Syntax:

minusp real => generalized-boolean

plusp real => generalized-boolean

Arguments and Values:

real---a real.

generalized-boolean---a generalized boolean.

Description:

minusp returns true if real is less than zero; otherwise, returns false.

plusp returns true if real is greater than zero; otherwise, returns false.

Regardless of whether an implementation provides distinct representations for positive and negative float zeros, (minusp -0.0) always returns false.

Examples:

 (minusp -1) =>  true
 (plusp 0) =>  false
 (plusp least-positive-single-float) =>  true

Side Effects: None.

Affected By: None.

Exceptional Situations:

Should signal an error of type type-error if real is not a real.

See Also: None.

Notes: None.