diff options
Diffstat (limited to 'tests/ui/consts/const_let_eq_float.rs')
| -rw-r--r-- | tests/ui/consts/const_let_eq_float.rs | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/tests/ui/consts/const_let_eq_float.rs b/tests/ui/consts/const_let_eq_float.rs new file mode 100644 index 000000000..e15f4b804 --- /dev/null +++ b/tests/ui/consts/const_let_eq_float.rs @@ -0,0 +1,280 @@ +// run-pass + +#![feature(const_fn_floating_point_arithmetic)] + +struct Foo<T>(T); +struct Bar<T> { x: T } +struct W(f32); +struct A { a: f32 } + +#[allow(redundant_semicolons)] +const fn basics((a,): (f32,)) -> f32 { + // Deferred assignment: + let b: f32; + b = a + 1.0; + + // Immediate assignment: + let c: f32 = b + 1.0; + + // Mutables: + let mut d: f32 = c + 1.0; + d = d + 1.0; + // +4 so far. + + // No effect statements work: + ; ; + 1; + + // Array projection + let mut arr: [f32; 1] = [0.0]; + arr[0] = 1.0; + d = d + arr[0]; + // +5 + + // Field projection: + let mut foo: Foo<f32> = Foo(0.0); + let mut bar: Bar<f32> = Bar { x: 0.0 }; + foo.0 = 1.0; + bar.x = 1.0; + d = d + foo.0 + bar.x; + // +7 + + // Array + Field projection: + let mut arr: [Foo<f32>; 1] = [Foo(0.0)]; + arr[0].0 = 1.0; + d = d + arr[0].0; + let mut arr: [Bar<f32>; 1] = [Bar { x: 0.0 }]; + arr[0].x = 1.0; + d = d + arr[0].x; + // +9 + + // Field + Array projection: + let mut arr: Foo<[f32; 1]> = Foo([0.0]); + (arr.0)[0] = 1.0; + d = d + (arr.0)[0]; + let mut arr: Bar<[f32; 1]> = Bar { x: [0.0] }; + arr.x[0] = 1.0; + d = d + arr.x[0]; + // +11 + + d +} + +const fn add_assign(W(a): W) -> f32 { + // Mutables: + let mut d: f32 = a + 1.0; + d += 1.0; + // +2 so far. + + // Array projection + let mut arr: [f32; 1] = [0.0]; + arr[0] += 1.0; + d += arr[0]; + // +3 + + // Field projection: + let mut foo: Foo<f32> = Foo(0.0); + let mut bar: Bar<f32> = Bar { x: 0.0 }; + foo.0 += 1.0; + bar.x += 1.0; + d += foo.0 + bar.x; + // +5 + + // Array + Field projection: + let mut arr: [Foo<f32>; 1] = [Foo(0.0)]; + arr[0].0 += 1.0; + d += arr[0].0; + let mut arr: [Bar<f32>; 1] = [Bar { x: 0.0 }]; + arr[0].x += 1.0; + d += arr[0].x; + // +7 + + // Field + Array projection: + let mut arr: Foo<[f32; 1]> = Foo([0.0]); + (arr.0)[0] += 1.0; + d += (arr.0)[0]; + let mut arr: Bar<[f32; 1]> = Bar { x: [0.0] }; + arr.x[0] += 1.0; + d += arr.x[0]; + // +9 + + d +} + +const fn mul_assign(A { a }: A) -> f32 { + // Mutables: + let mut d: f32 = a + 1.0; + d *= 2.0; + // 2^1 * (a + 1) + + // Array projection + let mut arr: [f32; 1] = [1.0]; + arr[0] *= 2.0; + d *= arr[0]; + // 2^2 * (a + 1) + + // Field projection: + let mut foo: Foo<f32> = Foo(1.0); + let mut bar: Bar<f32> = Bar { x: 1.0 }; + foo.0 *= 2.0; + bar.x *= 2.0; + d *= foo.0 + bar.x; + // 2^4 * (a + 1) + + // Array + Field projection: + let mut arr: [Foo<f32>; 1] = [Foo(1.0)]; + arr[0].0 *= 2.0; + d *= arr[0].0; + let mut arr: [Bar<f32>; 1] = [Bar { x: 1.0 }]; + arr[0].x *= 2.0; + d *= arr[0].x; + // 2^6 * (a + 1) + + // Field + Array projection: + let mut