Introduce completion test utils #3555
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Mar 11, 2020
3555: Introduce completion test utils r=matklad a=matklad bors r+ 🤖 Co-authored-by: Aleksey Kladov <[email protected]>
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…RalfJung Enable Non-determinism of float operations in Miri and change std tests Links to [rust-lang#4208](rust-lang/miri#4208) and [rust-lang#3555](rust-lang/miri#3555) in Miri. Non-determinism of floating point operations was disabled in rust-lang/rust#137594 because it breaks the tests and doc-tests in core/coretests and std. This PR enables some of them. This pr includes the following changes: - Enables the float non-determinism but with a lower relative error of 4ULP instead of 16ULP - These operations now have a fixed output based on the C23 standard, except the pow operations, this is tracked in [rust-lang#4286](rust-lang/miri#4286 (comment)) - Changes tests that made incorrect assumptions about the operations, not to make that assumption anymore (from `assert_eq!` to `assert_approx_eq!`. - Changed the doctests of the stdlib of these operations to compare against fixed constants instead of `f*::EPSILON`, which now succeed with Miri and `-Zmiri-many-seeds` - Added a constant `APPROX_DELTA` in `std/tests/floats/f32.rs` which is used for approximation tests, but with a different value when run in Miri. This is to make these tests succeed. - Added tests in the float tests of Miri to test the C23 behaviour. Fixes rust-lang/miri#4208
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bors r+
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