/usr/lib/python2.7/dist-packages/csb/test/cases/statmech/ensembles.py is in python-csb 1.2.3+dfsg-3.
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import csb.numeric
import csb.test as test
from csb.statmech.ensembles import BoltzmannEnsemble, TsallisEnsemble, CompositeEnsemble
@test.functional
class TestEnergy(test.Case):
def testBoltzmann(self):
e = numpy.linspace(-50, 1000, 1000)
be = BoltzmannEnsemble(beta=1,)
te = be.energy(e)
for i in range(len(e)):
self.assertEqual(e[i], te[i])
be = BoltzmannEnsemble(beta=0.001,)
te = be.energy(e)
for i in range(len(e)):
self.assertEqual(e[i] * 0.001, te[i])
def testTsallis(self):
e = numpy.linspace(-50, 1000, 1000)
tsallis = TsallisEnsemble(q=1.,)
te = tsallis.energy(e)
for i in range(len(e)):
self.assertEqual(e[i], te[i])
tsallis = TsallisEnsemble(q=1.1, e_min= -50.)
te = tsallis.energy(e)
q = 1.1
ee = q / (q - 1.) * csb.numeric.log(1 + (q - 1) * (e + 50.)) - 50
for i in range(len(e)):
self.assertAlmostEqual(ee[i], te[i], delta=1e-5)
def testComposite(self):
e1 = numpy.linspace(-50, 1000, 1000)
e2 = numpy.linspace(-30, 3000, 1000)
q = 1.1
beta = 0.1
ee = q / (q - 1.) * csb.numeric.log(1 + (q - 1) * (e1 + 50.)) - 50
ee += e2 * beta
ce = CompositeEnsemble([TsallisEnsemble(q=q, e_min= -50.),
BoltzmannEnsemble(beta=beta,)])
cee = ce.energy([e1, e2])
for i in range(len(e1)):
self.assertAlmostEqual(ee[i], cee[i], delta=1e-5)
if __name__ == '__main__':
test.Console()
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