The data type for variables in the hoc-language is always
double. Thus string variables are not fully supported in yoda.
The sprintf function (Table 5.1) allows to format
strings ``on the fly'' to be used in function calls. Sometimes,
however, it may be useful to store string values, e.g. in an array
for future reference in function calls (like histogram names). For
this purpose the builtin-functions pack_string and unpack_string are available:
Table 5.13:
List of Available String Functions
var = pack_string("string-constant");
Stores the string
constant and returns a pointer to it.
var = some_function(unpack_string(var));
Returns the string
in a function call, where a string argument is needed.
