Created
March 18, 2011 04:44
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Simple function (and helper function) to calculate Sine using Scheme
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| (define (factorial n) | |
| (if (= n 0) | |
| 1 | |
| (* n (factorial (- n 1))))) | |
| (define (sine x . n) | |
| (cond ((not (null? n)) | |
| (cond ((< 13 (car n)) | |
| 0) | |
| (else (- (/ (expt x (car n)) (factorial (car n))) | |
| (sine x (+ 2 (car n))))))) | |
| (else (- x (sine x 3))))) |
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