This class helps in dealing with normal and subnormal numbers uniformly.
Moreover, since this class has been designed to handle all floating
formats across platforms, it helps implement floating point functions in
a uniform manner.
The implementations of frexp and logb have been switched to use this new
class as it allows us to use just one implementation across all
different floating point formats.
Reviewed By: lntue
Differential Revision: https://reviews.llvm.org/D86241
This eliminates UnitTest's dependency on FPUtil and hence prevents
non-math tests from depending indirectly on FPUtil. The patch
essentially moves some of the existing pieces into a library of its own.
Along the way, renamed add_math_unittest to add_fp_unittest.
Reviewed By: lntue
Differential Revision: https://reviews.llvm.org/D85486
This tool will be used to generate C wrappers for the C++ LLVM libc
implementations. This change does not hook this tool up to anything yet.
However, it can be useful for cases where one does not want to run the
objcopy step (to insert the C symbol in the object file) but can make use
of LTO to eliminate the cost of the additional wrapper call. This can be
relevant for certain downstream platforms. If this tool can benefit other
libc platforms in general, then it can be integrated into the build system
with options to use or not use the wrappers. An example of such a
platform is CUDA.
Reviewed By: abrachet
Differential Revision: https://reviews.llvm.org/D84848
This class is currently used by two tools: HdrGen and PrototypeTestGen.
We will be adding more tools based on this class so it is convenient to
keep it in a util library of its own.
Summary: Update Test (EXPECT_EQ and friends) to accept __uint128_t and floating point types (float, double, long double).
Reviewers: sivachandra
Subscribers: mgorny, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D83931
Added IsSameV as a convenience variable and used it where convenient.
Reviewers: abrachet, lntue
Differential Revision: https://reviews.llvm.org/D83980
Current implementations of single precision and double precision
floating point operations operate on bits of the integer type of
same size. The code made use of magic masks which were listed as
literal integer values. This is not possible in the case of long
double type as the mantissa of quad-precision long double type used
on non-x86 architectures is wider that the widest integer type for
which we can list literal values. So, in this patch, to avoid
using magic masks specified with literal values, we use packed
bit-field struct types and let the compiler generate the masks.
This new scheme allows us to implement long double flavors of the
various floating point operations. To keep the size of the patch
small, only the implementations of fabs and trunc have been
switched to the new scheme. In following patches, all exisiting
implementations will be switched to the new scheme.
Reviewers: asteinhauser
Differential Revision: https://reviews.llvm.org/D82036
Summary:
To get the target order correct, the benchmarks directory has been moved
one level higher. Previously, it was living in the utils directory. The
utils directory is a collection of utils which are to be used by the
tests and implementations. However, benchmarks *use* the
implementations. So, moving it out of utils helps us setup proper
target level dependencies.
Reviewers: gchatelet
Differential Revision: https://reviews.llvm.org/D81910
Siva Chandra Reddy
Tue Ly
cgyurgyik
Chris Gyurgyik