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(librep.info)Numeric Predicates

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Numeric Predicates
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   For the documentation of the functions `=', `/=', `>', `<', `>=',
`<=', `max' and `min', see Note: Comparison Predicates.

 - Function: exactp object
     Returns true when OBJECT is an exact number.

 - Function: inexactp object
     Returns true when OBJECT is an inexact number.

 - Function: integerp object
     Returns true when OBJECT is an integer.

 - Function: rationalp object
     Returns true when OBJECT is a rational number (including integers).

 - Function: realp object
     Returns true when OBJECT is a real number.

 - Function: oddp x
     Return true if X is an odd number.

 - Function: evenp x
     Return true if X is an even number.

 - Function: positivep x
     Return true if X is a number greater than zero.

 - Function: negativep x
     Return true if X is a number less than zero.

 - Function: zerop x
     Returns true if X is equal to zero.