* Make the tests independent of the default precision.
* Change the default precision to 28 (to match VB's decimal type).
diff --git a/Lib/decimal.py b/Lib/decimal.py
index 973f110..808a1f0 100644
--- a/Lib/decimal.py
+++ b/Lib/decimal.py
@@ -10,7 +10,6 @@
# Todo:
# Provide a clean way of attaching monetary format representations
-# Make tests independent of DefaultContext.prec == 9
"""
@@ -41,6 +40,7 @@
Here are some examples of using the decimal module:
>>> from decimal import *
+>>> getcontext().prec=9
>>> Decimal(0)
Decimal("0")
>>> Decimal("1")
@@ -129,7 +129,7 @@
'Underflow',
# Module parameters
- 'SINGLE_PRECISION', 'DEFAULT_MAX_EXPONENT', 'DEFAULT_MIN_EXPONENT',
+ 'DEFAULT_MAX_EXPONENT', 'DEFAULT_MIN_EXPONENT',
# Constants for use in setting up contexts
'ROUND_DOWN', 'ROUND_HALF_UP', 'ROUND_HALF_EVEN', 'ROUND_CEILING',
@@ -149,9 +149,6 @@
import operator
xor = operator.xor
-#Precision
-SINGLE_PRECISION = 9
-
#Exponent Range
DEFAULT_MAX_EXPONENT = 999999999
DEFAULT_MIN_EXPONENT = -999999999
@@ -425,6 +422,8 @@
def setcontext(context):
"""Set this thread's context to context."""
+ if context == DefaultContext:
+ context = Context()
threading.currentThread().__decimal_context__ = context
def getcontext():
@@ -2265,13 +2264,13 @@
operation on the operand. Otherwise, the result is the same as using
the plus operation on the operand.
- >>> DefaultContext.abs(Decimal('2.1'))
+ >>> ExtendedDefaultContext.abs(Decimal('2.1'))
Decimal("2.1")
- >>> DefaultContext.abs(Decimal('-100'))
+ >>> ExtendedDefaultContext.abs(Decimal('-100'))
Decimal("100")
- >>> DefaultContext.abs(Decimal('101.5'))
+ >>> ExtendedDefaultContext.abs(Decimal('101.5'))
Decimal("101.5")
- >>> DefaultContext.abs(Decimal('-101.5'))
+ >>> ExtendedDefaultContext.abs(Decimal('-101.5'))
Decimal("101.5")
"""
return a.__abs__(context=self)
@@ -2279,9 +2278,9 @@
def add(self, a, b):
"""Return the sum of the two operands.
- >>> DefaultContext.add(Decimal('12'), Decimal('7.00'))
+ >>> ExtendedDefaultContext.add(Decimal('12'), Decimal('7.00'))
Decimal("19.00")
- >>> DefaultContext.add(Decimal('1E+2'), Decimal('1.01E+4'))
+ >>> ExtendedDefaultContext.add(Decimal('1E+2'), Decimal('1.01E+4'))
Decimal("1.02E+4")
"""
return a.__add__(b, context=self)
@@ -2303,17 +2302,17 @@
subtraction: '-1' if the result is less than zero, '0' if the result is
zero or negative zero, or '1' if the result is greater than zero.
- >>> DefaultContext.compare(Decimal('2.1'), Decimal('3'))
+ >>> ExtendedDefaultContext.compare(Decimal('2.1'), Decimal('3'))
Decimal("-1")
- >>> DefaultContext.compare(Decimal('2.1'), Decimal('2.1'))
+ >>> ExtendedDefaultContext.compare(Decimal('2.1'), Decimal('2.1'))
Decimal("0")
- >>> DefaultContext.compare(Decimal('2.1'), Decimal('2.10'))
+ >>> ExtendedDefaultContext.compare(Decimal('2.1'), Decimal('2.10'))
Decimal("0")
- >>> DefaultContext.compare(Decimal('3'), Decimal('2.1'))
+ >>> ExtendedDefaultContext.compare(Decimal('3'), Decimal('2.1'))
Decimal("1")
- >>> DefaultContext.compare(Decimal('2.1'), Decimal('-3'))
+ >>> ExtendedDefaultContext.compare(Decimal('2.1'), Decimal('-3'))
Decimal("1")
- >>> DefaultContext.compare(Decimal('-3'), Decimal('2.1'))
+ >>> ExtendedDefaultContext.compare(Decimal('-3'), Decimal('2.1'))
Decimal("-1")
"""
return a.compare(b, context=self)
@@ -2321,25 +2320,25 @@
def divide(self, a, b):
"""Decimal division in a specified context.
