JETDSP Toolkit
JETDSP Toolkit
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ISNUMERICDetermines whether its argument is a numeric string. SyntaxResult = ISNUMERIC(Variable [/FLOAT])Return ValueReturns a byte value set to 1 if the variable is made up of the digits '0123456789-' and possibly '.eE', otherwise 0.The '.eE' characters are only allowed if the /FLOAT keyword is set. NB returns 0 if the string contains a blank. ArgumentsVariableThe name of the variable to be tested.KeywordsFLOATSet this keyword if the test is to treat '.', 'e' and 'E' as valid numeric characters (i.e., if the test is to return true for strings representing floating point numbers). |