names = self.function.names()
if len(names) > 1:
raise Exception('Too many variables.')
self.var = names[0] if len(names) > 0 else 'x'
def __call__(self, x):
return self.function({self.var: x})
if __name__ == '__main__':
argparser = ArgumentParser(description=
'Estimates the definite integral of a single-variable function.')
argparser.add_argument('-a', '--lower', default=0.0, type=float,
help='Lower integration bound (default: 0.0).')
argparser.add_argument('-b', '--upper', default=1.0, type=float,
help='Upper integration bound (defualt: 1.0).')
argparser.add_argument('-p', '--precision', default=1e-4, type=float,
help='Estimation precision (default: 1e-4).')
argparser.add_argument('-f', '--fork', default=1, type=int,
help='Number of worker processes.')
argparser.add_argument('expression', help='Single-variable expression.')
args = argparser.parse_args()
try:
print mp_defined_integral(SingleVariableFunction(args.expression),
args.lower, args.upper, args.precision, args.fork)
except Exception, e:
print 'ERROR: ' + str(e)
def test_mp(self):
self.assertAlmostEqual(0.5, mp_defined_integral(ident, 0, 1, 0.001, 1), delta=0.001)
self.assertAlmostEqual(0.5, mp_defined_integral(ident, 0, 1, 0.000001, 4), delta=0.000001)
self.assertAlmostEqual(0.5, mp_defined_integral(ident, 0, 1, 0.000001, 16), delta=0.000001)