Manuals/calci/ISNA

ISNA (Thing)

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle Thing} is any value to test.
- ISNA(),returns TRUE if the value is the #NA error value.

Description

This function is the tester function of error values.
In Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle ISNA()} ,the parameter is any value which we want to test.
If the given parameter is #N/A error value then this function will return the result as TRUE.
If the given parameter is not a error value then this function will return as FALSE.