Add LaTeX pretty-print for function derivatives.

diff --git a/ginac/fderivative.cpp b/ginac/fderivative.cpp
index 494b1047768f7a55c4ccbb0919190bfc13dab545..30157c44d5a7d949d6a253c50a79218a18838fc2 100644 (file)
--- a/ginac/fderivative.cpp
+++ b/ginac/fderivative.cpp
@@ -31,6 +31,7 @@ namespace GiNaC {
 
 GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(fderivative, function,
   print_func<print_context>(&fderivative::do_print).
+  print_func<print_latex>(&fderivative::do_print_latex).
   print_func<print_csrc>(&fderivative::do_print_csrc).
   print_func<print_tree>(&fderivative::do_print_tree))
 
@@ -111,6 +112,23 @@ void fderivative::do_print(const print_context & c, unsigned level) const
        printseq(c, '(', ',', ')', exprseq::precedence(), function::precedence());
 }
 
+void fderivative::do_print_latex(const print_context & c, unsigned level) const
+{
+       int order=1;
+       c.s << "\\partial_{";
+       auto i = parameter_set.begin(), end = parameter_set.end();
+       --end;
+       while (i != end) {
+               ++order;
+               c.s << *i++ << ",";
+       }
+       c.s << *i << "}";
+       if (order>1)
+               c.s << "^{" << order << "}";
+       c.s << "(" << registered_functions()[serial].TeX_name << ")";
+       printseq(c, '(', ',', ')', exprseq::precedence(), function::precedence());
+}
+
 void fderivative::do_print_csrc(const print_csrc & c, unsigned level) const
 {
        c.s << "D_";

diff --git a/ginac/fderivative.h b/ginac/fderivative.h
index e856797dc9c137627826ee8f2344adaf9d11cd53..5ab41971b970ea3b9d065d0da3b83f535c315063 100644 (file)
--- a/ginac/fderivative.h
+++ b/ginac/fderivative.h
@@ -76,6 +76,7 @@ public:
        const paramset& derivatives() const;
 protected:
        void do_print(const print_context & c, unsigned level) const;
+       void do_print_latex(const print_context & c, unsigned level) const;
        void do_print_csrc(const print_csrc & c, unsigned level) const;
        void do_print_tree(const print_tree & c, unsigned level) const;