALUE self);
 VALUE rb_rational_cmp(VALUE self, VALUE other);
 VALUE rb_rational_pow(VALUE self, VALUE other);
 VALUE rb_rational_floor(VALUE self, int ndigits);
 VALUE rb_numeric_quo(VALUE x, VALUE y);
+VALUE rb_flo_round_by_rational(VALUE num, int ndigits, enum ruby_num_rounding_mode mode);
+VALUE rb_flo_ceil_by_rational(VALUE num, int ndigits);
+VALUE rb_flo_floor_by_rational(VALUE num, int ndigits);
 VALUE rb_float_numerator(VALUE x);
 VALUE rb_float_denominator(VALUE x);
 
@@ -68,4 +71,22 @@ RATIONAL_SET_DEN(VALUE r, VALUE d)
     RB_OBJ_WRITE(r, &RRATIONAL(r)->den, d);
 }
 
+inline static bool
+f_zero_p(VALUE x)
+{
+    if (RB_INTEGER_TYPE_P(x)) {
+        return FIXNUM_ZERO_P(x);
+    }
+    else if (RB_FLOAT_TYPE_P(x)) {
+        return FLOAT_ZERO_P(x);
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL)) {
+        const VALUE num = RRATIONAL(x)->num;
+        return FIXNUM_ZERO_P(num);
+    }
+    return rb_equal(x, INT2FIX(0)) != 0;
+}
+
+#define f_nonzero_p(x) (!f_zero_p(x))
+
 #endif /* INTERNAL_RATIONAL_H */