errors as reported on macOS w/ Xcode 10.1, 10.2 and 11.0:
src/ir.cpp:23285:16: error: variable 'bits' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
} else if (float_type->id == ZigTypeIdFloat)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/ir.cpp:23288:13: note: uninitialized use occurs here
switch (bits) {
^~~~
src/ir.cpp:23285:12: note: remove the 'if' if its condition is always true
} else if (float_type->id == ZigTypeIdFloat)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/ir.cpp:23281:18: note: initialize the variable 'bits' to silence this warning
unsigned bits;
and expand @sqrt
This revealed that the accuracy of ln is not as good as the current algorithm in
musl and glibc, and should be ported again.
v2: actually include tests
v3: fix reversal of in and out arguments on f128M_sqrt()
add test for @sqrt on comptime_float
do not include @nearbyInt() until it works on all targets.
Not all of the softfloat library is being built....
Vector support is very buggy at the moment, but should work when the bugs are fixed.
(as I had the same code working with another vector function, that hasn't been merged yet).
This reverts commit aa60d2a688c965dcccf8e2c42afe5c180daba8fc.
The copyright ownership of this 10 line patch is under dispute.
See #2701 for details. So I'll revert it and then fix it myself without
looking at this patch.
because of this example:
```zig
export fn entry(b: bool) usize {
var runtime = [1]i32{3};
comptime var i: usize = 0;
inline while (i < 2) : (i += 1) {
const result = if (i == 0) [1]i32{2} else runtime;
}
comptime {
return i;
}
}
```
The problem is that the concept of "resetting" a result location,
introduced in the previous commit, cannot handle elision scopes.
This concept is inherently broken with inline loops.
