C-style arbitrary precision calculator w/custom functions (version 2.12.5.0)

For more information while running calc, type help followed by one of the following topics: topic description ----- ----------- intro introduction to calc overview overview of calc help this file assoc using associations builtin builtin functions command top level commands config configuration parameters custom information about the custom builtin interface define how to define functions environment how environment variables effect calc errorcodes calc generated error codes expression expression sequences file using files history command history interrupt how interrupts are handled list using lists mat using matrices obj user defined data types operator math, relational, logic and variable access operators statement flow control and declaration statements types builtin data types unexpected unexpected syntax/usage surprises for C programmers usage how to invoke the calc command variable variables and variable declarations bindings input & history character bindings custom_cal information about custom calc resource files libcalc using the arbitrary precision routines in a C program new_custom information about how to add new custom functions resource standard calc resource files script using calc shell scripts cscript info on the calc shell scripts supplied with calc archive where to get the latest versions of calc bugs known bugs and mis-features changes recent changes to calc contrib how to contribute scripts, code or custom functions todo list of priority action items for calc wishlist wish list of future enhancements of calc credit who wrote calc and who helped copyright calc copyright and the GNU LGPL copying details on the Calc GNU Lesser General Public License copying-lgpl calc GNU Lesser General Public License text full all of the above (in the above order) For example: help usage will print the calc command usage information. One can obtain calc help without invoking any startup code by running calc as follows: calc -q help topic where 'topic' is one of the topics listed above. You can also ask for help on a particular builtin function name. For example: help asinh help round See: help builtin for a list of builtin functions. Some calc operators have their own help pages: help = help -> help * help . help % help // help # If the -m mode disallows opening files for reading or execution of programs, then the help facility will be disabled. See: help usage for details of the -m mode. The help command is able to display installed help files for custom builtin functions. However, if the custom name is the same as a standard help file, the standard help file will be displayed instead. The custom help builtin should be used to directly access the custom help file. For example, the custom help builtin has the same name as the standard help file. That is: help help will print this file only. However the custom help builtin will print only the custom builtin help file: custom("help", "help"); will by-pass a standard help file and look for the custom version directly. As a hack, the following: help custhelp/anything as the same effect as: custom("help", "anything");