def test4(self):
bv = BitVector(32, 0x12345678)
for bitlen in xrange(1,32):
mask = ( 1 << bitlen ) - 1
for start in xrange(0,(32-bitlen+1)):
end = start + bitlen - 1
exp_d = ( 0x12345678 >> start ) & mask
bv_d = bv.get_bin_data( self_max=end, self_min=start)
# print "bv.get_bin_data(%d,%d) == 0x%x. Exp=0x%x" % (end, start, bv_d, exp_d)
self.assert_(bv_d == exp_d," exp:0x%x\nsaw:0x%x [%d,%d]" % (exp_d, bv_d, end,start))
def test5(self):
for numbits in xrange(1,256):
bv = BitVector(256, 1<<(numbits-1) )
other = BitVector(numbits, 1<<(numbits-1))
self.assert_( bv.is_same_when_extended( other ))
other = BitVector(numbits, 1<<(numbits))
self.assert_( bv.is_same_when_extended( other ) == False )
other = BitVector(1, 1)
self.assert_(bv.is_same_when_extended( other, self_max = numbits-1, self_min = numbits-1 ))
if numbits > 1: self.assert_( bv.is_same_when_extended( other, self_max = numbits-1, self_min = 0 ) == False)
def test3(self):
bv = BitVector(32, 0x12345678)
for i in xrange(31,0,-1):
bv.set_num_bits(i)
mask = ( 1 << i ) - 1
self.assert_(bv.num_bits == i)
self.assert_(bv.bin_data == (0x12345678 & mask ))
self.assert_(bv.is_x == 0)
bv = BitVector(32)
for i in xrange(31,0,-1):
bv.set_num_bits(i)
mask = ( 1 << i ) - 1
self.assert_(bv.num_bits == i)
self.assert_(bv.is_x == mask)
def test6(self):
bv = BitVector(256, val_int=0)
for numbits in xrange(256,0,-1):
other = BitVector(numbits, 1<<(numbits-1))
bv.update_from(other)
self.assert_( bv.is_same_when_extended( other ))
other1 = BitVector(8,val_int=0xff)
for start in xrange(0,256-8):
bv = BitVector( 256, val_int=0 )
bv.update_from(other1, self_max = start+7, self_min = start)
expd = 0xff << start
bvd = bv.get_bin_data()
self.assert_(bvd == expd, "\nexpd=0x%x\nbv =0x%x" % (expd, bvd))
c = 0x12345678abcd112212345678abcd1122
c2 = 0x556611ff
other2 = BitVector(32,c2)
for start in xrange(0,256-32):
bv = BitVector( 256, c )
bv.update_from(other2, self_max = start+31, self_min = start)
expd = c & ~(0xffffffff << start) | ( c2 << start)
bvd = bv.get_bin_data()
self.assert_(bvd == expd, "\nstart=%d\nexpd=0x%x\nbv =0x%x" % (start, expd, bvd))
