math::special(3tcl) 0.2 math "Tcl Math Library" Name math::special - Special mathematical functions Table Of Contents Table Of Contents Synopsis Description OVERVIEW PROCEDURES THE ORTHOGONAL POLYNOMIALS REMARKS ON THE IMPLEMENTATION The return code of the procedure is 0 (TCL_OK). return -code error editRS 2005-08-08: Using return -code error in place of plain error, you get a leaner error traceback which is possibly better to read:% proc 1 x {if {$x<=0} return -level 0 -code return has the same effect as return, as well as return -level 1 -code ok. (TCL_RETURN)3breakInstruct the next level up break out of the innermost nested loop http://colinmeldrum.com/tcl-error/tcl-last-error.html

When source evaluates the contents of a file as a script, an invocation of the return command will cause script evaluation to immediately cease, and the value result (or an empty more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed break (3) The return code of the procedure is 3 (TCL_BREAK). Tcl Library Source Code math::special - Tcl Math Library Not logged in Core Home Blog DocsDownloads Tickets Timeline Files Branches Wiki Login Bounty program for improvements to Tcl and certain Tcl

Tcl Proc Return Value

EXAMPLES First, a simple example of using return to return from a procedure, interrupting the procedure body. Much information about these functions can be found in: Abramowitz and Stegun: Handbook of Mathematical Functions (Dover, ISBN 486-61272-4) BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly HallKatkıda BulunanJohn R. See below for additional options.

The syntax for each of these commands is shown below. float u Argument for the function float k Parameter ::math::special::dn u k Compute the elliptic function dn for the argument "u" and parameter "k". When [lindex] is given only one argument, it interprets that as instruction to not perform any list indexing. Tcl Return Array In the releases in between, due to some limitations in the bytecode compiler/execution machinery it could not be "whatever":braces still needed to be balancedCommands like set get byte-compiled early, so a

Similarly, if a command expects a script, you'd better pass it a script.PYK 2013-12-10: However, if lindex is missing its second value, the first value can still be Tcl Return List interp alias {} Break {} return -level 0 -code break An example of using catch and return -options to re-raise a caught error: proc doSomething {} { set resource [allocate] catch If the -errorcode option is specified then code provides a value for the errorCode variable. https://www.tcl.tk/man/tcl/TclCmd/return.htm The procedure command behaves in its calling context as if it were the command return (with no arguments).

Example(s) If the one-line, cataloged program called test is executed as shown, it displays the command line. Tcl Stop Script The procedure command behaves in its calling context as if it were the command continue. Any exceptional return code (non-TCL_OK) returned by a command evaluation causes the flow on to the next command to be interrupted. error (1) Error return: the return code of the procedure is 1 (TCL_ERROR).

Tcl Return List

The procedure command behaves in its calling context as if it were the command error result. value Value must be an integer; it will be returned as the return code for the current procedure. When a procedure wants to signal that it has received invalid arguments Tcl Proc Return Value I know the command worked for them when they wrote the code, so the package must have compatibility issues with more recent versions of R. –EdSeab May 24 at 19:22 add Tcl Proc Return List Example A convenient way to work with PL/Tcl's errorCode information is to load it into an array, so that the field names become array subscripts.

This is the mechanism by which errors during script evaluation cause an interruption and unwinding of the call stack. navigate here The stack trace will also be stored in the global variable errorInfo. Procedure invocation provides special treatment when evaluation of the procedure body returns the return code TCL_RETURN. return -level 1 -code ok is the same as return. (TCL_OK)1errorAn error. Tcl Error Handling

The implementation of J1/2 does not suffer from this: this function can be expressed exactly in terms of elementary functions. package require math::special ?0.3? ::math::special::Beta x y ::math::special::Gamma x ::math::special::erf x ::math::special::erfc x ::math::special::invnorm p ::math::special::J0 x ::math::special::J1 x ::math::special::Jn n x ::math::special::J1/2 x ::math::special::J-1/2 x ::math::special::I_n x ::math::special::cn u k Code may have any of the following values: ok (or 0) Normal return: same as if the option is omitted. http://colinmeldrum.com/tcl-error/tcl-error-out.html The catch command returns 0 if there is no error, and 1 if there is an error.