- >>> DefaultContext.divide(Decimal('1'), Decimal('3'))
+ >>> ExtendedDefaultContext.divide(Decimal('1'), Decimal('3'))
Decimal("0.333333333")
- >>> DefaultContext.divide(Decimal('2'), Decimal('3'))
+ >>> ExtendedDefaultContext.divide(Decimal('2'), Decimal('3'))
Decimal("0.666666667")
- >>> DefaultContext.divide(Decimal('5'), Decimal('2'))
+ >>> ExtendedDefaultContext.divide(Decimal('5'), Decimal('2'))
Decimal("2.5")
- >>> DefaultContext.divide(Decimal('1'), Decimal('10'))
+ >>> ExtendedDefaultContext.divide(Decimal('1'), Decimal('10'))
Decimal("0.1")
- >>> DefaultContext.divide(Decimal('12'), Decimal('12'))
+ >>> ExtendedDefaultContext.divide(Decimal('12'), Decimal('12'))
Decimal("1")
- >>> DefaultContext.divide(Decimal('8.00'), Decimal('2'))
+ >>> ExtendedDefaultContext.divide(Decimal('8.00'), Decimal('2'))
Decimal("4.00")
- >>> DefaultContext.divide(Decimal('2.400'), Decimal('2.0'))
+ >>> ExtendedDefaultContext.divide(Decimal('2.400'), Decimal('2.0'))
Decimal("1.20")
- >>> DefaultContext.divide(Decimal('1000'), Decimal('100'))
+ >>> ExtendedDefaultContext.divide(Decimal('1000'), Decimal('100'))
Decimal("10")
- >>> DefaultContext.divide(Decimal('1000'), Decimal('1'))
+ >>> ExtendedDefaultContext.divide(Decimal('1000'), Decimal('1'))
Decimal("1000")
- >>> DefaultContext.divide(Decimal('2.40E+6'), Decimal('2'))
+ >>> ExtendedDefaultContext.divide(Decimal('2.40E+6'), Decimal('2'))
Decimal("1.20E+6")
"""
return a.__div__(b, context=self)
@@ -2347,11 +2346,11 @@
def divide_int(self, a, b):
"""Divides two numbers and returns the integer part of the result.
- >>> DefaultContext.divide_int(Decimal('2'), Decimal('3'))
+ >>> ExtendedDefaultContext.divide_int(Decimal('2'), Decimal('3'))
Decimal("0")
- >>> DefaultContext.divide_int(Decimal('10'), Decimal('3'))
+ >>> ExtendedDefaultContext.divide_int(Decimal('10'), Decimal('3'))
Decimal("3")
- >>> DefaultContext.divide_int(Decimal('1'), Decimal('0.3'))
+ >>> ExtendedDefaultContext.divide_int(Decimal('1'), Decimal('0.3'))
Decimal("3")
"""
return a.__floordiv__(b, context=self)
@@ -2368,11 +2367,11 @@
is chosen as the result. Otherwise the maximum (closer to positive
infinity) of the two operands is chosen as the result.
- >>> DefaultContext.max(Decimal('3'), Decimal('2'))
+ >>> ExtendedDefaultContext.max(Decimal('3'), Decimal('2'))
Decimal("3")
- >>> DefaultContext.max(Decimal('-10'), Decimal('3'))
+ >>> ExtendedDefaultContext.max(Decimal('-10'), Decimal('3'))
Decimal("3")
- >>> DefaultContext.max(Decimal('1.0'), Decimal('1'))
+ >>> ExtendedDefaultContext.max(Decimal('1.0'), Decimal('1'))
Decimal("1.0")
"""
return a.max(b, context=self)
@@ -2386,11 +2385,11 @@
is chosen as the result. Otherwise the minimum (closer to negative
infinity) of the two operands is chosen as the result.
