47 Commits

Author SHA1 Message Date
lntue
8741412bdf
[libc][math] Implement a fast pass for atan2f128 with 1ULP error using DyadicFloat<128>. (#133150)
Part of https://github.com/llvm/llvm-project/issues/131642.
2025-04-01 10:57:32 -04:00
Tejas Vipin
8078665bca
[libc][math][c23] Add hypotf16 function (#131991)
Implement hypot for Float16 along with tests.
2025-03-31 10:06:28 -04:00
Tejas Vipin
d22e35be17
[libc][math][c23] Add asinhf16 function (#131351)
Implement asinh for Float16 along with tests. Closes #131001
2025-03-29 13:54:52 +01:00
Harrison Hao
445837a363
[libc][math][c23] Add fmaf16 C23 math function. (#130757)
Implementation of fmaf16 function for 16-bit inputs.
2025-03-23 10:48:56 +08:00
Harrison Hao
ee3e17d67f
[libc][math][c23] Add acoshf16 C23 math function. (#130588)
Implementation of acoshf16 function for 16-bit inputs.
2025-03-22 22:08:34 -04:00
lntue
a17b03f0e4
[libc][math] Implement fast pass for double precision atan function. (#132333)
Implement fast pass for double precision `atan` using range reduction
modulo 1/64 and degree-9 Taylor polynomial.
Relative error is bounded by 2^-66.
2025-03-21 14:12:06 -04:00
Prashanth
7063419460
[libc][docs] Add dirent implementation status doc and include in CMakeLists (#132151)
These changes tracks `dirent.h` for the implementation status of
functions and macros, with respect to the issue (
https://github.com/llvm/llvm-project/issues/122006 ).
2025-03-20 11:08:44 -04:00
Prashanth
592a3ba125
[libc][docs] Add sys/utsname header and documentation for uname function (#131817)
These changes tracks `utsname.h` for the implementation status of
functions and macros, with respect to the issue (
https://github.com/llvm/llvm-project/issues/122006 ).
2025-03-18 16:22:01 -04:00
Prashanth
47f7daab06
[libc][docs] Add glob implementation status doc and include in CMakeLists (#126923)
These changes tracks `glob.h` for the implementation status of functions
and macros, with respect to the issue ( #122006 ) .

cc @nickdesaulniers
2025-03-17 13:05:50 -04:00
PiJoules
313e2ef93e
[libc] Mark fixed point type generic macros as complete (#130805)
These were added in https://github.com/llvm/llvm-project/pull/129371.
2025-03-11 11:03:51 -07:00
Aiden Grossman
eac734aab6
[libc][docs] Fix libc docs build post #129138 (#130184)
The docs build action was failing with libc due to checks.rst not
existing in the expected path. This patch adjusts the path to the actual
path which seems to make everything happy. It seems like this did not
show up before as stdfix.rst was not included in a place that actually
caused it to get picked up by sphinx.
2025-03-06 14:07:44 -08:00
PiJoules
1a09adae9f
[libc] Add link to stdfix.h on headers page (#129138)
Co-authored-by: Petr Hosek <phosek@google.com>
2025-03-06 10:31:26 -08:00
PiJoules
7842954b9d
[stdfix] Update function names (#129129)
The remaining math functions are `mulifx` (int * fx = int), `divifx`
(int / fx = int), `fxdivi` (int / int = fx), and `idivfx` (fx / fx =
int).
2025-02-27 13:51:37 -08:00
PiJoules
9a32af25b4
[stdfix] Check fxbits as complete (#129107)
These were added in https://github.com/llvm/llvm-project/pull/114912 by
@smallp-o-p.
2025-02-27 12:04:06 -08:00
Krishna Pandey
f6bfa33cdb
[libc][stdfix] Implement fixed point bitsfx functions in llvm libc (#128413)
Fixes #113359

---------

Signed-off-by: krishna2803 <kpandey81930@gmail.com>
2025-02-27 13:05:27 -05:00
wldfngrs
3e284554a8
[libc][math][c23] Add acosf16() function (#127731)
- Implementation of acosf16 (inverse cosine) function for 16-bit inputs.
- Exhaustive tests across the 16-bit input range.
2025-02-23 19:46:46 +01:00
Krishna Pandey
1f51038036
[libc][stdfix] Implement countlsfx functions in libc. (#126597)
fixes #113357

