26 lines
1.2 KiB
TypeScript
26 lines
1.2 KiB
TypeScript
import type {configDependency} from '../core/Config.js'
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import type {Dependencies, Signature} from '../interfaces/type.js'
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export const add: Signature<'add', number> = (a, b) => a + b
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export const unaryMinus: Signature<'unaryMinus', number> = a => -a
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export const conj: Signature<'conj', number> = a => a
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export const subtract: Signature<'subtract', number> = (a, b) => a - b
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export const multiply: Signature<'multiply', number> = (a, b) => a * b
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export const absquare: Signature<'absquare', number> = a => a * a
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export const reciprocal: Signature<'reciprocal', number> = a => 1 / a
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export const divide: Signature<'divide', number> = (a, b) => a / b
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const basicSqrt = a => isNaN(a) ? NaN : Math.sqrt(a)
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export const conservativeSqrt: Signature<'conservativeSqrt', number> = basicSqrt
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export const sqrt =
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(dep: configDependency & Dependencies<'complex', number>):
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Signature<'sqrt', number> => {
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if (dep.config.predictable || !dep.complex) return basicSqrt
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return a => {
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if (isNaN(a)) return NaN
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if (a >= 0) return Math.sqrt(a)
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return dep.complex(0, Math.sqrt(unaryMinus(a)))
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}
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}
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