Difference between revisions of "Documentation/How Tos/Calc: ISERROR function"
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== ISERROR == | == ISERROR == | ||
Tests for any error value. | Tests for any error value. | ||
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=== Syntax: === | === Syntax: === | ||
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:Use the <tt>'''ISERR'''</tt> function to test for any errors <u>except</u> <tt>'''#N/A'''</tt>. | :Use the <tt>'''ISERR'''</tt> function to test for any errors <u>except</u> <tt>'''#N/A'''</tt>. | ||
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=== Example: === | === Example: === | ||
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<tt>'''ISERROR(NA())'''</tt> | <tt>'''ISERROR(NA())'''</tt> | ||
: returns <tt>'''TRUE'''</tt>, because <tt>'''NA()'''</tt> returns the <tt>'''#N/A'''</tt> error. | : returns <tt>'''TRUE'''</tt>, because <tt>'''NA()'''</tt> returns the <tt>'''#N/A'''</tt> error. | ||
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=== See also: === | === See also: === | ||
Revision as of 13:04, 19 January 2008
ISERROR
Tests for any error value.
Syntax:
ISERROR(value)
- Returns TRUE if value refers to or evaluates to any error value, including #N/A, and FALSE otherwise.
- Use the ISERR function to test for any errors except #N/A.
Example:
ISERROR(SQRT(-1))
- returns TRUE, because taking the squareroot of -1 is an error.
ISERROR(C5)
- where C5 contains 123, returns FALSE, because 123 is not an error.
ISERROR(NA())
- returns TRUE, because NA() returns the #N/A error.
