[libc] Remove the redundant header FPUtil/FEnvUtils.h

Remove the redundant header FPUtil/FEnvUtils.h, use FPUtil/FEnvImpl.h header instead.

Reviewed By: sivachandra

Differential Revision: https://

[libc] Remove the redundant header FPUtil/FEnvUtils.h

Remove the redundant header FPUtil/FEnvUtils.h, use FPUtil/FEnvImpl.h header instead.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D120965

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[libc] apply formatting to tests

Apply the formatting rules that were applied to the libc/src directory
to the libc/test directory, as well as the files in libc/utils that are
included by the tests.

[libc] apply formatting to tests

Apply the formatting rules that were applied to the libc/src directory
to the libc/test directory, as well as the files in libc/utils that are
included by the tests. This does not include automated enforcement.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D116127

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[libc] apply new lint rules

This patch applies the lint rules described in the previous patch. There
was also a significant amount of effort put into manually fixing things,
since all of the templat

[libc] apply new lint rules

This patch applies the lint rules described in the previous patch. There
was also a significant amount of effort put into manually fixing things,
since all of the templated functions, or structs defined in /spec, were
not updated and had to be handled manually.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D114302

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[libc] Add more robust compile time architecture detection

We may want to restrict the detected platforms to only `x86_64` and `aarch64`.
There are still custom detection in api.td but I don't think

[libc] Add more robust compile time architecture detection

We may want to restrict the detected platforms to only `x86_64` and `aarch64`.
There are still custom detection in api.td but I don't think we can handle these:
- config/linux/api.td:205
- config/linux/api.td:199

Differential Revision: https://reviews.llvm.org/D112818

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Revert "[libc] Add more robust compile time architecture detection"

This reverts commit a72e2499865b55cb007b63673100c06cc85faf97.

[libc] Add more robust compile time architecture detection

We may want to restrict the detected platforms to only `x86_64` and `aarch64`.
There are still custom detection in api.td but I don't think

[libc] Add more robust compile time architecture detection

We may want to restrict the detected platforms to only `x86_64` and `aarch64`.
There are still custom detection in api.td but I don't think we can handle these:
- config/linux/api.td:205
- config/linux/api.td:199

Differential Revision: https://reviews.llvm.org/D112818

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[libc][NFC] Move test related pieces from FPUtil to util/UnitTest.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D112673

[libc] Skip fenv exception tests on aarch64 if HW doesn't support exceptions.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D109538

[libc][nfc] move ctype_utils and FPUtils to __support

Some ctype functions are called from other libc functions (e.g. isspace
is used in atoi). By moving ctype_utils.h to __support it becomes easier

[libc][nfc] move ctype_utils and FPUtils to __support

Some ctype functions are called from other libc functions (e.g. isspace
is used in atoi). By moving ctype_utils.h to __support it becomes easier
to include just the implementations of these functions. For these
reasons the implementation for isspace was moved into
ctype_utils as well.

FPUtils was moved to simplify the build order, and to clarify which
files are a part of the actual libc.

Many files were modified to accomodate these changes, mostly changing
the #include paths.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D107600

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[libc] Move FPExceptMatcher out of TestHelpers.h

TestHelpers.h pulls few pieces from LLVM libc's unittest framework
which aren't available on platforms like Fuchsia which use their own
unittest fram

[libc] Move FPExceptMatcher out of TestHelpers.h

TestHelpers.h pulls few pieces from LLVM libc's unittest framework
which aren't available on platforms like Fuchsia which use their own
unittest framework. So, by moving FPExceptMatcher to a different file
we can exclude LLVM libc specific pieces in a cleaner way.

In a later pass, it might make more sense to rename TestHelpers.h also
to FPMatcher.h. That way, we can make macros like EXPECT_FP_EQ to be
equivalent to EXPECT_EQ on platforms like Fuchsia.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D107129

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[libc] Accommodate Fuchsia's death test framework in fenv tests.

