- changed function::diff() to be more tolerant by checking first if the

[ginac.git] / ginac / inifcns.h

diff --git a/ginac/inifcns.h b/ginac/inifcns.h
index f7622dd43b9500e3099387c136db4bc168b38616..725c1ee72e0eb817bcc0b3834e084110448030c3 100644 (file)
--- a/ginac/inifcns.h
+++ b/ginac/inifcns.h
@@ -81,14 +81,22 @@ DECLARE_FUNCTION_1P(Li3)
 
 /** Riemann's Zeta-function. */
 DECLARE_FUNCTION_1P(zeta)
-DECLARE_FUNCTION_2P(zeta)
-    
+//DECLARE_FUNCTION_2P(zeta)
+
 /** Gamma-function. */
 DECLARE_FUNCTION_1P(gamma)
 
 /** Psi-function (aka polygamma-function). */
-DECLARE_FUNCTION_1P(psi)
-DECLARE_FUNCTION_2P(psi)
+extern unsigned function_index_psi1;
+inline function psi(ex const & p1) {
+    return function(function_index_psi1, p1);
+}
+extern unsigned function_index_psi2;
+inline function psi(ex const & p1, ex const & p2) {
+    return function(function_index_psi2, p1, p2);
+}
+//DECLARE_FUNCTION_1P(psi)
+//DECLARE_FUNCTION_2P(psi)
     
 /** Factorial function. */
 DECLARE_FUNCTION_1P(factorial)