--- loncom/xml/lonxml.pm	2001/05/26 17:27:28	1.79
+++ loncom/xml/lonxml.pm	2001/05/30 15:27:13	1.81
@@ -8,6 +8,7 @@
 # 3/29,5/4 Gerd Kortemeyer
 # 5/10 Scott Harrison
 # 5/26 Gerd Kortemeyer
+# 5/27 H. K. Ng
 
 package Apache::lonxml; 
 use vars 
@@ -16,6 +17,7 @@ use strict;
 use HTML::TokeParser;
 use Safe;
 use Safe::Hole;
+use Math::Cephes qw(:trigs :hypers :bessels erf erfc);
 use Opcode;
 
 sub register {
@@ -175,6 +177,27 @@ sub xmlparse {
  $safeeval->permit("sort");
  $safeeval->deny(":base_io");
  $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
+
+ $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
+ $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
+ $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
+ $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
+ $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
+ $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
+ $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
+ $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
+ $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
+ $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
+ $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
+ $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
+ $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
+ $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
+ $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
+ $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
+ $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
+ $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
+ $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
+
 #need to inspect this class of ops
 # $safeeval->deny(":base_orig");
  $safeinit .= ';$external::target='.$target.';';