---------

Signed-off-by: krishna2803 <kpandey81930@gmail.com>
2025-02-12 14:12:44 -05:00
Prashanth
6a8439b593
[libc][docs] Add sys/statvfs to documentation and YAML definitions (#126413)
These changes ensure that the sys/statvfs header is documented properly
with respect to the issue (
https://github.com/llvm/llvm-project/issues/122006 ) .
2025-02-10 08:58:46 -08:00
wldfngrs
7ee56b9afc
[libc][math][c23] Add asinf16() function (#124212)
Co-authored-by: OverMighty <its.overmighty@gmail.com>
2025-02-10 12:38:55 +01:00
Joseph Huber
7623d91784 Revert "[libc][stdfix] Fix buildbot failure because of a typo. (#126291)"
This reverts commit bada9220b87e73c0f4a498b82f883e17eda928d1.

Revert "[libc][stdfix] Implement fixed point `countlsfx` functions in llvm-libc (#125356)"

This reverts commit f2a1103b323492160d7d27a1575fbda709b49036.
2025-02-07 14:34:40 -06:00
Krishna Pandey
f2a1103b32
[libc][stdfix] Implement fixed point countlsfx functions in llvm-libc (#125356)
fixes #113357
2025-02-07 13:53:17 -05:00
c8ef
6807164500
[libc] Add the <endian.h> header. (#125168)
Closes [#124631](https://github.com/llvm/llvm-project/issues/124631).
ref:
https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/endian.h.html

This patch adds the implementation of `endian.h`, which includes the
header itself and three related macros. These macros in the header rely
on the compiler preprocessor, similar to how
https://github.com/llvm/llvm-project/blob/main/libc/src/__support/endian_internal.h
does. Hopefully this will meet the requirements for compiling llvm with
llvm-libc.
2025-02-07 09:20:18 +08:00
siya100
d398c0c97a
[libc][cpio] Add cpio.h header. (#123798)
[libc][docs] add cpio to documentation and include related functi… 
These changes ensure that the cpio header is documented properly
with respect to the issue
(https://github.com/llvm/llvm-project/issues/122006 ).

**Changes:**
1. **cpio.yaml**: Created a new YAML file for cpio with functions
and related macros.
2. **CMakeLists.txt**: Added cpio to the documentation
directories.
3. **index.rst**: Included `cpio` in the documentation index.

---------

Co-authored-by: siya <siya@Siya.com>
2025-01-24 12:32:51 -08:00
Prashanth
24b1373650
[libc][docs] Add Unistd header's page to the status of implementations doc (#123068)
These changes ensure that the unistd header is documented properly with
respect to the issue ( https://github.com/llvm/llvm-project/issues/122006 ) .
2025-01-23 11:30:01 -08:00
Nick Desaulniers
ddb8607fe8
[libc][docs] disable pthreads docs (#123824)
Having a target named pthreads is breaking when multiple runtimes are enabled.
Disable this target for now so that the builds go back to green (and sites get
updated).

Link: https://github.com/llvm/llvm-zorg/issues/359#issuecomment-2600285688
Link: #122006
Link: #122497
Link: #123821
2025-01-22 09:33:53 -08:00
Prashanth
f12e0c9c3a
[libc][docs] Add sys/stat page to the status of implementations docs (#122997)
These changes ensure that the sys/stat header is documented properly
with respect to the issue ( #122006 ) .
2025-01-17 10:19:22 -08:00
Prashanth
d54d8d7e5a
[libc][docs] Add termios page to the status of implementations docs (#123004)
These changes ensure that the termios header is documented properly with
respect to the issue ( https://github.com/llvm/llvm-project/issues/122006 ) .
2025-01-17 08:59:49 -08:00
Prashanth
9f627cf540
[libc][docs] Add sys/time page to the status of implementations docs (#123000)
These changes ensure that the sys/time header is documented properly
with respect to the issue ( #122006 ) .
2025-01-17 08:38:03 -08:00
Prashanth
fadb0e9b52
[libc][docs] add sys/wait to documentation and include related functi… (#122598)
These changes ensure that the `sys/wait` header is documented properly
with respect to the issue (#122006 ).

**Changes:**
1. **wait.yaml**: Created a new YAML file for `sys/wait` with functions
(`wait`, `waitid`, `waitpid`) and related macros.
2. **CMakeLists.txt**: Added `sys/wait` to the documentation
directories.
3. **index.rst**: Included `sys/wait` in the documentation index.
2025-01-15 15:45:16 -08:00
Nick Desaulniers
539b15b41a
[libc][docs] stub out pthread.h support (#122497)
Link: #122006
2025-01-14 08:48:38 -08:00
Prashanth
c2771ca284
[libc][docs] Add sys/resource header's implementation status (#122563)
### Add sys/resource header's implementation status ( #122006 )

#### Changes:
1. **CMakeLists.txt**: Added `sys/resource` to the list of documentation
directories.
2. **index.rst**: Included `sys/resource` in the documentation index.
3. **resource.yaml**: Created a new YAML file for `sys/resource` with
functions and macros which manages system resources.

