{Real,Complex}Ball: rename abs() to __abs__()

Element already defines a generic abs() that calls __abs__().
sagemath · Oct 16, 2015 · 202f64c · 202f64c
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commit 202f64c
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diff --git a/src/sage/rings/complex_ball_acb.pyx b/src/sage/rings/complex_ball_acb.pyx
@@ -987,15 +987,18 @@ cdef class ComplexBall(RingElement):
         arb_set(r.value, acb_imagref(self.value))
         return r
 
-    def abs(self):
+    def __abs__(self):
         """
         Return the absolute value of this complex ball.
 
         EXAMPLES::
 
             sage: from sage.rings.complex_ball_acb import CBF
-            sage: CBF(1 + i).abs()
+            sage: CBF(1 + i).abs() # indirect doctest
             [1.414213562373095 +/- 2.99e-16]
+            sage: abs(CBF(i))
+            1.000000000000000
+
             sage: CBF(1 + i).abs().parent()
             Real ball field with 53 bits precision
         """

diff --git a/src/sage/rings/real_arb.pyx b/src/sage/rings/real_arb.pyx
@@ -1374,15 +1374,17 @@ cdef class RealBall(RingElement):
         mag_zero(arb_radref(res.value))
         return res
 
-    def abs(self):
+    def __abs__(self):
         """
         Return the absolute value of this ball.
 
         EXAMPLES::
 
             sage: from sage.rings.real_arb import RBF
-            sage: RBF(-1/3).abs()
+            sage: RBF(-1/3).abs() # indirect doctest
             [0.3333333333333333 +/- 7.04e-17]
+            sage: abs(RBF(-1))
+            1.000000000000000
         """
         cdef RealBall r = self._new()
         arb_abs(r.value, self.value)