40 lines
1.0 KiB
Python
40 lines
1.0 KiB
Python
# check cases converting float to int, relying only on single precision float
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print(int(14187745.))
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print(int(2.**100))
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print("%d" % 14187745.)
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print("%d" % 2.**100)
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testpass = True
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for i in range(0,128):
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bitcnt = len(bin(int(2.**i))) - 3;
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if i != bitcnt:
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print('fail: 2**%u was %u bits long' % (i, bitcnt));
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testpass = False
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print("power of 2 test: %s" % (testpass and 'passed' or 'failed'))
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# TODO why does 10**12 fail this test for single precision float?
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testpass = True
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for i in range(0,12):
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digcnt = len(str(int(10.**i))) - 1;
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if i != digcnt:
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print('fail: 10**%u was %u digits long' % (i, digcnt));
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testpass = False
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print("power of 10 test: %s" % (testpass and 'passed' or 'failed'))
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# test inf conversion
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try:
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int(float('inf'))
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except OverflowError:
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print("OverflowError")
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# test nan conversion
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try:
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int(float('nan'))
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except ValueError:
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print("ValueError")
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# test numbers < 1 (this used to fail; see issue #1044)
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import struct
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struct.pack('I', int(1/2))
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