- >>> DefaultContext.min(Decimal('3'), Decimal('2'))
+ >>> ExtendedDefaultContext.min(Decimal('3'), Decimal('2'))
Decimal("2")
- >>> DefaultContext.min(Decimal('-10'), Decimal('3'))
+ >>> ExtendedDefaultContext.min(Decimal('-10'), Decimal('3'))
Decimal("-10")
- >>> DefaultContext.min(Decimal('1.0'), Decimal('1'))
+ >>> ExtendedDefaultContext.min(Decimal('1.0'), Decimal('1'))
Decimal("1.0")
"""
return a.min(b, context=self)
@@ -2402,9 +2401,9 @@
operation minus(a) is calculated as subtract('0', a) where the '0'
has the same exponent as the operand.
- >>> DefaultContext.minus(Decimal('1.3'))
+ >>> ExtendedDefaultContext.minus(Decimal('1.3'))
Decimal("-1.3")
- >>> DefaultContext.minus(Decimal('-1.3'))
+ >>> ExtendedDefaultContext.minus(Decimal('-1.3'))
Decimal("1.3")
"""
return a.__neg__(context=self)
@@ -2417,15 +2416,15 @@
resulting in a number which may be as long as the sum of the lengths
of the two operands.
- >>> DefaultContext.multiply(Decimal('1.20'), Decimal('3'))
+ >>> ExtendedDefaultContext.multiply(Decimal('1.20'), Decimal('3'))
Decimal("3.60")
- >>> DefaultContext.multiply(Decimal('7'), Decimal('3'))
+ >>> ExtendedDefaultContext.multiply(Decimal('7'), Decimal('3'))
Decimal("21")
- >>> DefaultContext.multiply(Decimal('0.9'), Decimal('0.8'))
+ >>> ExtendedDefaultContext.multiply(Decimal('0.9'), Decimal('0.8'))
Decimal("0.72")
- >>> DefaultContext.multiply(Decimal('0.9'), Decimal('-0'))
+ >>> ExtendedDefaultContext.multiply(Decimal('0.9'), Decimal('-0'))
Decimal("-0.0")
- >>> DefaultContext.multiply(Decimal('654321'), Decimal('654321'))
+ >>> ExtendedDefaultContext.multiply(Decimal('654321'), Decimal('654321'))
Decimal("4.28135971E+11")
"""
return a.__mul__(b, context=self)
@@ -2436,17 +2435,17 @@
Essentially a plus operation with all trailing zeros removed from the
result.
- >>> DefaultContext.normalize(Decimal('2.1'))
+ >>> ExtendedDefaultContext.normalize(Decimal('2.1'))
Decimal("2.1")
- >>> DefaultContext.normalize(Decimal('-2.0'))
+ >>> ExtendedDefaultContext.normalize(Decimal('-2.0'))
Decimal("-2")
- >>> DefaultContext.normalize(Decimal('1.200'))
+ >>> ExtendedDefaultContext.normalize(Decimal('1.200'))
Decimal("1.2")
- >>> DefaultContext.normalize(Decimal('-120'))
+ >>> ExtendedDefaultContext.normalize(Decimal('-120'))
Decimal("-1.2E+2")
- >>> DefaultContext.normalize(Decimal('120.00'))
+ >>> ExtendedDefaultContext.normalize(Decimal('120.00'))
Decimal("1.2E+2")
- >>> DefaultContext.normalize(Decimal('0.00'))
+ >>> ExtendedDefaultContext.normalize(Decimal('0.00'))
Decimal("0")
"""
return a.normalize(context=self)
@@ -2458,9 +2457,9 @@
operation plus(a) is calculated as add('0', a) where the '0'
has the same exponent as the operand.