This PR adds documentation support for the `sys/resource` header,
including functions and macros as per the latest POSIX standards.
2025-01-14 08:44:46 -08:00
wldfngrs
ecf4f95c4f
[libc][math][c23] Add tanf16 function (#121018)
- Implementation of tan for 16-bit floating point inputs.
- Exhaustive tests across the 16-bit input range
2025-01-12 23:46:53 -05:00
Prashanth
0afee850de
[libc][docs] Add net/if.h documentation by referring to POSIX standards (#122406)
This pull request introduces the following changes to the project with
reference to issue ( #122006 ):

1. **Documentation Update**:
- Added a new YAML file `if.yaml` under `net` to document network
interface functions and macros.
   - The `if.yaml` file includes the following functions and macros:
     - Functions:
       - `if_freenameindex`
       - `if_indextoname`
       - `if_nameindex`
       - `if_nametoindex`
     - Macros:
       - `IF_NAMESIZE`

2. **CMake Configuration Update**:
- Updated the `CMakeLists.txt` file to create the necessary directory
for the `net` headers.
- Included the `net/if` documentation in the Sphinx build configuration.

3. **Index Update**:
- Updated the `index.rst` file to include a reference to the newly added
`net/if` documentation.

**Purpose**:
- This pull request adds documentation for network interface functions
and macros, ensuring they are included in the project's documentation.
- Updates the CMake configuration to support the new documentation.

**Testing**:
- Verified that the new YAML file is correctly referenced in the
`index.rst`.
- Ensured that the documentation builds without errors and includes the
new network interface documentation.

Co-authored-by: Nick Desaulniers <ndesaulniers@google.com>
2025-01-10 09:27:40 -08:00
Prashanth
dff7ef2353
[libc][docs] Add netinet/in header documentation by referring to POSIX standards (#122411)
This pull request introduces the following changes to the project with
reference to ( #122006 ):

1. **Documentation Update**:
- Added a new YAML file `in.yaml` to document network protocol and
address macros.
   - The `in.yaml` file includes the following macros:
     - `IPPROTO_IP`
     - `IPPROTO_IPV6`
     - `IPPROTO_ICMP`
     - `IPPROTO_RAW`
     - `IPPROTO_TCP`
     - `IPPROTO_UDP`
     - `INADDR_ANY`
     - `INADDR_BROADCAST`
     - `INET_ADDRSTRLEN`
     - `IPV6_JOIN_GROUP`
     - `IPV6_LEAVE_GROUP`
     - `IPV6_MULTICAST_HOPS`
     - `IPV6_MULTICAST_IF`
     - `IPV6_MULTICAST_LOOP`
     - `IPV6_UNICAST_HOPS`
     - `IPV6_V6ONLY`
     - `IN6_IS_ADDR_UNSPECIFIED`
     - `IN6_IS_ADDR_LOOPBACK`
     - `IN6_IS_ADDR_MULTICAST`
     - `IN6_IS_ADDR_LINKLOCAL`
     - `IN6_IS_ADDR_SITELOCAL`
     - `IN6_IS_ADDR_V4MAPPED`
     - `IN6_IS_ADDR_V4COMPAT`
     - `IN6_IS_ADDR_MC_NODELOCAL`
     - `IN6_IS_ADDR_MC_LINKLOCAL`
     - `IN6_IS_ADDR_MC_SITELOCAL`
     - `IN6_IS_ADDR_MC_ORGLOCAL`
     - `IN6_IS_ADDR_MC_GLOBAL`

_I believe, all these macros are necessary and should be documented._

2. **CMake Configuration Update**:
- Updated the `CMakeLists.txt` file to create the necessary directory
for the `netinet` headers.
- Included the `netinet/in` documentation in the Sphinx build
configuration.

3. **Index Update**:
- Updated the `index.rst` file to include a reference to the newly added
`netinet/in` documentation.

**Purpose**:
- This pull request adds documentation for network protocol and address
macros in the `netinet/in` header.
- Updates the CMake configuration to support the new documentation.

**Testing**:
- Verified that the new YAML file is correctly referenced in the
`index.rst`.
- Ensured that the documentation builds without errors and includes the
new network interface documentation.

