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b4fb57459d
`Array.TangentVector` conformance to `AdditiveArithmetic` was incorrect as the returned values weren't negated if the lhs was an empty vector (considered to be a zero tangentvector)
38 lines
1023 B
Swift
38 lines
1023 B
Swift
// RUN: %target-run-simple-swift
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// REQUIRES: executable_test
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import _Differentiation
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import StdlibUnittest
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var ArrayDifferentiationTests = TestSuite("ArrayDifferentiation")
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ArrayDifferentiationTests.test("Array.DifferentiableView+") {
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let zero1: Array<Float>.DifferentiableView = [0, 0, 0]
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let zero2: Array<Float>.DifferentiableView = .zero
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let a: Array<Float>.DifferentiableView = [1, 2, 3]
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expectEqual(a + a, [2, 4, 6])
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expectEqual(a + zero1, [1, 2, 3])
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expectEqual(zero1 + a, [1, 2, 3])
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expectEqual(a + zero2, [1, 2, 3])
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expectEqual(zero2 + a, [1, 2, 3])
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}
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ArrayDifferentiationTests.test("Array.DifferentiableView-") {
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let zero1: Array<Float>.DifferentiableView = [0, 0, 0]
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let zero2: Array<Float>.DifferentiableView = .zero
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let a: Array<Float>.DifferentiableView = [1, 2, 3]
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expectEqual(a - a, [0, 0, 0])
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expectEqual(a - zero1, [1, 2, 3])
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expectEqual(zero1 - a, [-1, -2, -3])
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expectEqual(a - zero2, [1, 2, 3])
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expectEqual(zero2 - a, [-1, -2, -3])
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}
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runAllTests()
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