- >>> DefaultContext.plus(Decimal('1.3'))
+ >>> ExtendedDefaultContext.plus(Decimal('1.3'))
Decimal("1.3")
- >>> DefaultContext.plus(Decimal('-1.3'))
+ >>> ExtendedDefaultContext.plus(Decimal('-1.3'))
Decimal("-1.3")
"""
return a.__pos__(context=self)
@@ -2483,33 +2482,33 @@
division into 1, the operation is not halted at that point but
continues.
- >>> DefaultContext.power(Decimal('2'), Decimal('3'))
+ >>> ExtendedDefaultContext.power(Decimal('2'), Decimal('3'))
Decimal("8")
- >>> DefaultContext.power(Decimal('2'), Decimal('-3'))
+ >>> ExtendedDefaultContext.power(Decimal('2'), Decimal('-3'))
Decimal("0.125")
- >>> DefaultContext.power(Decimal('1.7'), Decimal('8'))
+ >>> ExtendedDefaultContext.power(Decimal('1.7'), Decimal('8'))
Decimal("69.7575744")
- >>> DefaultContext.power(Decimal('Infinity'), Decimal('-2'))
+ >>> ExtendedDefaultContext.power(Decimal('Infinity'), Decimal('-2'))
Decimal("0")
- >>> DefaultContext.power(Decimal('Infinity'), Decimal('-1'))
+ >>> ExtendedDefaultContext.power(Decimal('Infinity'), Decimal('-1'))
Decimal("0")
- >>> DefaultContext.power(Decimal('Infinity'), Decimal('0'))
+ >>> ExtendedDefaultContext.power(Decimal('Infinity'), Decimal('0'))
Decimal("1")
- >>> DefaultContext.power(Decimal('Infinity'), Decimal('1'))
+ >>> ExtendedDefaultContext.power(Decimal('Infinity'), Decimal('1'))
Decimal("Infinity")
- >>> DefaultContext.power(Decimal('Infinity'), Decimal('2'))
+ >>> ExtendedDefaultContext.power(Decimal('Infinity'), Decimal('2'))
Decimal("Infinity")
- >>> DefaultContext.power(Decimal('-Infinity'), Decimal('-2'))
+ >>> ExtendedDefaultContext.power(Decimal('-Infinity'), Decimal('-2'))
Decimal("0")
- >>> DefaultContext.power(Decimal('-Infinity'), Decimal('-1'))
+ >>> ExtendedDefaultContext.power(Decimal('-Infinity'), Decimal('-1'))
Decimal("-0")
- >>> DefaultContext.power(Decimal('-Infinity'), Decimal('0'))
+ >>> ExtendedDefaultContext.power(Decimal('-Infinity'), Decimal('0'))
Decimal("1")
- >>> DefaultContext.power(Decimal('-Infinity'), Decimal('1'))
+ >>> ExtendedDefaultContext.power(Decimal('-Infinity'), Decimal('1'))
Decimal("-Infinity")
- >>> DefaultContext.power(Decimal('-Infinity'), Decimal('2'))
+ >>> ExtendedDefaultContext.power(Decimal('-Infinity'), Decimal('2'))
Decimal("Infinity")
- >>> DefaultContext.power(Decimal('0'), Decimal('0'))
+ >>> ExtendedDefaultContext.power(Decimal('0'), Decimal('0'))
Decimal("NaN")
"""
return a.__pow__(b, modulo, context=self)
@@ -2532,35 +2531,35 @@
Also unlike other operations, quantize will never raise Underflow, even
if the result is subnormal and inexact.