It is provided so that procedures that implement new control structures can reflect exceptional conditions back to their callers. Tcl Errorinfo It is also the mechanism by which commands like break, continue, and return cause script evaluation to terminate without evaluating all commands in sequence. Conversely, database errors that occur within PL/Tcl's spi_exec, spi_prepare, and spi_execp commands are reported as Tcl errors, so they are catchable by Tcl's catch command.

The return code of the procedure is 0 (TCL_OK).

If no -errorstack option is provided to return when the -code error option is provided, Tcl will provide its own initial error stack in the entry for -errorstack. Fields that may be present include detail, hint, context, schema, table, column, datatype, constraint, statement, cursor_position, filename, lineno, and funcname. float u Argument for the function float k Parameter ::math::special::dn u k Compute the elliptic function dn for the argument "u" and parameter "k". Tcl Exit Procedure The main reason to implement them like that was that it was fast to do (the formulas are simple) and the computations are fast too.

return -level 0 -code break is the same as break. (TCL_BREAK)4continueInstruct the next level up to terminate the current iteration of the innermost nested loop in the code that invoked the return -level 0 -code error is the same as error. (TCL_ERROR)2returnInstruct the next level up to return. The error stack will also be reachable through info errorstack. http://colinmeldrum.com/tcl-error/tcl-tk-error.html Without the parentheses, it is a variable.

An example for simple error handling is shown below − #!/usr/bin/tclsh proc Div {a b} { if {$b == 0} { error "Error generated by error" "Info String for error" 401 Then info is the initial stack trace, meant to provide to a human reader additional information about the context in which the error occurred. Similarly, it is possible to catch the error generated by Tcl. Please also report any ideas for enhancements you may have for either package and/or documentation.

error (or 1) Error return: the return code of the procedure is 1 (TCL_ERROR). No list indexing means no requirement to be a list. proc returnX {} {return X} puts [returnX] ;# prints "X" Next, a more complete example, using return -code error to report invalid arguments. Tcl's initial error stack will include only the call to the procedure, and stack unwinding will append information about higher stack levels, but there will be no information about the context

Please report such in the category math :: special of the Tcllib Trackers. The procedure command behaves in its calling context as if it were the command continue. However, the -code option may be used to generate an exceptional return from the procedure. In general usage, all option value pairs given as arguments to return become entries in the return options dictionary, and any values at all are acceptable except as noted below.

wiki.tcl.tk return Updated 2016-10-06 02:05:46 by pooryorick ▲ return, a built-in Tcl command, returns a value, a code and other options from a particular level. Tcl's initial stack trace will include only the call to the procedure, and stack unwinding will append information about higher stack levels, but there will be no information about the context Typically the info value is supplied from the value left in errorInfo after a catch command trapped an error within the procedure. return puts "line 2" ;# This line will not be printed. } Next, an example of using return to set the value returned by the procedure.

As documented above, the -code entry in the return options dictionary receives special treatment by Tcl. Typically the list value is supplied from the value of -errorstack in a return options dictionary captured by the catch command (or from the copy of that information from info errorstack). Let the file t.tcl contain:return { one 1 two 2 three 3 }Then you can write it like this:array set myArrayName [source t.tcl] ;# RSwdb: This works, but being a purist, Such errors can be caught within Tcl using the Tcl catch command.

test 001 crt error() See Also BASIC Functions procread Statement procwrite Statement tclread Statement HesabımAramaHaritalarYouTubePlayHaberlerGmailDriveTakvimGoogle+ÇeviriFotoğraflarDaha fazlasıDokümanlarBloggerKişilerHangoutsGoogle'a ait daha da fazla uygulamaOturum açınGizli alanlarKitaplarbooks.google.com.tr - Complete guide to developing Linux games, written By default, the value of -code is ok and the value of -level is 1.