Ad5001/LogarithmPlotter
Ad5001/LogarithmPlotter
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Starting expr-eval's tests.

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This commit is contained in:
Adsooi 2024-10-12 20:37:16 +02:00
parent 345458f453
commit edf4518494
Signed by: Ad5001
GPG key ID: EF45F9C6AFE20160
8 changed files with 203 additions and 22 deletions
common/src/module
expreval.mjs

8
common/src/module/expreval.mjs
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@ -84,11 +84,11 @@ class ExprParserAPI extends Module {
return this.#parser.parse(expression)
}
integral(a, b, ...args) {
integral(a = null, b = null, ...args) {
let usage1 = qsTranslate("usage", "integral(<from: number>, <to: number>, <f: ExecutableObject>)")
let usage2 = qsTranslate("usage", "integral(<from: number>, <to: number>, <f: string>, <variable: string>)")
let f = this.parseArgumentsForFunction(args, usage1, usage2)
if(a == null || b == null)
if(typeof a !== "number" || typeof b !== "number")
throw EvalError(qsTranslate("usage", "Usage:\n%1\n%2").arg(usage1).arg(usage2))
// https://en.wikipedia.org/wiki/Simpson%27s_rule
@ -101,10 +101,10 @@ class ExprParserAPI extends Module {
let usage2 = qsTranslate("usage", "derivative(<f: string>, <variable: string>, <x: number>)")
let x = args.pop()
let f = this.parseArgumentsForFunction(args, usage1, usage2)
if(x == null)
if(typeof x !== "number")
throw EvalError(qsTranslate("usage", "Usage:\n%1\n%2").arg(usage1).arg(usage2))
let derivative_precision = x / 10
let derivative_precision = 1e-8
return (f(x + derivative_precision / 2) - f(x - derivative_precision / 2)) / derivative_precision
}
}