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<?php if ( ! defined( 'ABSPATH' ) ) { exit; } if ( ! class_exists( 'WC_Eval_Math', false ) ) { /* class WC_Eval_Math */ /* function WC_Eval_Math::evaluate() – Evaluate maths string. */ /* function WC_Eval_Math::nfx() – Convert infix to postfix notation. */ /* function WC_Eval_Math::pfx() – Evaluate postfix notation. */ /* function WC_Eval_Math::trigger() – Trigger an error, but nicely, if need be. */ /* function WC_Eval_Math::debugPrintCallingFunction() – Prints the file name, function name, and line number which called your function (not this function, then one that called it to begin with) */ /* class WC_Eval_Math_Stack */ /* function WC_Eval_Math_Stack::push() – Push value into stack. */ /* function WC_Eval_Math_Stack::pop() – Pop value from stack. */ /* function WC_Eval_Math_Stack::last() – Get last value from stack. */ }