Commit Graph

133 Commits

Author SHA1 Message Date
Siva Chandra Reddy cc07d52511 [libc][NFC] Use ASSERT_FP_EQ to compare nan values in tests.
This change "fixes" one of the uses that was missed in
0524da67b4.
2020-12-30 13:06:40 -08:00
Siva Chandra Reddy ff6fd38552 [libc] Add implementations of rounding functions which depend rounding mode.
Namely, implementations for rint, rintf, rintl, lrint, lrintf, lrintl,
llrint, llrintf and llrintl have been added.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D93889
2020-12-29 22:22:02 -08:00
Siva Chandra Reddy d599ed49b3 [libc][NFC] Use ASSERT_FP_EQ to comapre NaN values in tests.
This is a continuation of the previous CL which did a similar change in
other tests. To elaborate a little about why we need this - under C++
compilation with headers not from LLVM libc, libraries like libc++ and
libstdc++ provide their own math.h which undefine macros like `isnan`
and provide the overloaded C++ isnan functions which return a boolean
value instead of an integer value returned by the isnan macro.
2020-12-17 23:16:26 -08:00
Siva Chandra Reddy e1a5b234ef [libc][Obvious] Fix typo is wrappergen unittest. 2020-12-17 09:13:23 -08:00
Siva Chandra Reddy bf03eba1f9 [libc] Refactor WrapperGen to make the flow cleaner.
Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D93417
2020-12-17 08:56:45 -08:00
Siva Chandra Reddy 0524da67b4 [libc][NFC] Use ASSERT_FP_EQ to comapre NaN values in tests. 2020-12-15 23:48:54 -08:00
Siva Chandra Reddy f66cf13d5d [libc][NFC] Rename global `nan` in tests to `aNaN`.
The name `nan` conflicts with the function `nan` defined declared in
math.h.
2020-12-15 22:37:02 -08:00
Siva Chandra Reddy cee1e7d14f [libc][NFC][Obvious] Remove few unnecessary #include directives in tests. 2020-12-15 21:41:44 -08:00
Siva Chandra b1067a9b3c [libc][NFC] Skip adding dummy targets for skipped unit tests. 2020-12-14 17:52:47 -08:00
Cheng Wang af68c3b892 [libc] Add memcmp implementation.
Reviewed By: gchatelet

Differential Revision: https://reviews.llvm.org/D93009
2020-12-15 09:47:29 +08:00
Siva Chandra Reddy 9ab6c1a99f [libc] Let wrappergen pick LLVM libc mangled name from aliasee file.
Along the way, made a change to run tool unittests when the target
"check-libc" is run by introducing a libc testsuite for tool unittests.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D93142
2020-12-11 14:33:03 -08:00
Siva Chandra Reddy 7aeb3804c4 [libc] Add implementations of lround[f|l] and llround[f|l].
A new function to MPFRWrapper has been added, which is used to set up
the unit tests.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D93007
2020-12-11 11:12:40 -08:00
Cheng Wang 1fd32dcb29 [libc] Add [l|ll]abs implementation.
Implement abs, labs and llabs with template.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D92626
2020-12-11 09:25:20 +08:00
Siva Chandra Reddy ab3cbe4bc0 [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
2020-12-08 13:16:19 -08:00
Michael Jones e60f2cbd0c [libc] add tests to WrapperGen
This adds an initial test that can serve as a basis for other tests on
wrappergen.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D92137
2020-12-04 18:14:17 +00:00
Siva Chandra Reddy 4fff2a7e89 [libc] Add simple x86_64 floating point exception and rounding mode support.
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D92546
2020-12-03 12:55:12 -08:00
Tue Ly 3b487d51e2 [libc] Add implementation of hypot.
Refactor src/math/hypotf.cpp and test/src/math/hypotf_test.cpp and reuse them for hypot and hypot_test

Differential Revision: https://reviews.llvm.org/D91831
2020-12-03 11:08:20 -05:00
Siva Chandra Reddy 19c3894f94 [libc] Fix couple of corner cases in remquo.
These two cases are fixed:
1. If numerator is not zero and denominator is infinity, then the
numerator is returned as the remainder.
2. If numerator and denominator are equal in magnitude, then quotient
with the right sign is returned.

