lntue 78cc822aa6

[libc][math] Implement double precision acos correctly rounded for all rounding modes. (#138308) ...

We reduce computation of `acos` to `asin` as follow:

When `|x| < 0.5`:
```math
acos(x) = \frac{\pi}{2} - asin(x).
```
For `0.5 <= |x| < 1`, let
```math
u = \frac{1 - \left| x \right|}{2},
```
then
```math
acos(x) = \begin{cases}
  2 \cdot asin \left( \sqrt{u} \right) &, 0.5 \leq x < 1 \\
  \pi - 2 \cdot asin \left( \sqrt{u} \right) &, -1 < x \leq 0.5 
\end{cases}
```

2025-05-08 23:23:09 -04:00

..

__support

[libc] Fix warnings for freelist_heap_test/fuzz (#136634)

2025-04-22 11:11:31 -07:00

arpa

[libc] move src/network to src/arpa/inet (#119273)

2024-12-10 08:59:39 -08:00

assert

[libc] Mass replace enclosing namespace (#67032)

2023-09-26 11:45:04 +02:00

compiler

[libc] Remove LlvmLibcStackChkFail.Smash test (#125919)

2025-02-05 12:34:19 -08:00

complex

[libc] Fix implicit conversion warnings in tests. (#131362)

2025-03-14 14:24:11 -04:00

ctype

[libc] Fix multiply-defined global functions in ctype tests (#119055)

2024-12-09 11:18:00 -08:00

dirent

[libc] Move libc_errno inside of LIBC_NAMESPACE (#80774)

2024-02-06 10:36:05 +01:00

errno

[libc] Rework the GPU build to be a regular target (#81921)

2024-02-22 15:29:29 -06:00

fcntl

[libc] Fix implicit conversion warnings in tests. (#131362)

2025-03-14 14:24:11 -04:00

fenv

[libc] Add osutils for Windows and make libc and its tests build on Windows target (#104676)

2024-09-11 23:41:32 -04:00

inttypes

[libc] Mass replace enclosing namespace (#67032)

2023-09-26 11:45:04 +02:00

locale

[libc] add locale proxy header (#130621)

2025-03-11 08:46:29 +08:00

math

[libc][math] Implement double precision acos correctly rounded for all rounding modes. (#138308)

2025-05-08 23:23:09 -04:00

poll

[libc][POSIX][poll.h] implement poll (#125118)

2025-02-05 13:24:39 -08:00

pthread

[libc] remove errno.h includes (#110934)

2024-10-05 19:31:36 -04:00

sched

[libc] Fix scheduler test incorrectly guessing user privileges (#95562)

2024-06-19 20:16:02 -05:00

search

[libc] lsearch_test.cpp: put helpers in anonymous namespace. (#137964)

2025-04-30 11:55:35 -04:00

setjmp

Reland "[libc] build fix for sigsetjmp (#137047)" (#137214)

2025-04-29 09:28:42 -04:00

signal

[libc][signal] clean up usage of sighandler_t (#125745)

2025-02-07 10:43:56 -08:00

spawn

[libc] remove errno.h includes (#110934)

2024-10-05 19:31:36 -04:00

stdbit

[libc] first_trailing_one(0) should be 0. (#130155)

2025-03-08 00:11:43 +08:00

stdfix

[libc][stdfix] Implement idivfx functions in LLVM libc (#133005)

2025-04-25 07:58:16 -04:00

stdio

[libc] Templatize the scanf Reader interface (#131037)

2025-03-17 23:51:24 -07:00

stdlib

[libc] implement memalignment (#132493)

2025-03-28 16:07:57 -07:00

string

[libc] Fix implicit conversion warnings in tests. (#131362)

2025-03-14 14:24:11 -04:00

strings

[libc] implement strings/str{n}casecmp_l (#130407)

2025-03-12 10:49:04 +08:00

sys

[libc] Implement getitimer and setitimer, add proxy headers for itimerval (#134773)

2025-04-14 13:39:42 -07:00

termios

[libc] Move libc_errno inside of LIBC_NAMESPACE (#80774)

2024-02-06 10:36:05 +01:00

time

[libc][NFC] replace NULL with nullptr (#134464)

2025-04-04 16:55:43 -07:00

unistd

[libc] Migrate unistd tests to use ErrnoCheckingTest. (#132067)

2025-03-19 13:29:52 -07:00

wchar

[libc][wchar] implement wcslen (#124150)

2025-01-23 13:33:04 -08:00

CMakeLists.txt

[libc][POSIX][poll.h] implement poll (#125118)

2025-02-05 13:24:39 -08:00