mirror of https://github.com/rusefi/bldc.git
29 lines
513 B
Common Lisp
29 lines
513 B
Common Lisp
(define is-number
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(lambda (x)
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(if (= (type-of x) type-i28)
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't
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(if (= (type-of x) type-u28)
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't
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(if (= (type-of x) type-float)
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't
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(if (= (type-of x) type-i32)
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't
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(if (= (type-of x) type-u32)
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't
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'nil)))))))
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(define sumtree
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(lambda (x)
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(if (is-number x)
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x
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(if (= x 'nil)
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0
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(let ((a (sumtree (car x)))
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(b (sumtree (cdr x))))
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(+ a b)
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)))))
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(= (sumtree (list (list 1u32 1i32 1u28 1 1 1 1 1 1 1) (list 1 2.0) (list 3 4.0))) 20.0)
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