nth-value | Macro |

**Syntax****nth-value**n form → object**Arguments and Values**`n`— a non-negative*integer*; evaluated.`form`— a*form*; evaluated as described below.`object`— an*object*.**Description**Evaluates

`n`and then`form`, returning as its only value the`n`th value*yielded*by`form`, or**nil**if`n`is greater than or equal to the number of*values*returned by`form`. (The first returned value is numbered`0`

.)**Examples**(nth-value 0 (values 'a 'b)) → A (nth-value 1 (values 'a 'b)) → B (nth-value 2 (values 'a 'b)) → NIL (let* ((x 83927472397238947423879243432432432) (y 32423489732) (a (nth-value 1 (floor x y))) (b (mod x y))) (values a b (= a b))) → 3332987528, 3332987528,

*true***See Also****Notes**Operationally, the following relationship is true, although

**nth-value**might be more efficient in some*implementations*because, for example, some*consing*might be avoided.(nth-value

`n``form`) ≡ (nth`n`(multiple-value-list`form`))