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Use fuzzy comparison from test_support to compare outcome of

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pow(x,y,z) to pow(x,y)%z.
This commit is contained in:
Guido van Rossum 1997-11-24 22:24:22 +00:00
parent 275feea40f
commit e2d4dd194b
1 changed files with 4 additions and 1 deletions
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5
Lib/test/test_pow.py
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@ -1,4 +1,5 @@
import sys import sys
import test_support
def powtest(type): def powtest(type):
if (type!=float): if (type!=float):
@ -27,8 +28,10 @@ def powtest(type):
il, ih = -20, 20 il, ih = -20, 20
jl, jh = -5, 5 jl, jh = -5, 5
kl, kh = -10, 10 kl, kh = -10, 10
compare = cmp
if (type==float): if (type==float):
il=1 il=1
compare = test_support.fcmp
elif (type==int): elif (type==int):
jl=0 jl=0
elif (type==long): elif (type==long):
@ -37,7 +40,7 @@ def powtest(type):
for j in range(jl,jh+1): for j in range(jl,jh+1):
for k in range(kl, kh+1): for k in range(kl, kh+1):
if (k!=0): if (k!=0):
if (pow(type(i),j,k)!=pow(type(i),j)% type(k) ): if compare(pow(type(i),j,k), pow(type(i),j)% type(k)):
raise ValueError, "pow(" +str(i)+ "," +str(j)+ \ raise ValueError, "pow(" +str(i)+ "," +str(j)+ \
"," +str(k)+ ") != pow(" +str(i)+ "," + \ "," +str(k)+ ") != pow(" +str(i)+ "," + \
str(j)+ ") % " +str(k) str(j)+ ") % " +str(k)