- >>> DefaultContext.quantize(Decimal('2.17'), Decimal('0.001'))
+ >>> ExtendedDefaultContext.quantize(Decimal('2.17'), Decimal('0.001'))
Decimal("2.170")
- >>> DefaultContext.quantize(Decimal('2.17'), Decimal('0.01'))
+ >>> ExtendedDefaultContext.quantize(Decimal('2.17'), Decimal('0.01'))
Decimal("2.17")
- >>> DefaultContext.quantize(Decimal('2.17'), Decimal('0.1'))
+ >>> ExtendedDefaultContext.quantize(Decimal('2.17'), Decimal('0.1'))
Decimal("2.2")
- >>> DefaultContext.quantize(Decimal('2.17'), Decimal('1e+0'))
+ >>> ExtendedDefaultContext.quantize(Decimal('2.17'), Decimal('1e+0'))
Decimal("2")
- >>> DefaultContext.quantize(Decimal('2.17'), Decimal('1e+1'))
+ >>> ExtendedDefaultContext.quantize(Decimal('2.17'), Decimal('1e+1'))
Decimal("0E+1")
- >>> DefaultContext.quantize(Decimal('-Inf'), Decimal('Infinity'))
+ >>> ExtendedDefaultContext.quantize(Decimal('-Inf'), Decimal('Infinity'))
Decimal("-Infinity")
- >>> DefaultContext.quantize(Decimal('2'), Decimal('Infinity'))
+ >>> ExtendedDefaultContext.quantize(Decimal('2'), Decimal('Infinity'))
Decimal("NaN")
- >>> DefaultContext.quantize(Decimal('-0.1'), Decimal('1'))
+ >>> ExtendedDefaultContext.quantize(Decimal('-0.1'), Decimal('1'))
Decimal("-0")
- >>> DefaultContext.quantize(Decimal('-0'), Decimal('1e+5'))
+ >>> ExtendedDefaultContext.quantize(Decimal('-0'), Decimal('1e+5'))
Decimal("-0E+5")
- >>> DefaultContext.quantize(Decimal('+35236450.6'), Decimal('1e-2'))
+ >>> ExtendedDefaultContext.quantize(Decimal('+35236450.6'), Decimal('1e-2'))
Decimal("NaN")
- >>> DefaultContext.quantize(Decimal('-35236450.6'), Decimal('1e-2'))
+ >>> ExtendedDefaultContext.quantize(Decimal('-35236450.6'), Decimal('1e-2'))
Decimal("NaN")
- >>> DefaultContext.quantize(Decimal('217'), Decimal('1e-1'))
+ >>> ExtendedDefaultContext.quantize(Decimal('217'), Decimal('1e-1'))
Decimal("217.0")
- >>> DefaultContext.quantize(Decimal('217'), Decimal('1e-0'))
+ >>> ExtendedDefaultContext.quantize(Decimal('217'), Decimal('1e-0'))
Decimal("217")
- >>> DefaultContext.quantize(Decimal('217'), Decimal('1e+1'))
+ >>> ExtendedDefaultContext.quantize(Decimal('217'), Decimal('1e+1'))
Decimal("2.2E+2")
- >>> DefaultContext.quantize(Decimal('217'), Decimal('1e+2'))
+ >>> ExtendedDefaultContext.quantize(Decimal('217'), Decimal('1e+2'))
Decimal("2E+2")
"""
return a.quantize(b, context=self)
@@ -2577,17 +2576,17 @@
(that is, if integer division on the same two operands would fail, the
remainder cannot be calculated).
- >>> DefaultContext.remainder(Decimal('2.1'), Decimal('3'))
+ >>> ExtendedDefaultContext.remainder(Decimal('2.1'), Decimal('3'))
Decimal("2.1")
- >>> DefaultContext.remainder(Decimal('10'), Decimal('3'))
+ >>> ExtendedDefaultContext.remainder(Decimal('10'), Decimal('3'))
Decimal("1")
- >>> DefaultContext.remainder(Decimal('-10'), Decimal('3'))
+ >>> ExtendedDefaultContext.remainder(Decimal('-10'), Decimal('3'))
Decimal("-1")
- >>> DefaultContext.remainder(Decimal('10.2'), Decimal('1'))
+ >>> ExtendedDefaultContext.remainder(Decimal('10.2'), Decimal('1'))
Decimal("0.2")
- >>> DefaultContext.remainder(Decimal('10'), Decimal('0.3'))
+ >>> ExtendedDefaultContext.remainder(Decimal('10'), Decimal('0.3'))
Decimal("0.1")
- >>> DefaultContext.remainder(Decimal('3.6'), Decimal('1.3'))
+ >>> ExtendedDefaultContext.remainder(Decimal('3.6'), Decimal('1.3'))
Decimal("1.0")
"""
return a.__mod__(b, context=self)
@@ -2602,19 +2601,19 @@
(that is, if integer division on the same two operands would fail, the
remainder cannot be calculated).
