Difference between revisions of "Documentation/How Tos/Calc: ISERROR function"

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{{DISPLAYTITLE:ISERROR function}}
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== ISERROR  ==
 
== ISERROR  ==
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=== Example: ===
 
=== Example: ===
 
<tt>'''ISERROR(SQRT(-1))'''</tt>
 
<tt>'''ISERROR(SQRT(-1))'''</tt>
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: returns <tt>'''TRUE'''</tt>, because taking the squareroot of -1 is an error.
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: returns <tt>'''TRUE'''</tt>, because taking the square root of -1 is an error.
  
 
<tt>'''ISERROR(C5)'''</tt>
 
<tt>'''ISERROR(C5)'''</tt>
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: 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: ===
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=== Issues: ===
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'''[[Documentation/How_Tos/Calc: ISERR function|ISERR]]''',
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* <tt>'''CHOOSE(0;"A";"B";"C";"D")'''</tt> returns <tt>'''Err:502'''</tt> (correctly - the index is out of range) but  <tt>'''ISERROR(CHOOSE(0;"A";"B";"C";"D"))'''</tt> also returns <tt>'''Err:502'''</tt>, rather than <tt>'''TRUE'''</tt>. The error is propagated rather than evaluated.
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'''[[Documentation/How_Tos/Calc: ISNA function|ISNA]]''',
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'''[[Documentation/How_Tos/Calc: NA function|NA]]'''
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'''[[Documentation/How_Tos/Calc: Information functions|Information functions]]'''
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{{SeeAlso|EN|
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* [[Documentation/How_Tos/Calc: ISERR function|ISERR]]
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* [[Documentation/How_Tos/Calc: ISNA function|ISNA]]
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* [[Documentation/How_Tos/Calc: NA function|NA]]
  
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[[Documentation/How_Tos/Calc: Functions listed alphabetically|'''Functions listed alphabetically''']],
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* [[Documentation/How_Tos/Calc: Information functions|Information functions]]
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[[Documentation/How_Tos/Calc: Functions listed by category|'''Functions listed by category''']]
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=== Issues: ===
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* [[Documentation/How_Tos/Calc: Functions listed alphabetically|Functions listed alphabetically]]
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* <tt>'''CHOOSE(0;"A";"B";"C";"D")'''</tt> returns <tt>'''Err:502'''</tt> (correctly - the index is out of range) but  <tt>'''ISERROR(CHOOSE(0;"A";"B";"C";"D"))'''</tt> also returns <tt>'''Err:502'''</tt>, rather than <tt>'''TRUE'''</tt>. The error is propagated rather than evaluated.
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* [[Documentation/How_Tos/Calc: Functions listed by category|Functions listed by category]]}}
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[[Category: Documentation/Reference/Calc/Information functions]]

Latest revision as of 13:15, 31 January 2024

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 square root 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.

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.


See Also
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