Fill in missing parts of Integer overflow API #24420
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bors merged 4 commits intorust-lang:masterfrom Apr 17, 2015
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`wrapping_div`, `wrapping_rem`, `wrapping_neg`, `wrapping_shl`, `wrapping_shr`. All marked unstable under `core` feature for now (with expectation of being marked as stable by 1.0 release).
See discussion, albeit one-sided, in: rust-lang/rfcs#964
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(rust_highfive has picked a reviewer for you, use r? to override) |
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See also my notes at rust-lang/rfcs#964 ... or rather, skim them, because there is a change to |
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This is now ready for review, and it would be nice for it to be in the next beta. |
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r? @aturon |
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⌛ Testing commit 0610ee4 with merge 6c0d434... |
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💔 Test failed - auto-mac-32-opt |
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d'oh; I should have done testing for 32-bit targets as well. Working to address this now. |
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Apr 16, 2015
Add conditional overflow-checking to signed negate operator. I argue this can land independently of #24420 , because one can write the implementation of `wrapped_neg()` inline if necessary (as illustrated in two cases on this PR). This needs to go into beta channel.
(The cast from the 64-bit value to isize was using the lower 32-bits, which led to it being treated as a large positive value rather than a smallish negative one. The fix was to use the same bits for the upper- and lower- 32 bits.)
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Apr 17, 2015
Fill in missing parts of Integer overflow API See todo list at #22020
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Apr 17, 2015
Add conditional overflow-checking to signed negate operator. I argue this can land independently of #24420 , because one can write the implementation of `wrapped_neg()` inline if necessary (as illustrated in two cases on this PR). This needs to go into beta channel.
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Apr 21, 2015
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not accepted for beta. |
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(because it only adds unstable API features) |
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Fill in missing parts of Integer overflow API
See todo list at #22020