arr: Foo<[f32; 1]> = Foo([1.0]); + (arr.0)[0] *= 2.0; + d *= (arr.0)[0]; + let mut arr: Bar<[f32; 1]> = Bar { x: [1.0] }; + arr.x[0] *= 2.0; + d *= arr.x[0]; + // 2^8 * (a + 1) + + d +} + +const fn div_assign(a: [f32; 1]) -> f32 { + let a = a[0]; + // Mutables: + let mut d: f32 = 1024.0 * a; + d /= 2.0; + // 512 + + // Array projection + let mut arr: [f32; 1] = [4.0]; + arr[0] /= 2.0; + d /= arr[0]; + // 256 + + // Field projection: + let mut foo: Foo<f32> = Foo(4.0); + let mut bar: Bar<f32> = Bar { x: 4.0 }; + foo.0 /= 2.0; + bar.x /= 2.0; + d /= foo.0; + d /= bar.x; + // 64 + + // Array + Field projection: + let mut arr: [Foo<f32>; 1] = [Foo(4.0)]; + arr[0].0 /= 2.0; + d /= arr[0].0; + let mut arr: [Bar<f32>; 1] = [Bar { x: 4.0 }]; + arr[0].x /= 2.0; + d /= arr[0].x; + // 16 + + // Field + Array projection: + let mut arr: Foo<[f32; 1]> = Foo([4.0]); + (arr.0)[0] /= 2.0; + d /= (arr.0)[0]; + let mut arr: Bar<[f32; 1]> = Bar { x: [4.0] }; + arr.x[0] /= 2.0; + d /= arr.x[0]; + // 4 + + d +} + +const fn rem_assign(W(a): W) -> f32 { + // Mutables: + let mut d: f32 = a; + d %= 10.0; + d += 10.0; + + // Array projection + let mut arr: [f32; 1] = [3.0]; + arr[0] %= 2.0; + d %= 9.0 + arr[0]; + d += 10.0; + + // Field projection: + let mut foo: Foo<f32> = Foo(5.0); + let mut bar: Bar<f32> = Bar { x: 7.0 }; + foo.0 %= 2.0; + bar.x %= 2.0; + d %= 8.0 + foo.0 + bar.x; + d += 10.0; + + // Array + Field projection: + let mut arr: [Foo<f32>; 1] = [Foo(4.0)]; + arr[0].0 %= 3.0; + d %= 9.0 + arr[0].0; + d += 10.0; + let mut arr: [Bar<f32>; 1] = [Bar { x: 7.0 }]; + arr[0].x %= 3.0; + d %= 9.0 + arr[0].x; + d += 10.0; + + // Field + Array projection: + let mut arr: Foo<[f32; 1]> = Foo([6.0]); + (arr.0)[0] %= 5.0; + d %= 9.0 + (arr.0)[0]; + let mut arr: Bar<[f32; 1]> = Bar { x: [11.0] }; + arr.x[0] %= 5.0; + d %= 9.0 + arr.x[0]; + + d +} + +const fn sub_assign(W(a): W) -> f32 { + // Mutables: + let mut d: f32 = a; + d -= 1.0; + + // Array projection + let mut arr: [f32; 1] = [2.0]; + arr[0] -= 1.0; + d -= arr[0]; + + // Field projection: + let mut foo: Foo<f32> = Foo(2.0); + let mut bar: Bar<f32> = Bar { x: 2.0 }; + foo.0 -= 1.0; + bar.x -= 1.0; + d -= foo.0 + bar.x; + + // Array + Field projection: + let mut arr: [Foo<f32>; 1] = [Foo(2.0)]; + arr[0].0 -= 1.0; + d -= arr[0].0; + let mut arr: [Bar<f32>; 1] = [Bar { x: 2.0 }]; + arr[0].x -= 1.0; + d -= arr[0].x; + + // Field + Array projection: + let mut arr: Foo<[f32; 1]> = Foo([2.0]); + (arr.0)[0] -= 1.0; + d -= (arr.0)[0]; + let mut arr: Bar<[f32; 1]> = Bar { x: [2.0] }; + arr.x[0] -= 1.0; + d -= arr.x[0]; + + d +} + +macro_rules! test { + ($c:ident, $e:expr, $r:expr) => { + const $c: f32 = $e; + assert_eq!($c, $r); + assert_eq!($e, $r); + } +} + +fn main() { + test!(BASICS, basics((2.0,)), 13.0); + test!(ADD, add_assign(W(1.0)), 10.0); + test!(MUL, mul_assign(A { a: 0.0 }), 256.0); + test!(DIV, div_assign([1.0]), 4.0); + test!(REM, rem_assign(W(5.0)), 5.0); + test!(SUB, sub_assign(W(8.0)), 0.0); +} |