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