Difference between revisions of "Documentation/How Tos/Calc: ISERROR function"
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< Documentation | How Tos
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=== See also: === | === See also: === | ||
| − | '''[[Documentation/How_Tos/Calc: ISERR function|ISERR | + | '''[[Documentation/How_Tos/Calc: ISERR function|ISERR]]''', |
| − | '''[[Documentation/How_Tos/Calc: ISNA function|ISNA | + | '''[[Documentation/How_Tos/Calc: ISNA function|ISNA]]''', |
| − | '''[[Documentation/How_Tos/Calc: NA function|NA | + | '''[[Documentation/How_Tos/Calc: NA function|NA]]''' |
'''[[Documentation/How_Tos/Calc: Information functions|Information functions]]''' | '''[[Documentation/How_Tos/Calc: Information functions|Information functions]]''' | ||
Revision as of 06:31, 13 September 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.
See also:
Functions listed alphabetically, Functions listed by category
Issues:
- CHOOSE(0;"A";"B";"C";"D") returns Err:502 (correctly - the index is out of range) but ISERROR(CHOOSE(0;"A";"B";"C";"D")) also returns Err:502, rather than TRUE. The error is propagated rather than evaluated.
