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New restriction on pow(x, y, z): If z is not None, x and y must be of

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integer types, and y must be >= 0.  See discussion at
http://sf.net/tracker/index.php?func=detail&aid=457066&group_id=5470&atid=105470
This commit is contained in:
Tim Peters 2001-09-03 08:35:41 +00:00
parent 5d2b77cf31
commit 32f453eaa4
9 changed files with 79 additions and 49 deletions
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27
Lib/test/test_b2.py
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@ -82,17 +82,28 @@ if fcmp(pow(2.,10), 1024.): raise TestFailed, 'pow(2.,10)'
if fcmp(pow(2.,20), 1024.*1024.): raise TestFailed, 'pow(2.,20)'
if fcmp(pow(2.,30), 1024.*1024.*1024.): raise TestFailed, 'pow(2.,30)'
#
# XXX These don't work -- negative float to the float power...
#if fcmp(pow(-2.,0), 1.): raise TestFailed, 'pow(-2.,0)'
#if fcmp(pow(-2.,1), -2.): raise TestFailed, 'pow(-2.,1)'
#if fcmp(pow(-2.,2), 4.): raise TestFailed, 'pow(-2.,2)'
#if fcmp(pow(-2.,3), -8.): raise TestFailed, 'pow(-2.,3)'
#
if fcmp(pow(-2.,0), 1.): raise TestFailed, 'pow(-2.,0)'
if fcmp(pow(-2.,1), -2.): raise TestFailed, 'pow(-2.,1)'
if fcmp(pow(-2.,2), 4.): raise TestFailed, 'pow(-2.,2)'
if fcmp(pow(-2.,3), -8.): raise TestFailed, 'pow(-2.,3)'
from types import FloatType
for x in 2, 2L, 2.0:
for y in 10, 10L, 10.0:
for z in 1000, 1000L, 1000.0:
if fcmp(pow(x, y, z), 24.0):
raise TestFailed, 'pow(%s, %s, %s)' % (x, y, z)
if isinstance(x, FloatType) or \
isinstance(y, FloatType) or \
isinstance(z, FloatType):
try:
pow(x, y, z)
except TypeError:
pass
else:
raise TestFailed("3-arg float pow() should have "
"raised TypeError %r" % (x, y, z))
else:
if fcmp(pow(x, y, z), 24.0):
raise TestFailed, 'pow(%s, %s, %s)' % (x, y, z)
print 'range'
if range(3) != [0, 1, 2]: raise TestFailed, 'range(3)'