CERN home page CERN home page Consult pages Consult pages Writeups at CERN Writeups at CERN Garfield pages Garfield pages Help Help algebra algebra OPTIONS OPTIONS Search Keyword index

algebra: OPTIONS


SYNTAX-CHECK

New instructions entered via INSERT are checked by default (ALGEBRA-SYNTAX-CHECK) on correct syntax as part of a sequential algebra instruction list, which can in principle be executed entirely within the ALGEXn routines.

The instruction codes for return, goto, argument and call are processed at a higher level. Such instruction codes are used for instance when addressing elements of matrices. These codes are accepted only if you have set PROCEDURE-SYNTAX-CHECK.

You may change also switch syntax checking off altogether.


IGNORE-EXPONENTIAL-UNDERFLOW

If the SIGNAL-EXPONENTIAL-UNDERFLOW option is in effect, which is the initial setting, exponentials of negative numbers less than -40 are signalled as underflows. Formulae in which they occur are not evaluated.

To have such exponentials set to 0 and to continue evaluating the formula, the IGNORE-EXPONENTIAL-UNDERFLOW option is used. When IGNORE-EXPONENTIAL-UNDERFLOW is in effect, underflows are not counted.

Note that this option applies only to exponentials evaluated by algebraic expressions, not to exponentials computed by regular Garfield commands.

These options may also be written IGNORE-UNDERFLOW and SIGNAL-UNDERFLOW.


Go to the top level, to algebra, to OPTIONS, to the topic index, to the table of contents, or to the full text.

Formatted on 0108-09- at 08:33.