The differet tests of remquo, remquof and remquol have been unified
into a single file to avoid duplication.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D92353
2020-12-02 11:48:49 -08:00
Cheng Wang 60cef89362 [libc] Add strncpy implementation.
Add libc strncpy implementation.

Reviewed By: sivachandra, gchatelet

Differential Revision: https://reviews.llvm.org/D91399
2020-12-02 20:45:51 +08:00
Raman Tenneti 6f0f844e9a Initial commit of mktime.
This introduces mktime to LLVM libc, based on C99/C2X/Single Unix Spec.

Co-authored-by: Jeff Bailey <jeffbailey@google.com>

This change doesn't handle TIMEZONE,  tm_isdst and leap seconds.  It returns -1 for invalid dates. I have verified the return results for all the possible dates with glibc's mktime.

TODO:
+ Handle leap seconds.
+ Handle out of range time and date values that don't overflow or underflow.
+ Implement the following suggestion Siva - As we start accumulating the seconds, we should be able to check if the next amount of seconds to be added can lead to an overflow. If it does, return the overflow value.  If not keep accumulating. The benefit is that, we don't have to validate every input, and also do not need the special cases for sizeof(time_t) == 4.
+ Handle timezone and update of tm_isdst

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D91551
2020-11-30 21:07:16 -08:00
Guillaume Chatelet 699d17d4d6 [libc] Improve memcpy copy loop
Rewriting loop so the terminating condition does not depend on the loop body

Differential Revision: https://reviews.llvm.org/D91976
2020-11-30 08:24:10 +00:00
Cheng Wang a513be4900 [libc][Obvious] Fix typo in strnlen_test.cpp. 2020-11-27 15:56:19 +08:00
Michael Jones 3e18fb3390 [libc] Switch functions to using global headers
This switches all of the files in src/string, src/math, and
test/src/math from using relative paths (e.g. `#include “include/string.h”`)
to global paths (e.g. `#include <string.h>`) to make bringing up those
functions on other platforms, such as fuchsia, easier.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D91394
2020-11-21 00:07:17 +00:00
Siva Chandra Reddy 4d8dede5e5 [libc] Fix the overflow check condition of ldexp.
Targeted tests have been added.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D91752
2020-11-18 21:35:48 -08:00
Siva Chandra Reddy d1b921e3bf [libc][NFC][Obvious] Remove few unnecessary pieces from ilogb tests. 2020-11-18 11:26:05 -08:00
Siva Chandra Reddy bb8f2585c6 [libc] Add implementations of ldexp[f|l].
The rounding behavior of NormalFloat to float format has been changed
to round to nearest. Also, a bug in NormalFloat to subnormal number
conversion has been fixed.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D91591
2020-11-17 15:05:42 -08:00
Tue Ly d41280467d [libc] Add implementations of fdim[f|l].
Implementing fdim, fdimf, and fdiml for llvm-libc.

Differential Revision: https://reviews.llvm.org/D90906
2020-11-10 18:48:11 -05:00
Siva Chandra Reddy 930cf1cb9f [libc] Add implementations of ilogb[f|l].
Depends on D90805.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D90806
2020-11-05 16:27:44 -08:00
Siva Chandra Reddy 50c2f2b6f0 [libc][NFC][Obvious] Use the new macro to declare special constants in tests. 2020-11-03 15:44:06 -08:00
Siva Chandra Reddy e4be4bcf83 [libc][NFC] Use a convenience macro to declare special floating point constants.
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D90262
2020-10-27 16:55:16 -07:00
Tue Ly f55963d501 [libc] Add implementation for hypotf
Truncating the sum of squares, and then use shift-and-add algorithm to compute its square root.
Required MPFR testing infra is updated in https://reviews.llvm.org/D87514

