feat: convert sqrt for numbers

This commit is contained in:
Jos de Jong 2023-09-21 15:02:42 +02:00
parent 20078d2c87
commit 0ebaaf35ee
3 changed files with 29 additions and 14 deletions

View File

@ -7,7 +7,7 @@
test: 'echo "Error: no test specified" && exit 1',
build: 'mkdirp build && cpy etc/package.json build --flat && tsc',
start: 'node build',
go: 'pnpm --sequential "/build|start/"',
go: 'pnpm --sequential "/clean|build|start/"',
clean: 'del-cli build',
},
packageManager: 'pnpm',

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@ -8,17 +8,30 @@ import {absquare as absquare_complex} from './Complex/arithmetic.js'
const mockRealAdd = (a: number, b: number) => a+b
const mockComplexAbsquare = (z: Complex<number>) => z.re*z.re + z.im*z.im
const mockComplex = (re: number, im: number) => ({ re, im })
const config = {
predictable: false,
epsilon: 1e-14
}
const quatAbsquare = absquare_complex({
add: mockRealAdd,
absquare: mockComplexAbsquare
add: mockRealAdd,
absquare: mockComplexAbsquare
})
const myabs = quatAbsquare({re: {re: 0, im: 1}, im: {re:2, im: 3}})
const typeTest: typeof myabs = 7 // check myabs is just a number
console.log('Result is myabs=', myabs)
console.log('Result is', myabs)
const sqrt = Specifications.numbers.sqrt({
config,
complex: mockComplex
})
console.log('Result of sqrt(16)=', sqrt(16))
console.log('Result of sqrt(-4)=', sqrt(-4))
// Check type of the generic square implementation
console.log('Type of sqrt (number) is', Specifications.numbers.sqrt.reflectedType)
console.log('Type of square is', Specifications.generic.square.reflectedType)
console.log('Type of complex square root is', Specifications.complex.sqrt.reflectedType)

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@ -1,5 +1,6 @@
import type {configDependency} from '../core/Config.js'
import type {Dependencies, Signature} from '../interfaces/type.js'
import { $implement } from '../interfaces/type.js'
export const add: Signature<'add', number> = (a, b) => a + b
export const unaryMinus: Signature<'unaryMinus', number> = a => -a
@ -13,13 +14,14 @@ export const divide: Signature<'divide', number> = (a, b) => a / b
const basicSqrt = a => isNaN(a) ? NaN : Math.sqrt(a)
export const conservativeSqrt: Signature<'conservativeSqrt', number> = basicSqrt
export const sqrt =
(dep: configDependency & Dependencies<'complex', number>):
Signature<'sqrt', number> => {
if (dep.config.predictable || !dep.complex) return basicSqrt
return a => {
if (isNaN(a)) return NaN
if (a >= 0) return Math.sqrt(a)
return dep.complex(0, Math.sqrt(unaryMinus(a)))
}
}
$implement!('sqrt',
(dep: configDependency & Dependencies<'complex', number>): Signature<'sqrt', number> => {
if (dep.config.predictable || !dep.complex) {
return basicSqrt
}
return a => {
if (isNaN(a)) return NaN
if (a >= 0) return Math.sqrt(a)
return dep.complex(0, Math.sqrt(unaryMinus(a)))
}
})