22 lines
666 B
TypeScript
22 lines
666 B
TypeScript
import {configDependency} from '../core/Config.js'
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import {Signature} from '../interfaces/type.js'
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const DBL_EPSILON = Number.EPSILON || 2.2204460492503130808472633361816E-16
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export const equal =
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(dep: configDependency): Signature<'equal', number> =>
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(x, y) => {
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const eps = dep.config.epsilon
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if (eps === null || eps === undefined) return x === y
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if (x === y) return true
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if (isNaN(x) || isNaN(y)) return false
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if (isFinite(x) && isFinite(y)) {
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const diff = Math.abs(x - y)
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if (diff < DBL_EPSILON) return true
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return diff <= Math.max(Math.abs(x), Math.abs(y)) * eps
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}
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return false
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}
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