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

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== ISNA  ==
 
== ISNA  ==
 
Tests for the <tt>'''#N/A'''</tt> (Not Available) error value.  
 
Tests for the <tt>'''#N/A'''</tt> (Not Available) error value.  
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=== Syntax: ===
 
=== Syntax: ===
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:Returns <tt>'''TRUE'''</tt> if <tt>'''value'''</tt> is or refers to the <tt>'''#N/A'''</tt> (Not Available) error and <tt>'''FALSE'''</tt> otherwise.
 
:Returns <tt>'''TRUE'''</tt> if <tt>'''value'''</tt> is or refers to the <tt>'''#N/A'''</tt> (Not Available) error and <tt>'''FALSE'''</tt> otherwise.
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=== Example: ===
 
=== Example: ===
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: where A1 contains <tt>'''"dog"'''</tt>, returns <tt>'''FALSE'''</tt>, because <tt>'''"dog"'''</tt> is text, not an error.
 
: where A1 contains <tt>'''"dog"'''</tt>, returns <tt>'''FALSE'''</tt>, because <tt>'''"dog"'''</tt> is text, not an error.
  
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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: ISERROR function|ISERROR]]
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* [[Documentation/How_Tos/Calc: NA function|NA]]
  
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=== See also: ===
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* [[Documentation/How_Tos/Calc: Information functions|Information functions]]
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'''[[Documentation/How_Tos/Calc: ISERR function|ISERR function]]''',
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'''[[Documentation/How_Tos/Calc: ISERROR function|ISERROR function]]''',
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'''[[Documentation/How_Tos/Calc: NA function|NA function]]'''
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'''[[Documentation/How_Tos/Calc: Information functions|Information functions]]'''
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* [[Documentation/How_Tos/Calc: Functions listed alphabetically|Functions listed alphabetically]]
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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 13:18, 31 January 2024

ISNA

Tests for the #N/A (Not Available) error value.

Syntax:

ISNA(value)

Returns TRUE if value is or refers to the #N/A (Not Available) error and FALSE otherwise.

Example:

ISNA(NA())

returns TRUE, because NA() returns the #N/A error.

ISNA(1/0)

returns FALSE, because 1/0 is a #DIV/0! error, not a #N/A error.

ISNA(A1)

where A1 contains "dog", returns FALSE, because "dog" is text, not an error.


See Also
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