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from __future__ import division, absolute_import, print_function, unicode_literals
from awlsim_tstlib import *
initTest(__file__)
from awlsim.common.datatypehelpers import * #+cimport
class Test_DataTypeHelpers(TestCase):
def test_swapEndianWord(self):
self.assertEqual(swapEndianWord(0x1234), 0x3412)
self.assertEqual(swapEndianWord(swapEndianWord(0x1234)), 0x1234)
def test_swapEndianDWord(self):
self.assertEqual(swapEndianDWord(0x12345678), 0x78563412)
self.assertEqual(swapEndianDWord(swapEndianDWord(0x12345678)), 0x12345678)
def test_floatConst(self):
self.assertEqual(pyFloatToDWord(floatConst.minNormPosFloat32), floatConst.minNormPosFloat32DWord)
self.assertEqual(pyFloatToDWord(floatConst.minNormNegFloat32), floatConst.minNormNegFloat32DWord)
self.assertEqual(pyFloatToDWord(floatConst.maxNormNegFloat32), floatConst.maxNormNegFloat32DWord)
self.assertEqual(pyFloatToDWord(floatConst.maxNormPosFloat32), floatConst.maxNormPosFloat32DWord)
self.assertEqual(pyFloatToDWord(floatConst.posInfFloat), floatConst.posInfDWord)
self.assertEqual(pyFloatToDWord(floatConst.negInfFloat), floatConst.negInfDWord)
self.assertEqual(pyFloatToDWord(floatConst.nNaNFloat), floatConst.nNaNDWord)
def test_getMSB(self):
self.assertEqual(getMSB(0), 0)
self.assertEqual(getMSB(0xFFFFFFFF), 0x80000000)
self.assertEqual(getMSB(0x57C31), 0x40000)
self.assertEqual(getMSB(0xA6B204), 0x800000)
mask0 = 0xAAAAAAAA
mask1 = 0x55555555
for i in range(32):
self.assertEqual(getMSB(1 << i), 1 << i)
self.assertEqual(getMSB(mask0), 1 << (31 - i))
self.assertEqual(getMSB(mask1), (1 << (31 - i)) >> 1)
mask0 >>= 1
mask1 >>= 1
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