Differential Revision: https://reviews.llvm.org/D87516
2020-09-17 23:28:36 -04:00
Siva Chandra Reddy ba5b1371ec [libc][NFC] Add spec files as dependencies of integration test. 2020-09-09 10:22:27 -07:00
Siva Chandra Reddy 17ac4543d4 [libc][obvious] Use constants of type double in remquo_test. 2020-09-03 22:26:25 -07:00
Siva Chandra Reddy 8514ecb02d [libc] Add implementations of remquo[f|l] and remainder[f|l].
The implementation is not fully standards compliant in the sense that
errno is not set on error, and floating point exceptions are not raised.

Subnormal range and normal range are tested separately in the tests.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D86666
2020-09-03 22:00:17 -07:00
Tue Ly 5078825aa9 [libc] Add implementations for sqrt, sqrtf, and sqrtl.
Differential Revision: https://reviews.llvm.org/D84726
2020-08-26 09:46:18 -04:00
Siva Chandra Reddy 3f4674a557 [libc] Extend MPFRMatcher to handle multiple-input-multiple-output functions.
Tests for frexp[f|l] now use the new capability. Not all input-output
combinations have been addressed by this change. Support for newer combinations
can be added in future as needed.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D86506
2020-08-25 21:42:49 -07:00
Siva Chandra Reddy ed8982da3e [libc][NFC] Switch math tests to the new ULP based tolerance.
Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D86267
2020-08-20 08:31:31 -07:00
Siva Chandra Reddy e2645488ca [libc][obvious] Fix x86 long double conversion to integer.
Fixes incorrectly constructed ceill tests.
2020-08-19 14:48:55 -07:00
Siva Chandra Reddy f768eb216f [libc][obvious] Fix link order of math tests. 2020-08-18 11:04:58 -07:00
parallels bc45bab7eb [libc] Add strtok_r implementation.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D85779
2020-08-13 15:51:38 -04:00
Siva Chandra a87576592c [libc][obvious] Switch copysign[f|l] and fabs[f|l] to the new test matchers. 2020-08-12 00:20:58 -07:00
Siva Chandra 01b99c6e1d [libc][obvious] Switch nearest integer function tests to the new matchers. 2020-08-11 23:33:15 -07:00
cgyurgyik 667843cc07 [libc] Add strtok implementation.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D85615
2020-08-11 13:44:53 -04:00
Siva Chandra Reddy f6d74b29d6 [libc][NFC] Disable a loader test as ld.gold fails to link.
Will be reenabled after investigating and fixing the problem.
2020-08-07 23:45:18 -07:00
Siva Chandra Reddy db936e0e91 [libc][NFC] Add library of floating point test matchers.
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
2020-08-07 23:34:15 -07:00
Siva Chandra Reddy 5d59385ba6 [libc] Setup TLS in x86_64 loader.
The new code added is still very x86_64 specific. AArch64 support will
be added very soon and refactoring of the loader code will be done as
part of the patches adding it.

Reviewed By: asteinhauser

Differential Revision: https://reviews.llvm.org/D82700
2020-08-07 23:19:03 -07:00
cgyurgyik dc13a9a781 [libc] Add strcpsn and strpbrk implementation.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D85386
2020-08-07 16:14:32 -04:00
cgyurgyik 128bf458ab [libc] Add tolower, toupper implementation.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D85326
2020-08-06 15:21:38 -04:00
cgyurgyik f3b4150255 [libc] Add strspn implementation and std::bitset
Reviewed By: sivachandra, abrachet

Differential Revision: https://reviews.llvm.org/D85103
2020-08-05 16:48:38 -04:00
cgyurgyik 1fdab96130 [libc] Add isspace, isprint, isxdigit implementations.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D85270
2020-08-05 10:51:43 -04:00