mirror of
https://github.com/python/cpython.git
synced 2024-11-28 08:20:55 +01:00
96 lines
2.8 KiB
Python
96 lines
2.8 KiB
Python
import sys
|
|
import test_support
|
|
|
|
def powtest(type):
|
|
if (type!=float):
|
|
print " Testing 2-argument pow() function..."
|
|
for i in range(-1000, 1000):
|
|
if (pow(type(i),0)!=1):
|
|
raise ValueError, 'pow('+str(i)+',0) != 1'
|
|
if (pow(type(i),1)!=type(i)):
|
|
raise ValueError, 'pow('+str(i)+',1) != '+str(i)
|
|
if (pow(type(0),1)!=type(0)):
|
|
raise ValueError, 'pow(0,'+str(i)+') != 0'
|
|
if (pow(type(1),1)!=type(1)):
|
|
raise ValueError, 'pow(1,'+str(i)+') != 1'
|
|
|
|
for i in range(-100, 100):
|
|
if (pow(type(i),3)!=i*i*i):
|
|
raise ValueError, 'pow('+str(i)+',3) != '+str(i*i*i)
|
|
|
|
pow2=1
|
|
for i in range(0,31):
|
|
if (pow(2,i)!=pow2):
|
|
raise ValueError, 'pow(2,'+str(i)+') != '+str(pow2)
|
|
if (i!=30): pow2=pow2*2
|
|
|
|
print " Testing 3-argument pow() function..."
|
|
il, ih = -20, 20
|
|
jl, jh = -5, 5
|
|
kl, kh = -10, 10
|
|
compare = cmp
|
|
if (type==float):
|
|
il=1
|
|
compare = test_support.fcmp
|
|
elif (type==int):
|
|
jl=0
|
|
elif (type==long):
|
|
jl,jh = 0, 15
|
|
for i in range(il, ih+1):
|
|
for j in range(jl,jh+1):
|
|
for k in range(kl, kh+1):
|
|
if (k!=0):
|
|
if compare(pow(type(i),j,k), pow(type(i),j)% type(k)):
|
|
raise ValueError, "pow(" +str(i)+ "," +str(j)+ \
|
|
"," +str(k)+ ") != pow(" +str(i)+ "," + \
|
|
str(j)+ ") % " +str(k)
|
|
|
|
|
|
print 'Testing integer mode...'
|
|
powtest(int)
|
|
print 'Testing long integer mode...'
|
|
powtest(long)
|
|
print 'Testing floating point mode...'
|
|
powtest(float)
|
|
|
|
# Other tests-- not very systematic
|
|
|
|
print 'The number in both columns should match.'
|
|
print `pow(3,3) % 8`, `pow(3,3,8)`
|
|
print `pow(3,3) % -8`, `pow(3,3,-8)`
|
|
print `pow(3,2) % -2`, `pow(3,2,-2)`
|
|
print `pow(-3,3) % 8`, `pow(-3,3,8)`
|
|
print `pow(-3,3) % -8`, `pow(-3,3,-8)`
|
|
print `pow(5,2) % -8`, `pow(5,2,-8)`
|
|
print
|
|
|
|
print `pow(3L,3L) % 8`, `pow(3L,3L,8)`
|
|
print `pow(3L,3L) % -8`, `pow(3L,3L,-8)`
|
|
print `pow(3L,2) % -2`, `pow(3L,2,-2)`
|
|
print `pow(-3L,3L) % 8`, `pow(-3L,3L,8)`
|
|
print `pow(-3L,3L) % -8`, `pow(-3L,3L,-8)`
|
|
print `pow(5L,2) % -8`, `pow(5L,2,-8)`
|
|
print
|
|
|
|
print pow(3.0,3.0) % 8, pow(3.0,3.0,8)
|
|
print pow(3.0,3.0) % -8, pow(3.0,3.0,-8)
|
|
print pow(3.0,2) % -2, pow(3.0,2,-2)
|
|
print pow(5.0,2) % -8, pow(5.0,2,-8)
|
|
print
|
|
|
|
for i in range(-10, 11):
|
|
for j in range(0, 6):
|
|
for k in range(-7, 11):
|
|
if (j>=0 and k!=0):
|
|
o=pow(i,j) % k
|
|
n=pow(i,j,k)
|
|
if (o!=n): print 'Integer mismatch:', i,j,k
|
|
if (j>=0 and k<>0):
|
|
o=pow(long(i),j) % k
|
|
n=pow(long(i),j,k)
|
|
if (o!=n): print 'Long mismatch:', i,j,k
|
|
if (i>=0 and k<>0):
|
|
o=pow(float(i),j) % k
|
|
n=pow(float(i),j,k)
|
|
if (o!=n): print 'Float mismatch:', i,j,k
|