HP 48gII Graphing Calculator Manual do Utilizador descarregar pdf (Página 714)

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ERRM

This function returns a character string representing the error message of the

most recent error. For example, in Approx mode, if you try 0Y$@ERRM,

you get the following string: “Infinite Result”

ERR0

This function clears the last error number, so that, executing ERRN afterwards,

in Approx mode, will return # 0h. For example, if you try

0Y$@ERR0 @ERRN, you get # 0h. Also, if you try

0Y$@ERR0 @ERRM, you get the empty string “ “.

LASTARG

This function returns copies of the arguments of the command or function

executed most recently. For example, in RPN mode, if you use:

3/2`, and then use function LASTARG (@LASTA), you will get the

values 3 and 2 listed in the stack. Another example, in RPN mode, is the

following: 5U`. Using LASTARG after these entries produces a 5.

Sub-menu IFERR

The @)IFERR sub-menu provides the following functions:

These are the components of the IFERR … THEN … END construct or of the

IFERR … THEN … ELSE … END construct. Both logical constructs are used

for trapping errors during program execution. Within the @)ERROR sub-menu,

entering „@)IFERR, or ‚@)IFERR, will place the IFERR structure components in

the stack, ready for the user to fill the missing terms, i.e.,

The general form of the two error-trapping constructs is as follows:

1 2 ... 709 710 711 712 713 714 715 716 717 718 719 ... 863 864

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HP 48gII Graphing Calculator Manual do Utilizador Página 714

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