diff options
Diffstat (limited to 'coding-exercises')
| -rw-r--r-- | coding-exercises/2/83/install-complex.rkt | 6 | ||||
| -rw-r--r-- | coding-exercises/2/83/install-real.rkt | 2 | ||||
| -rw-r--r-- | coding-exercises/2/87.rkt | 15 |
3 files changed, 6 insertions, 17 deletions
diff --git a/coding-exercises/2/83/install-complex.rkt b/coding-exercises/2/83/install-complex.rkt index e3dfe52..df46817 100644 --- a/coding-exercises/2/83/install-complex.rkt +++ b/coding-exercises/2/83/install-complex.rkt @@ -153,12 +153,6 @@ (make-from-mag-ang (mul (magnitude z1) (magnitude z2)) (add (angle z1) (angle z2)))) (define (div-complex z1 z2) - (newline) - (display "DIV-COMPLEX") - (newline) - (display (list z1 z2)) - (newline) - (display (list (magnitude z1) (magnitude z2))) (make-from-mag-ang (div (magnitude z1) (magnitude z2)) (sub (angle z1) (angle z2)))) diff --git a/coding-exercises/2/83/install-real.rkt b/coding-exercises/2/83/install-real.rkt index 356ac92..45b1a6c 100644 --- a/coding-exercises/2/83/install-real.rkt +++ b/coding-exercises/2/83/install-real.rkt @@ -9,7 +9,7 @@ (attach-tag 'real datum)) (define (make i) (let ((n (exact->inexact i))) - (if (< n threshold) + (if (< (abs n) threshold) 0.0 n))) (define (raiseme r) diff --git a/coding-exercises/2/87.rkt b/coding-exercises/2/87.rkt index d697781..4624dda 100644 --- a/coding-exercises/2/87.rkt +++ b/coding-exercises/2/87.rkt @@ -263,11 +263,6 @@ (list (the-empty-termlist L1) L1) (let ((new-c (div (coeff t1) (coeff t2))) (new-o (- (order t1) (order t2)))) - (display (list new-c new-o t1 t2 (sub-terms L1 - (mul-terms - (make-term-list (list (make-term new-o new-c))) - L2)))) - (newline) (let ((rest-of-result (div-terms (sub-terms L1 (mul-terms @@ -320,10 +315,11 @@ (term 1 test-integer)))) (define test-poly2 (make-polynomial 'x (sparse-termlist (term 100 test-complex) + (term 2 test-real) (term 1 test-rat) (term 0 test-integer)))) (define test-poly3 (make-polynomial 'x (sparse-termlist - (term 1 2) + (term 50 test-rat) (term 0 2)))) ((lambda () (newline) @@ -366,7 +362,7 @@ (display (sub test-dense-poly test-poly3)))) ;; 91 -;; Fill in the gaps excercise, should be easy right? :^) +;; Fill in the gaps excercise, should be easy right? :^) (NOTE(mike): it wasn't.) ((lambda () (newline) (display (div test-poly3 test-poly3)) @@ -374,8 +370,7 @@ (display (div (make-polynomial 'x (dense-termlist (term 3 100))) (make-polynomial 'x (dense-termlist (term 3 10))))) (newline) + (display (div test-poly2 test-poly1)) (newline) - (display (list test-poly2 test-poly1)) (newline) - (newline) - (display (div test-poly2 test-poly1)))) + (display (div test-poly2 test-poly3)))) |