Fuchsia's death test framework runs the closure which can die in a
different thread. Hence, the FP exceptions which cause the closure

[libc] Accommodate Fuchsia's death test framework in fenv tests.

Fuchsia's death test framework runs the closure which can die in a
different thread. Hence, the FP exceptions which cause the closure to
die should be enalbed in the closure.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D106683

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[libc] Rename FEnv.h and refactor subsequent files

Because Windows's pathnames are not case sensitive,
to avoid include conflicts between our header file FEnv.h and the
one from the C Standard libra

[libc] Rename FEnv.h and refactor subsequent files

Because Windows's pathnames are not case sensitive,
to avoid include conflicts between our header file FEnv.h and the
one from the C Standard library, <fenv.h>, the prior file was renamed.
The motive for the relabel came to fix this include error in
TestHelpers.cpp since a conflict arose with a file in the same
directory when #include <fenv.h> was being used.

Reviewed By: sivachandra, aeubanks

Differential Revision: https://reviews.llvm.org/D106470

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[libc][NFC] Adjust enabled_exceptions_test wrt FE_INEXACT.

Since exceptions like FE_DIVBYZERO can raise FE_INEXACT, we need to
ensure that we don't raise FE_DIVBYZERO (or others which can also raise

[libc][NFC] Adjust enabled_exceptions_test wrt FE_INEXACT.

Since exceptions like FE_DIVBYZERO can raise FE_INEXACT, we need to
ensure that we don't raise FE_DIVBYZERO (or others which can also raise
FE_INEXACT) when FE_INEXACT is enabled.

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[libc] Add a new test matcher for tests raising floating point exceptions.

This new matcher does not use death tests to check if SIGFPE is raised.
Instead, that a SIGFPE was raised is checked using

[libc] Add a new test matcher for tests raising floating point exceptions.

This new matcher does not use death tests to check if SIGFPE is raised.
Instead, that a SIGFPE was raised is checked using a SIGFPE signal handler.

Reviewed By: mcgrathr

Differential Revision: https://reviews.llvm.org/D106086

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[libc][NFC] Add a death test API adaptation macro

Fuchsia's zxtest has a slightly different death test definition, and
this macro makes our death test API work on Fuchsia.

Reviewed By: sivachandra

[libc][NFC] Add a death test API adaptation macro

Fuchsia's zxtest has a slightly different death test definition, and
this macro makes our death test API work on Fuchsia.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D95648

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[libc] Small adjustments to fenv tests

Some libcs define non-standard FE_* macros and include them in
FE_ALL_EXCEPT. This change adjusts the fenv tests so that the
non-standard FE_* macros do not in

[libc] Small adjustments to fenv tests

Some libcs define non-standard FE_* macros and include them in
FE_ALL_EXCEPT. This change adjusts the fenv tests so that the
non-standard FE_* macros do not interfere when compiled with
fenv.h from another libc.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D95650

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[libc][NFC] add "LlvmLibc" as a prefix to all test names

Summary:
Having a consistent prefix makes selecting all of the llvm libc tests
easier on any platform that is also using the gtest framework.

[libc][NFC] add "LlvmLibc" as a prefix to all test names

Summary:
Having a consistent prefix makes selecting all of the llvm libc tests
easier on any platform that is also using the gtest framework.
This also modifies the TEST and TEST_F macros to enforce this change
moving forward.

Reviewers: sivachandra

Subscribers:

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[libc] Raise x87 exceptions by synchronizing with "fwait".

Couple of helper functions enableExcept and disableExcept have been
added. In a later round, they will be used to implemented the GNU
exten

[libc] Raise x87 exceptions by synchronizing with "fwait".

Couple of helper functions enableExcept and disableExcept have been
added. In a later round, they will be used to implemented the GNU
extension functions feenableexcept and fedisableexcept.

Differential Revision: https://reviews.llvm.org/D92821

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