fmpq: use fmpq_cmp for <,<=,>,>=

Author: oscarbenjamin

src/flint/test/test_all.py

@@ -772,6 +772,7 @@ def test_fmpq():
     assert raises(lambda: Q([]), TypeError)
     assert raises(lambda: Q(1, []), TypeError)
     assert raises(lambda: Q([], 1), TypeError)
+    assert raises(lambda: Q(1, 1, 1), TypeError)
     assert bool(Q(0)) == False
     assert bool(Q(1)) == True
     assert Q(1,3) + Q(2,3) == 1

src/flint/types/fmpq.pyx

@@ -107,9 +107,6 @@ cdef class fmpq(flint_scalar):
 
     def __richcmp__(s, t, int op):
         cdef bint res
-        s = any_as_fmpq(s)
-        if s is NotImplemented:
-            return s
         t = any_as_fmpq(t)
         if t is NotImplemented:
             return t
@@ -119,12 +116,12 @@ cdef class fmpq(flint_scalar):
                 res = not res
             return res
         else:
-            # todo: use fmpq_cmp when available
-            if op == 0: res = (s-t).p < 0
-            elif op == 1: res = (s-t).p <= 0
-            elif op == 4: res = (s-t).p > 0
-            elif op == 5: res = (s-t).p >= 0
-            else: raise ValueError
+            res = fmpq_cmp(s.val, (<fmpq>t).val)
+            if op == 0: res = res < 0
+            elif op == 1: res = res <= 0
+            elif op == 4: res = res > 0
+            elif op == 5: res = res >= 0
+            else: assert False
             return res
 
     def numer(self):
@@ -437,9 +434,9 @@ cdef class fmpq(flint_scalar):
         import sys
         from fractions import Fraction
         if sys.version_info < (3, 12):
-            return hash(Fraction(int(self.p), int(self.q), _normalize=False))
+            return hash(Fraction(int(self.p), int(self.q), _normalize=False))  # pragma: no cover
         else:
-            return hash(Fraction._from_coprime_ints(int(self.p), int(self.q)))
+            return hash(Fraction._from_coprime_ints(int(self.p), int(self.q))) # pragma: no cover
 
     def height_bits(self, bint signed=False):
         """