Show how to remove exponents.
diff --git a/Doc/library/decimal.rst b/Doc/library/decimal.rst
index 2f191bd..0a8262d 100644
--- a/Doc/library/decimal.rst
+++ b/Doc/library/decimal.rst
@@ -1590,6 +1590,7 @@
... return (x * y).quantize(fp)
>>> def div(x, y, fp=TWOPLACES):
... return (x / y).quantize(fp)
+
>>> mul(a, b) # Automatically preserve fixed-point
Decimal('325.62')
>>> div(b, a)
@@ -1615,6 +1616,16 @@
:const:`5.0E+3` as :const:`5000` keeps the value constant but cannot show the
original's two-place significance.
+If an application does not care about tracking significance, it is easy to
+remove the exponent and trailing zeroes, losing signficance, but keeping the
+value unchanged::
+
+ >>> def remove_exponent(d):
+ ... return d.quantize(Decimal(1)) if d == d.to_integral() else d.normalize()
+
+ >>> remove_exponent(Decimal('5E+3'))
+ Decimal('5000')
+
Q. Is there a way to convert a regular float to a :class:`Decimal`?
A. Yes, all binary floating point numbers can be exactly expressed as a