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