diff options
Diffstat (limited to 'numpy/polynomial/tests/test_chebyshev.py')
| -rw-r--r-- | numpy/polynomial/tests/test_chebyshev.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/numpy/polynomial/tests/test_chebyshev.py b/numpy/polynomial/tests/test_chebyshev.py index 439dfa08d..6169b4120 100644 --- a/numpy/polynomial/tests/test_chebyshev.py +++ b/numpy/polynomial/tests/test_chebyshev.py @@ -3,6 +3,8 @@ """ from __future__ import division, absolute_import, print_function +from functools import reduce + import numpy as np import numpy.polynomial.chebyshev as cheb from numpy.polynomial.polynomial import polyval @@ -111,6 +113,15 @@ class TestArithmetic(object): res = cheb.chebadd(cheb.chebmul(quo, ci), rem) assert_equal(trim(res), trim(tgt), err_msg=msg) + def test_chebpow(self): + for i in range(5): + for j in range(5): + msg = "At i=%d, j=%d" % (i, j) + c = np.arange(i + 1) + tgt = reduce(cheb.chebmul, [c]*j) if j else np.array([1]) + res = cheb.chebpow(c, j) + assert_equal(trim(res), trim(tgt), err_msg=msg) + class TestEvaluation(object): # coefficients of 1 + 2*x + 3*x**2 |