commit 21f68340a2a50841bbd819b4ca85d395fd6ba4fa parent ffb89259cadada9cdaf90f1ea5c599c4f3b0ce8e Author: Ed van Bruggen <edvb@uw.edu> Date: Sun, 22 Mar 2020 21:13:54 -0700 Replace complicated code to generate trig inverses Diffstat:
| tibs/lib.tsp | | | 26 | +++++++++++++------------- |
1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/tibs/lib.tsp b/tibs/lib.tsp @@ -340,19 +340,19 @@ (defmacro (-- x . n) `(set! ,x (- ,x ,(default n 1)))) -; define inverse trig functions -(let (((def inv func) - (eval (list 'define (list inv 'x) (list '/ (list func 'x))))) - ((def* inv func) - (def inv func) - (def (symbol inv 'h) (symbol func 'h))) - ((def** inv func) - (def* inv func) - (def* (symbol 'arc inv) (symbol 'arc func)))) - (recur f ((lst '((csc sin) (sec cos) (cot tan)))) - (when lst - (apply def** (car lst)) - (f (cdr lst))))) +; inverse trig functions +(define (csc x) (/ (sin x))) +(define (arccsc x) (/ (arcsin x))) +(define (csch x) (/ (sinh x))) +(define (arccsch x) (/ (arcsinh x))) +(define (sec x) (/ (cos x))) +(define (arcsec x) (/ (arccos x))) +(define (sech x) (/ (cosh x))) +(define (arcsech x) (/ (arccosh x))) +(define (cot x) (/ (tan x))) +(define (arccot x) (/ (arctan x))) +(define (coth x) (/ (tanh x))) +(define (arccoth x) (/ (arctanh x))) (define (abs x) (if (>= x 0) x (- x))) (define (sgn x) (if (= x 0) x (/ (abs x) x)))