- >>> DefaultContext.remainder_near(Decimal('2.1'), Decimal('3'))
+ >>> ExtendedDefaultContext.remainder_near(Decimal('2.1'), Decimal('3'))
Decimal("-0.9")
- >>> DefaultContext.remainder_near(Decimal('10'), Decimal('6'))
+ >>> ExtendedDefaultContext.remainder_near(Decimal('10'), Decimal('6'))
Decimal("-2")
- >>> DefaultContext.remainder_near(Decimal('10'), Decimal('3'))
+ >>> ExtendedDefaultContext.remainder_near(Decimal('10'), Decimal('3'))
Decimal("1")
- >>> DefaultContext.remainder_near(Decimal('-10'), Decimal('3'))
+ >>> ExtendedDefaultContext.remainder_near(Decimal('-10'), Decimal('3'))
Decimal("-1")
- >>> DefaultContext.remainder_near(Decimal('10.2'), Decimal('1'))
+ >>> ExtendedDefaultContext.remainder_near(Decimal('10.2'), Decimal('1'))
Decimal("0.2")
- >>> DefaultContext.remainder_near(Decimal('10'), Decimal('0.3'))
+ >>> ExtendedDefaultContext.remainder_near(Decimal('10'), Decimal('0.3'))
Decimal("0.1")
- >>> DefaultContext.remainder_near(Decimal('3.6'), Decimal('1.3'))
+ >>> ExtendedDefaultContext.remainder_near(Decimal('3.6'), Decimal('1.3'))
Decimal("-0.3")
"""
return a.remainder_near(b, context=self)
@@ -2625,13 +2624,13 @@
The result is never affected by either the sign or the coefficient of
either operand.
- >>> DefaultContext.same_quantum(Decimal('2.17'), Decimal('0.001'))
+ >>> ExtendedDefaultContext.same_quantum(Decimal('2.17'), Decimal('0.001'))
False
- >>> DefaultContext.same_quantum(Decimal('2.17'), Decimal('0.01'))
+ >>> ExtendedDefaultContext.same_quantum(Decimal('2.17'), Decimal('0.01'))
True
- >>> DefaultContext.same_quantum(Decimal('2.17'), Decimal('1'))
+ >>> ExtendedDefaultContext.same_quantum(Decimal('2.17'), Decimal('1'))
False
- >>> DefaultContext.same_quantum(Decimal('Inf'), Decimal('-Inf'))
+ >>> ExtendedDefaultContext.same_quantum(Decimal('Inf'), Decimal('-Inf'))
True
"""
return a.same_quantum(b)
@@ -2642,35 +2641,37 @@
If the result must be inexact, it is rounded using the round-half-even
algorithm.
- >>> DefaultContext.sqrt(Decimal('0'))
+ >>> ExtendedDefaultContext.sqrt(Decimal('0'))
Decimal("0")
- >>> DefaultContext.sqrt(Decimal('-0'))
+ >>> ExtendedDefaultContext.sqrt(Decimal('-0'))
Decimal("-0")
- >>> DefaultContext.sqrt(Decimal('0.39'))
+ >>> ExtendedDefaultContext.sqrt(Decimal('0.39'))
Decimal("0.624499800")
- >>> DefaultContext.sqrt(Decimal('100'))
+ >>> ExtendedDefaultContext.sqrt(Decimal('100'))
Decimal("10")
- >>> DefaultContext.sqrt(Decimal('1'))
+ >>> ExtendedDefaultContext.sqrt(Decimal('1'))
Decimal("1")
- >>> DefaultContext.sqrt(Decimal('1.0'))
+ >>> ExtendedDefaultContext.sqrt(Decimal('1.0'))
Decimal("1.0")
- >>> DefaultContext.sqrt(Decimal('1.00'))
+ >>> ExtendedDefaultContext.sqrt(Decimal('1.00'))
Decimal("1.0")
- >>> DefaultContext.sqrt(Decimal('7'))
+ >>> ExtendedDefaultContext.sqrt(Decimal('7'))
Decimal("2.64575131")
- >>> DefaultContext.sqrt(Decimal('10'))
+ >>> ExtendedDefaultContext.sqrt(Decimal('10'))
Decimal("3.16227766")
+ >>> ExtendedDefaultContext.prec
+ 9
"""
return a.sqrt(context=self)
def subtract(self, a, b):
"""Return the sum of the two operands.
