RustPython
diff --git a/‎Lib/_pydecimal.py
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+16-11Lines changed: 16 additions & 11 deletions b/‎Lib/_pydecimal.py
Copy file name to clipboardExpand all lines: Lib/_pydecimal.py
+16-11Lines changed: 16 additions & 11 deletions
diff --git a/‎Lib/test/test_decimal.py
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-2Lines changed: 0 additions & 2 deletions b/‎Lib/test/test_decimal.py
Copy file name to clipboardExpand all lines: Lib/test/test_decimal.py
-2Lines changed: 0 additions & 2 deletions
@@ -734,18 +734,23 @@ def from_float(cls, f):
 
         """
         if isinstance(f, int):                # handle integer inputs
-            return cls(f)
-        if not isinstance(f, float):
-            raise TypeError("argument must be int or float.")
-        if _math.isinf(f) or _math.isnan(f):
-            return cls(repr(f))
-        if _math.copysign(1.0, f) == 1.0:
-            sign = 0
+            sign = 0 if f >= 0 else 1
+            k = 0
+            coeff = str(abs(f))
+        elif isinstance(f, float):
+            if _math.isinf(f) or _math.isnan(f):
+                return cls(repr(f))
+            if _math.copysign(1.0, f) == 1.0:
+                sign = 0
+            else:
+                sign = 1
+            n, d = abs(f).as_integer_ratio()
+            k = d.bit_length() - 1
+            coeff = str(n*5**k)
         else:
-            sign = 1
-        n, d = abs(f).as_integer_ratio()
-        k = d.bit_length() - 1
-        result = _dec_from_triple(sign, str(n*5**k), -k)
+            raise TypeError("argument must be int or float.")
+
+        result = _dec_from_triple(sign, coeff, -k)
         if cls is Decimal:
             return result
         else:
 
@@ -1257,8 +1257,6 @@ def test_wide_char_separator_decimal_point(self):
         self.assertEqual(format(Decimal('100000000.123'), 'n'),
                          '100\u066c000\u066c000\u066b123')
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_decimal_from_float_argument_type(self):
         class A(self.decimal.Decimal):
             def __init__(self, a):