source.functions module

source.functions.evaluate(a)

Force full evaluation of a tensor expression

source.functions.lincomb(coefficients, tensors, evaluate=False)

Form a linear combination from a list of tensors.

If coefficients is a 1D array, just form a single linear combination, else return a list of vectors representing the linear combination by reading the coefficients row-by-row.

Parameters:

• coefficients (list) – Coefficients for the linear combination

• tensors (list) – Tensors for the linear combination

• evaluate (bool) – Should the linear combination be evaluated (True) or should just a lazy expression be formed (False). Notice that lincomb(…, evaluate=True) is identical to lincomb(…, evaluate=False).evaluate(), but the former is generally faster.