The difftime function computes the difference between two calendar
times: time1 - time0 as per as per 7.27.2.2 section in
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2478.pdf.
double difftime(time_t time1, time_t time0);
Tested:
Unit tests
Co-authored-by: Jeff Bailey <jeffbailey@google.com>
Reviewed By: jeffbailey
Differential Revision: https://reviews.llvm.org/D136631
This version is more composable and also simpler at the expense of being more explicit and more verbose.
This patch provides rationale for the framework, implementation and unit tests but the functions themselves are still using the previous version. The change in implementation will come in a follow up patch.
Differential Revision: https://reviews.llvm.org/D136292
The name of the libc target changed, this patch updates the cmake for
the string to float comparison test to use the correct name.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D136388
This breaks llvm-libc build bots:
- libc-x86_64-debian-dbg-asan
- libc-x86_64-debian-fullbuild-dbg-asan
Address sanitizers fail with "AddressSanitizer: invalid alignment requested in aligned_alloc: 64, alignment must be a power of two and the requested size 0x41 must be a multiple of alignment (thread T0)"
- libc-aarch64-ubuntu-dbg
- libc-aarch64-ubuntu-fullbuild-dbg
https://lab.llvm.org/buildbot/#/builders/223/builds/8877/steps/7/logs/stdio
- libc-arm32-debian-dbg
https://lab.llvm.org/buildbot/#/builders/229/builds/5201/steps/7/logs/stdio
This reverts commit 903cc71a82431d79e5fb541946a9e7c93750e374.
This version is more composable and also simpler at the expense of being more explicit and more verbose.
This patch provides rationale for the framework, implementation and unit tests but the functions themselves are still using the previous version. The change in implementation will come in a follow up patch.
Differential Revision: https://reviews.llvm.org/D136292
This reverts commit https://reviews.llvm.org/D135134 (b3f1d58a131eb546aaf1ac165c77ccb89c40d758)
That revision appears to have broken Arm memcpy in some subtle
ways. Am communicating with the original author to get a
good reproduction.
This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM platforms.
Codegen can be checked here https://godbolt.org/z/chf1Y6eGM
Differential Revision: https://reviews.llvm.org/D135134
This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM platforms.
Codegen can be checked here https://godbolt.org/z/x19zvE59v
Differential Revision: https://reviews.llvm.org/D135134
This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM platforms.
Codegen can be checked here https://godbolt.org/z/x19zvE59v
Differential Revision: https://reviews.llvm.org/D135134
The implementation currently ignores all spawn attributes. Support for
them will be added in future changes.
A simple allocator for integration tests has been added so that the
integration test for posix_spawn can use the
posix_spawn_file_actions_add* functions.
Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D135752
This version is more composable and also simpler at the expense of being more explicit and more verbose. It also provides minimal implementations for ARM platforms.
Codegen can be checked here https://godbolt.org/z/x19zvE59v
Differential Revision: https://reviews.llvm.org/D135134
This version is more composable and also simpler at the expense of being more explicit and more verbose.
This patch is not meant to be submitted but gives an idea of the change.
Codegen can be checked in https://godbolt.org/z/6z1dEoWbs by removing the "static inline" before individual functions.
Unittests are coming.
Suggested review order:
- utils
- op_base
- op_builtin
- op_generic
- op_x86 / op_aarch64
- *_implementations.h
Differential Revision: https://reviews.llvm.org/D135134
In the isatty test it was assumed that /dev/tty existed, but that's not
always the case. Now we check for that.
Differential Revision: https://reviews.llvm.org/D135626
The isatty function uses the side effects of an ioctl call to determine
if a specific file descriptor is a terminal. I chose TIOCGETD (get line
discipline of terminal) because it didn't require any new structs.
Reviewed By: sivachandra, lntue
Differential Revision: https://reviews.llvm.org/D135618
The sysconf function has many options, this patch adds the basic funtion
and the pagesize option. More options will be added in future patches.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D135409
This patch adds support for converting doubles to string in the %f/F
format specifier. It does not yet support long doubles outside of the
double range. This implementation is based on the work of Ulf Adams,
specifically the Ryu Printf algorithm.
See:
Ulf Adams. 2019. Ryū revisited: printf floating point conversion.
Proc. ACM Program. Lang. 3, OOPSLA, Article 169 (October 2019), 23 pages.
https://doi.org/10.1145/3360595
Differential Revision: https://reviews.llvm.org/D131023
The logic for strsignal and strerror is very similar, so I've moved them
both to use a shared utility (MessageMapper) for the basic
functionality.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D135322
I've implemente the gnu variant of strerror_r since that seems to be the
one more relevant to what we're trying to do.
Differential Revision: https://reviews.llvm.org/D135227
Without this fix, the declaration in sched.h will not have the "__" prefix and
will cause a compile failure.
Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D135286
