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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<tt>'''ISNA(A1)'''</tt> | <tt>'''ISNA(A1)'''</tt> | ||
: 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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=== See also: === | === See also: === | ||
Revision as of 13:03, 19 January 2008
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.