- >>> DefaultContext.subtract(Decimal('1.3'), Decimal('1.07'))
+ >>> ExtendedDefaultContext.subtract(Decimal('1.3'), Decimal('1.07'))
Decimal("0.23")
- >>> DefaultContext.subtract(Decimal('1.3'), Decimal('1.30'))
+ >>> ExtendedDefaultContext.subtract(Decimal('1.3'), Decimal('1.30'))
Decimal("0.00")
- >>> DefaultContext.subtract(Decimal('1.3'), Decimal('2.07'))
+ >>> ExtendedDefaultContext.subtract(Decimal('1.3'), Decimal('2.07'))
Decimal("-0.77")
"""
return a.__sub__(b, context=self)
@@ -2698,21 +2699,21 @@
of the operand as the precision setting, except that no flags will
be set. The rounding mode is taken from the context.
- >>> DefaultContext.to_integral(Decimal('2.1'))
+ >>> ExtendedDefaultContext.to_integral(Decimal('2.1'))
Decimal("2")
- >>> DefaultContext.to_integral(Decimal('100'))
+ >>> ExtendedDefaultContext.to_integral(Decimal('100'))
Decimal("100")
- >>> DefaultContext.to_integral(Decimal('100.0'))
+ >>> ExtendedDefaultContext.to_integral(Decimal('100.0'))
Decimal("100")
- >>> DefaultContext.to_integral(Decimal('101.5'))
+ >>> ExtendedDefaultContext.to_integral(Decimal('101.5'))
Decimal("102")
- >>> DefaultContext.to_integral(Decimal('-101.5'))
+ >>> ExtendedDefaultContext.to_integral(Decimal('-101.5'))
Decimal("-102")
- >>> DefaultContext.to_integral(Decimal('10E+5'))
+ >>> ExtendedDefaultContext.to_integral(Decimal('10E+5'))
Decimal("1.0E+6")
- >>> DefaultContext.to_integral(Decimal('7.89E+77'))
+ >>> ExtendedDefaultContext.to_integral(Decimal('7.89E+77'))
Decimal("7.89E+77")
- >>> DefaultContext.to_integral(Decimal('-Inf'))
+ >>> ExtendedDefaultContext.to_integral(Decimal('-Inf'))
Decimal("-Infinity")
"""
return a.to_integral(context=self)
@@ -2962,7 +2963,7 @@
# Is mutable, so than new contexts can have different default values
DefaultContext = Context(
- prec=SINGLE_PRECISION, rounding=ROUND_HALF_EVEN,
+ prec=28, rounding=ROUND_HALF_EVEN,
trap_enablers=dict.fromkeys(Signals, 0),
flags=None,
_rounding_decision=ALWAYS_ROUND,
@@ -2981,7 +2982,7 @@
)
ExtendedDefaultContext = Context(
- prec=SINGLE_PRECISION, rounding=ROUND_HALF_EVEN,
+ prec=9, rounding=ROUND_HALF_EVEN,
trap_enablers=dict.fromkeys(Signals, 0),
flags=None,
_rounding_decision=ALWAYS_ROUND,
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index 6da658f..7bfb13c 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -34,6 +34,13 @@
from test.test_support import TestSkipped, run_unittest, run_doctest, is_resource_enabled
import threading
+# Tests are built around these assumed context defaults
+DefaultContext.prec=9
+DefaultContext.rounding=ROUND_HALF_EVEN
+DefaultContext.trap_enablers=dict.fromkeys(Signals, 0)
+setcontext(DefaultContext)
+
+
TESTDATADIR = 'decimaltestdata'
if __name__ == '__main__':
file = sys.argv[0]