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std: Standardize (input, output) param orderings

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This functions swaps the order of arguments to a few functions that previously
took (output, input) parameters, but now take (input, output) parameters (in
that order).

The affected functions are:

* ptr::copy
* ptr::copy_nonoverlapping
* slice::bytes::copy_memory
* intrinsics::copy
* intrinsics::copy_nonoverlapping

Closes #22890
[breaking-change]
This commit is contained in:
Alex Crichton
2015-03-27 11:12:28 -07:00
parent 14192d6df5
commit acd48a2b3e
29 changed files with 147 additions and 107 deletions
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9
src/libcoretest/ptr.rs
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@@ -35,18 +35,15 @@ fn test() {
let v0 = vec![32000u16, 32001u16, 32002u16];
let mut v1 = vec![0u16, 0u16, 0u16];
copy(v1.as_mut_ptr().offset(1),
v0.as_ptr().offset(1), 1);
copy(v0.as_ptr().offset(1), v1.as_mut_ptr().offset(1), 1);
assert!((v1[0] == 0u16 &&
v1[1] == 32001u16 &&
v1[2] == 0u16));
copy(v1.as_mut_ptr(),
v0.as_ptr().offset(2), 1);
copy(v0.as_ptr().offset(2), v1.as_mut_ptr(), 1);
assert!((v1[0] == 32002u16 &&
v1[1] == 32001u16 &&
v1[2] == 0u16));
copy(v1.as_mut_ptr().offset(2),
v0.as_ptr(), 1);
copy(v0.as_ptr(), v1.as_mut_ptr().offset(2), 1);
assert!((v1[0] == 32002u16 &&
v1[1] == 32001u16 &&
v1[2] == 32000u16));