chibi-scheme/tests/snow/repo4/euler/exponential-test.sld

19 lines
666 B
Scheme

(define-library (euler exponential-test)
(export run-tests)
(import (scheme base) (scheme process-context) (euler exponential))
(begin
(define (test expect expr)
(cond
((not (or (equal? expect expr)
(and (or (inexact? expect) (inexact? expr))
(let ((a (min expect expr))
(b (max expect expr)))
(< (abs (/ (- a b) b)) 0.000001)))))
(write-string "FAIL\n")
(exit 1))))
(define (run-tests)
(test 0.36788 (e -1.0))
(test 1.0 (e 0.0))
(test 2.71828 (e 1.0))
(test 4.48167 (e 1.5))
(test 7.38871 (e 2.0)))))