This allows us to easily use an appropriate integer type when performing
float bitfield operations.
This change also adds a comment about the technically-incorrect 80-bit
extended float mantissa field.
These changes are compatible with clang-format 16 and will be mandatory
when we eventually bump clang-format version. So, since there are no
real downsides, let's commit them now.
This makes it possible to use MakeIndexSequqnce in functions like:
template<typename T, size_t N>
constexpr auto foo(T (&a)[N])
This means AK/StdLibExtraDetails.h must now include AK/Types.h
for size_t, which means AK/Types.h can no longer include
AK/StdLibExtras.h (which arguably it shouldn't do anyways),
which requires rejiggering some things.
(IMHO Types.h shouldn't use AK::Details metaprogramming at all.
FlatPtr doesn't necessarily have to use Conditional<> and ssize_t could
maybe be in its own header or something. But since it's tangential to
this PR, going with the tried and true "lift things that cause the
cycle up to the top" approach.)
The fun pattern of `union { struct { u32 a : 1; u64 b : 7; }; u8 x; }`
produces complete garbage on windows, this commit fixes the two
instances of those that exist in AK.
This commit also makes sure that the generated unions have the correct
size (whereas FloatExtractor<f32> previously did not!) by adding some
nice static_asserts.
These instances were detected by searching for files that include
AK/Concepts.h, but don't match the regex:
\\b(AnyString|Arithmetic|ArrayLike|DerivedFrom|Enum|FallibleFunction|Flo
atingPoint|Fundamental|HashCompatible|Indexable|Integral|IterableContain
er|IteratorFunction|IteratorPairWith|OneOf|OneOfIgnoringCV|SameAs|Signed
|SpecializationOf|Unsigned|VoidFunction)\\b
(Without the linebreaks.)
This regex is pessimistic, so there might be more files that don't
actually use any concepts.
In theory, one might use LibCPP to detect things like this
automatically, but let's do this one step after another.
This patch adds support for 128-bit floating points in FloatExtractor.
This is required to build SerenityOS on MacOS/aarch64. It might break
building for Raspberry Pi.
This patch adds the `USING_AK_GLOBALLY` macro which is enabled by
default, but can be overridden by build flags.
This is a step towards integrating Jakt and AK types.
This is a set of functions that allow you to convert between arbitrary
IEEE 754 floating point types, as long as they can be represented
within 64 bits. Conversion methods between floats and doubles are
provided, as well as a generic `float_to_float()`.
Example usage:
#include <AK/FloatingPoint.h>
double val = 1.234;
auto weird_f16 =
convert_from_native_double<FloatingPointBits<0, 6, 10>>(val);
Signed and unsigned floats are supported, and both NaN and +/-Inf are
handled correctly. Values that do not fit in the target floating point
type are clamped.
