Adds an implementation for stpcpy and stpncpy, which are posix extension
functions.
Reviewed By: sivachandra, lntue
Differential Revision: https://reviews.llvm.org/D111913
rename str_conv_utils to str_to_integer to be more
in line with str_to_float.
Reviewed By: sivachandra, lntue
Differential Revision: https://reviews.llvm.org/D113061
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
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
Add the fast path first described by Clinger [1] with additions by Gay [2].
This speeds up conversion by about 10% by handling numbers with fewer digits
more efficiently.
[1] Clinger WD. How to Read Floating Point Numbers Accurately.
SIGPLAN Not 1990 Jun;25(6):92–101. https://doi.org/10.1145/93548.93557.
[2] Gay DM, Correctly rounded binary-decimal and decimal-binary conversions;
1990. AT&T Bell Laboratories Numerical Analysis Manuscript 90-10.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D112580
The idea is to move all pieces related to the actual libc sources to the
"src" directory. This allows downstream users to ship and build just the
"src" directory.
Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D112653
Previously, strtol/ll/ul/ull would return a pointer to the end of its
parsing, regardless of if it detected a number. Now it will return a
length of 0 when it doesn't find a number.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D112176
Add an implementation for memccpy and mempcpy. These functions are
posix extensions for the moment.
Reviewed By: lntue
Differential Revision: https://reviews.llvm.org/D111762
This adds strncat to llvm libc. In addition, an error was found with
strcat and that was fixed.
Reviewed By: lntue
Differential Revision: https://reviews.llvm.org/D111583
Also, this adds unit tests to check that limits.h complies with the C
standard.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D110643
The C standard only guarantees the sign of return value. The exact return
value is implementation defined.
Reviewed By: gchatelet
Differential Revision: https://reviews.llvm.org/D109588
- Replace `move_byte_forward()` with `memcpy`. In `memcpy` implementation,
it copies bytes forward from beginning to end. Otherwise, `memmove` unit
tests will break.
- Make `memmove` unit tests work.
Reviewed By: gchatelet
Differential Revision: https://reviews.llvm.org/D109316
Fix edge case where "0x" would be considered a complete hexadecimal
number for purposes of str_end. Now the hexadecimal prefix needs a valid
digit after it, else just the 0 will be counted as the number.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D109084
The Fuchsia build compiles the libc and test code with lots
of warnings enabled, including all the integer conversion warnings.
There was some sloppy type usage here that triggered some of those.
Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D108800
Add inttypes.h to llvm libc. As its first functions strtoimax and
strtoumax are included.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D108736
I think this is the last windows type conversion fix, the rest of the
build seems to be okay.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D108659
Fix the errors caused by having some numbers too large for a 32 bit
number in the tests for windows. Also fix the base causing some type
confusion.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D108653
There were some copy paste errors as well as some oddities around how
windows handles the difference between long and long long types. This
change fixes those.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D108591
Adds atoi, atol, atoll, strtol, strtoll, strtoul, and strtoull to the
list of entrypoints for Windows and aarch64 linux, as well as moving
them out of the LLVM_LIBC_FULL_BUILD condition for x86_64 linux.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D108477
These functions will be used in a future patch to implement
trigonometric functions. Unit tests have been added but to the
libc-long-running-tests suite. The unit tests long running because we
compare against MPFR computations performed at 1280 bits of precision.
Some cleanups or elimination of repeated patterns can be done as follow
up changes.
Differential Revision: https://reviews.llvm.org/D104817
This suite is helpful is adding long running tests which take a long
time to finish that they can be run on the public builders. They
will probably be run on special builders in future.
Reviewed By: lntue
Differential Revision: https://reviews.llvm.org/D104816
adds a custom command for libc-scudo-integration-test that makes it run
when it is built.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D108409
This is based on the work done to add strtoll and the other strto
functions. The atoi functions also were added to stdc and
entrypoints.txt.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D108330
Updates the internal string conversion function so that it
uses the new Limits.h added in a previous commit for max and min values,
and has a templated type. This makes implementing the other strto*
functions very simple.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D107999
This change adds the stroll function, but most of the implementation is
in the new file str_conv_utils.h since many of the other integer
conversion functions are implemented through what are effectively calls
to strtoll.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D107792
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
This change adds tests to make sure that SCUDO is being properly
included with llvm libc. This change also adds the toggles to properly
use SCUDO, as GWP-ASan is enabled by default and must be included for
SCUDO to function.
Reviewed By: sivachandra, hctim
Differential Revision: https://reviews.llvm.org/D106919
Michael Jones