/** Absolute value. */
DECLARE_FUNCTION_1P(abs)
+
+/** Complex sign. */
+DECLARE_FUNCTION_1P(csgn)
/** Sine. */
DECLARE_FUNCTION_1P(sin)
}
/** Gamma-function. */
-DECLARE_FUNCTION_1P(gamma)
+DECLARE_FUNCTION_1P(lgamma)
+DECLARE_FUNCTION_1P(tgamma)
/** Beta-function. */
DECLARE_FUNCTION_2P(beta)
/** Order term function (for truncated power series). */
DECLARE_FUNCTION_1P(Order)
-/** Inert differentiation. */
-DECLARE_FUNCTION_2P(Diff)
-
/** Inert partial differentiation operator. */
DECLARE_FUNCTION_2P(Derivative)