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Make overflowing and wrapping negation const #58044

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Merged
merged 6 commits into from
Feb 20, 2019
Merged

Make overflowing and wrapping negation const #58044

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2f5d245
Make overflowing and wrapping negation const
Lokathor Feb 1, 2019
26a3540
Don't know why I wasn't using `self` properly there
Lokathor Feb 1, 2019
481b354
Simplify the overflowing_neg expression
Lokathor Feb 2, 2019
5256efb
const-int-overflowing.rs += overflowing_neg
Lokathor Feb 2, 2019
31bf7e1
const-int-wrapping.rs += wrapping_neg
Lokathor Feb 2, 2019
e06302f
fix the build errors
Lokathor Feb 2, 2019
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const-int-wrapping.rs += wrapping_neg
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@Lokathor
Lokathor committed Feb 2, 2019
commit 31bf7e1b51ebb932036dd632396cd98c1e115a6b
7 changes: 5 additions & 2 deletions src/test/run-pass/const-int-wrapping.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,9 @@ const SHL_B: u32 = 1u32.wrapping_shl(128);
const SHR_A: u32 = 128u32.wrapping_shr(7);
const SHR_B: u32 = 128u32.wrapping_shr(128);

const NEG_A: u32 = 5u32.wrapping_neg();
const NEG_B: u32 = 1234567890u32.wrapping_neg();

fn ident<T>(ident: T) -> T {
ident
}
Expand All @@ -30,6 +33,6 @@ fn main() {
assert_eq!(SHL_A, ident(128));
assert_eq!(SHL_B, ident(1));

assert_eq!(SHR_A, ident(1));
assert_eq!(SHR_B, ident(128));
assert_eq!(SHR_A, ident(4294967291));
assert_eq!(SHR_B, ident(3060399406));
}