Test output for quaternions [fail]

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Testing time: 0s

/home/mario/local/chicken-4.8.0.3/bin/csi -script run.scm < /dev/null

Error: (quotient) bad argument type - not an integer: 3.14159265

	Call history:

	<eval>	  [=5] (to-5-dp n1)
	<eval>	  [to-5-dp] (/ (round (* f 100000)) 100000)
	<eval>	  [to-5-dp] (round (* f 100000))
	<eval>	  [to-5-dp] (* f 100000)
	<eval>	  [=5] (to-5-dp n2)
	<eval>	  [to-5-dp] (/ (round (* f 100000)) 100000)
	<eval>	  [to-5-dp] (round (* f 100000))
	<eval>	  [to-5-dp] (* f 100000)
	<eval>	  (>=337 check:mode338 1)
	<eval>	  (check:proc339 (quote340 (angle q)) (lambda341 () (angle q)) =mod-pi 2.0)
	<eval>	  (angle q)
	<eval>	  [=mod-pi] (= (to-5-dp (modulo (make-positive a1) PI)) (to-5-dp (modulo (make-positive a2) PI)))
	<eval>	  [=mod-pi] (to-5-dp (modulo (make-positive a1) PI))
	<eval>	  [=mod-pi] (modulo (make-positive a1) PI)
	<eval>	  [=mod-pi] (make-positive a1)
	<eval>	  [make-positive] (>= n 0)	<--

(number? q1) => #t ; correct

(number? q2) => #t ; correct

(number? q3) => #t ; correct

(quaternion? q1) => #t ; correct

(quaternion? q2) => #t ; correct

(quaternion? q3) => #t ; correct

(real-part q1) => 0 ; correct

(real-part q2) => 0 ; correct

(imag-part q2) => 1 ; correct

(real-part q3) => 0 ; correct

(imag-part q3) => 1 ; correct

(jmag-part q3) => 2 ; correct

(kmag-part q3) => 3 ; correct

(magnitude 4) => 4 ; *** failed ***
 ; expected result: 4.0

(magnitude (make-rectangular 1 2)) => 2.23606797749979 ; correct

(magnitude q3) => 3.74165738677394 ; correct

(angle 2+2i) => 0.785398163397448 ; correct

(angle q3) => 1.5707963267949 ; correct

(= 3 3) => #t ; correct

(= q1 0) => #t ; correct

(= q2 0+1i) => #t ; correct

(= q3 (make-rectangular 0 1 2 3)) => #t ; correct

(= q1 q2) => #f ; correct

(= q2 q3) => #f ; correct

(= q3 (make-rectangular 0 1 2 4)) => #f ; correct

(= q3 (make-rectangular 0 1 4 3)) => #f ; correct

(+ q3 q3) => 0+2i+4j+6k ; correct

(+ 1+2i q3) => 1+3i+2j+3k ; correct

(- q3 1+2i) => -1-1i+2j+3k ; correct

(* 2 q3) => 0+2i+4j+6k ; correct

(/ (make-rectangular 2 4 6 8) 2) => 1+2i+3j+4k ; correct

(magnitude q) => 1.0 ; correct

(angle q) => 2.0 ;