This pull request ensures that the `netinet/in` header macros are
documented and included in the project's documentation, and updates the
CMake configuration to support these changes.
2025-01-10 09:24:02 -08:00
Prashanth
20f0290af0
[docs][libc] Add AIO documentation refering POSIX and include in build (#122219)
With reference to #122006 , add a new header reference (aio.yaml) to doc
2025-01-10 09:23:42 -08:00
Nick Desaulniers
98b3191a34
[libc][docgen] regen docgen via cmake (#119628)
Now, `ninja docs-libc-html` will re-run docgen.

Previously, we would run docgen offline, and commit the result.

Now we no longer need to do that; docgen is invoked from the
dependencies of the `docs-libc-html` target on demand. This
commit removes the dynamically generated .rst files (keeping
the static ones that haven't been converted to docgen), and
fixes up some mistakes I failed to cleanup recently since I
didn't have such automation in place to catch such bugs.
2025-01-06 08:52:08 -08:00
Nick Desaulniers
d2413d4413
[libc][docs] convert stdio.h to docgen (#120334)
Add info from n3220 and POSIX.1-2024.
2024-12-18 09:05:55 -08:00
Shourya Goel
c98e79d856
[libc][complex] Implement different flavors of the cproj function (#119722)
Refer section 7.3.9.5 of ISO/IEC 9899:2023
2024-12-18 02:04:50 +05:30
wldfngrs
6a865b6d3d
[libc][math][c23] Add cosf16 function (#118785) 2024-12-15 18:58:54 +01:00
Nick Desaulniers
c047a5b3f6
[libc][docgen] simplify posix links (#119595)
Usually posix functions have individual doc pages, and each header has its own
list of required macro definitions. Use a simpler key of "in-latest-posix" to
signal that the URL convention can be followed.

Add support for a "removed-in-posix-2008" key which will link to the 2004 docs
for functions like bcmp, bcopy, bzero, index, and rindex from strings.h.

I don't want to add all of these links for pthreads.h, so automating this will
make documenting these go much faster.
2024-12-12 10:49:55 -08:00
Nick Desaulniers
e17d2b585b
[libc][docgen] support non-top-level headers (#119621)
such as arpa/inet, sys/*
2024-12-12 09:21:04 -08:00
Nick Desaulniers
02e39a13c3
[libc][docs] split "String Functions" into string.h, strings.h, stdlib.h, and inttypes.h (#118860)
bcmp, bcopy, and bzero should be moved from libc/src/string/ to
lib/src/strings/ in order for docgen to use existing conventions to find
whether we implement a function or not.

We should add support to docgen for mentioning glibc extensions (mempcpy) or
extensions from other libcs.
2024-12-10 12:59:46 -08:00
Shourya Goel
78c2b6d483
[libc][complex] Implement different flavors of the conj function (#118671)
Refer section 7.3.9.4 of ISO/IEC 9899:2023
2024-12-10 10:05:11 +05:30
Nick Desaulniers
429f0f1e1c
[libc][docs] add missing c99 docs (#119239)
Looks like we were missing docs for:
- float.h
- wchar.h
- wctype.h

Which AFAICT were added in ISO C99.
2024-12-09 14:02:08 -08:00
Nick Desaulniers
a4e2927ab6
[libc][docs] add c11 threads and uchar (#119250)
FWICT, these were the newly added headers for c11.
2024-12-09 12:35:44 -08:00
Nick Desaulniers
7329086d4e
[libc][docs] stub out assert, errno, and locale (#118852)
[libc][docs] stub out assert, errno, and locale

These were the remaining c89 library headers (besides string.h and
stdlib.h; I
will split strings.rst in a follow up commit).

The macro support detection in docgen doesn't quite work for some of
these
headers. Add the stubs for these headers for now, and fix up docgen
later.

See the "NIST publication":
Link: https://www.open-std.org/jtc1/sc22/wg14/www/projects.html
2024-12-05 14:20:03 -08:00
Nick Desaulniers
a9aff440d9
[libc][docs] reorganize documentation (#118836)
This commit does a few things:
* creates libc/docs/headers/ and moves all user API related headers under it.
* updates paths and docgen
* updates the top level index to put these headers under a new "Implementation
  Status" tab.
* rename some of the files to be foo.rst for foo.h (except strings, which is
  currently a mix of string.h and stdlib.h)
* update the heading of some files to be in the form foo.h.
2024-12-05 13:54:09 -08:00