Allow type complex input in ComplexNumber()

sagemath · Mar 15, 2017 · c1995f1 · c1995f1
1 parent 457b950
commit c1995f1
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/sage/rings/complex_number.pyx b/src/sage/rings/complex_number.pyx
@@ -2481,11 +2481,18 @@ def create_ComplexNumber(s_real, s_imag=None, int pad=0, min_prec=53):
         False
         sage: sage.rings.complex_number.create_ComplexNumber(0,s).imag()-1 == 0
         False
+        sage: sage.rings.complex_number.create_ComplexNumber(complex('13.8+6.2j')) == CC(complex('13.8+6.2j'))
+        True
 
     """
     if s_imag is None:
         s_imag = 0
 
+    if isinstance(s_real, complex):
+        from .complex_field import ComplexField
+        C = ComplexField(prec=min_prec)
+        return C(s_real.real, s_real.imag)
+
     if not isinstance(s_real, str):
         s_real = str(s_real).strip()
     if not isinstance(s_imag, str):