Glen Whitney
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Generic types can be called with argument(s) to produce a new type object, and if all types supplied as arguments are concrete, then the result will be a concrete type. The test of a generic type must determine if the entity is an instance of any specialization of the type; and it must also have a `refine` method that takes such an instance and returns its fully-specialized concrete type. It must also have a method `specializesTo` that takes a concrete type and returns whether that concrete type is a specialization of this generic type. This commit also defines a generic Complex number type, that can have any type as its Component type (including another Complex number, to create e.g. quaternions), and defines the conversion/constructor function `complex`. Reviewed-on: #21 Co-authored-by: Glen Whitney <glen@studioinfinity.org> Co-committed-by: Glen Whitney <glen@studioinfinity.org>
12 lines
485 B
JavaScript
12 lines
485 B
JavaScript
import assert from 'assert'
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import math from '#nanomath'
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describe('complex type operations', () => {
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it('converts to number', () => {
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assert.deepStrictEqual(math.complex(3), {re: 3, im: 0})
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assert.deepStrictEqual(math.complex(NaN), {re: NaN, im: NaN})
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assert.deepStrictEqual(math.complex(3, -1), {re: 3, im: -1})
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assert.deepStrictEqual(math.complex(false, true), {re: false, im: true})
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assert.throws(() => math.complex(3, false), RangeError)
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})
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})
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