X-Git-Url: https://ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=ginac%2Finifcns.h;h=73fff2167cae0314acf09b32f8abbc20d042c9ed;hb=b9cd4b49ffbfbf3e1c36a2b594ec3148a5baca64;hp=42f3838919635a98b95f989e98a2d823d68cfe1c;hpb=9eab44408b9213d8909b7a9e525f404ad06064dd;p=ginac.git

diff --git a/ginac/inifcns.h b/ginac/inifcns.h
index 42f38389..73fff216 100644
--- a/ginac/inifcns.h
+++ b/ginac/inifcns.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's initially known functions. */
 
 /*
- *  GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -23,11 +23,20 @@
 #ifndef __GINAC_INIFCNS_H__
 #define __GINAC_INIFCNS_H__
 
-#include <ginac/function.h>
-#include <ginac/ex.h>
+#include "function.h"
+#include "ex.h"
 
 namespace GiNaC {
 
+/** Absolute value. */
+DECLARE_FUNCTION_1P(abs)
+	
+/** Complex sign. */
+DECLARE_FUNCTION_1P(csgn)
+
+/** Eta function: log(a*b) == log(a) + log(b) + eta(a, b). */
+DECLARE_FUNCTION_2P(eta)
+
 /** Sine. */
 DECLARE_FUNCTION_1P(sin)
 
@@ -79,9 +88,37 @@ DECLARE_FUNCTION_1P(Li2)
 /** Trilogarithm. */
 DECLARE_FUNCTION_1P(Li3)
 
-/** Gamma function. */
-DECLARE_FUNCTION_1P(gamma)
+// overloading at work: we cannot use the macros here
+/** Riemann's Zeta-function. */
+extern const unsigned function_index_zeta1;
+inline function zeta(const ex & p1) {
+	return function(function_index_zeta1, p1);
+}
+/** Derivatives of Riemann's Zeta-function. */
+extern const unsigned function_index_zeta2;
+inline function zeta(const ex & p1, const ex & p2) {
+	return function(function_index_zeta2, p1, p2);
+}
+
+/** Gamma-function. */
+DECLARE_FUNCTION_1P(lgamma)
+DECLARE_FUNCTION_1P(tgamma)
 
+/** Beta-function. */
+DECLARE_FUNCTION_2P(beta)
+
+// overloading at work: we cannot use the macros here
+/** Psi-function (aka digamma-function). */
+extern const unsigned function_index_psi1;
+inline function psi(const ex & p1) {
+	return function(function_index_psi1, p1);
+}
+/** Derivatives of Psi-function (aka polygamma-functions). */
+extern const unsigned function_index_psi2;
+inline function psi(const ex & p1, const ex & p2) {
+	return function(function_index_psi2, p1, p2);
+}
+	
 /** Factorial function. */
 DECLARE_FUNCTION_1P(factorial)
 
@@ -91,11 +128,14 @@ DECLARE_FUNCTION_2P(binomial)
 /** Order term function (for truncated power series). */
 DECLARE_FUNCTION_1P(Order)
 
-ex lsolve(ex const &eqns, ex const &symbols);
+/** Inert partial differentiation operator. */
+DECLARE_FUNCTION_2P(Derivative)
+
+ex lsolve(const ex &eqns, const ex &symbols);
 
-ex ncpower(ex const &basis, unsigned exponent);
+ex ncpower(const ex &basis, unsigned exponent);
 
-inline bool is_order_function(ex const & e)
+inline bool is_order_function(const ex & e)
 {
 	return is_ex_the_function(e, Order);
 }