Module sunscreen_fhe_program::traversal

Functions related to getting more information about a node in the execution graph. E.g. getting operands for operations.

Functions

get_left_right_operands

Gets the two input operands and returns a tuple of left, right. For some operations (i.e. subtraction), order matters. While it’s erroneous for a binary operations to have anything other than a single left and single right operand, having more operands will result in one being selected arbitrarily. Validating the FheProgram will reveal having the wrong number of operands.

get_unary_operand

Gets the single unary input operand for the given node. If the FheProgram is malformed and the node has more than one UnaryOperand, one will be selected arbitrarily. As such, one should validate the FheProgram before calling this method.