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| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
|---|---|---|
| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
| commit | fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch) | |
| tree | bdda434976bc09c864f2e4fa6f16ba1952b1e555 /pkg/language/doc/error.hlp | |
| download | iraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz | |
Initial commit
Diffstat (limited to 'pkg/language/doc/error.hlp')
| -rw-r--r-- | pkg/language/doc/error.hlp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/pkg/language/doc/error.hlp b/pkg/language/doc/error.hlp new file mode 100644 index 00000000..9a312de1 --- /dev/null +++ b/pkg/language/doc/error.hlp @@ -0,0 +1,40 @@ +.help error Feb86 language +.ih +NAME +error -- abort a task +.ih +USAGE +error errcode errmsg +.ih +PARAMETERS +.ls errcode +An integer code identifying the error (not used at present in the CL since +error handlers are not supported). +.le +.ls errmsg +A string describing the error. +.le +.ih +DESCRIPTION +\fIError\fR may be used to force an error exit from a script. +The error message will be displayed, and control will return to the +most recent interactive cl. +.ih +EXAMPLES +1. Abort the current task if there is an attempt to compute a negative +square root. + +.nf + if (x < 0) + error (1, "sqrt of a negative number (x=" // x // ")") + else + y = sqrt (x) +.fi +.ih +BUGS +There is currently no way to post an error handler to receive control +if \fIerror\fR is called. +.ih +SEE ALSO +cl, bye, logout +.endhelp |