| // RUN: %empty-directory(%t) |
| // RUN: %target-build-swift %s -parse-stdlib -o %t/Builtins |
| // RUN: %target-codesign %t/Builtins |
| // RUN: %target-run %t/Builtins |
| // REQUIRES: executable_test |
| |
| import Swift |
| import StdlibUnittest |
| |
| var BuiltinDifferentialOperatorTests = TestSuite("BuiltinDifferentialOperators") |
| |
| BuiltinDifferentialOperatorTests.test("Unary") { |
| func func_to_diff(x: Float) -> Float { |
| return x * x |
| } |
| let (y, pullback) = Builtin.autodiffApply_vjp(func_to_diff, 4) |
| expectEqual(16, y) |
| expectEqual(8, pullback(1)) |
| } |
| |
| BuiltinDifferentialOperatorTests.test("Binary") { |
| func func_to_diff(x: Float, y: Float) -> Float { |
| return x * y |
| } |
| let (y, pullback) = Builtin.autodiffApply_vjp_arity2(func_to_diff, 4, 5) |
| expectEqual(20, y) |
| expectEqual((5, 4), pullback(1)) |
| } |
| |
| runAllTests() |
