Commit Graph

51 Commits

Author SHA1 Message Date
Michael Jones 035325275c [libc] add inttypes header
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
2021-08-26 18:04:21 +00:00
Michael Jones eff11176c5 [libc] Enable string to integer conversion functions in the default build
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
2021-08-23 21:18:14 +00:00
Guillaume Chatelet c8f79892af [libc] Add a trivial implementation for bcmp
Differential Revision: https://reviews.llvm.org/D108225
2021-08-19 17:55:16 +00:00
Michael Jones c6d03b583b [libc] add strncmp to strings
Add strncmp as a function to strings.h. Also adds unit tests, and adds
strncmp as an entrypoint for all current platforms.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D106901
2021-07-28 21:37:12 +00:00
Tue Ly 4e5f8b4d8d [libc] Add implementation of expm1f.
Use expm1f(x) = exp(x) - 1 for |x| > ln(2).
For |x| <= ln(2), divide it into 3 subintervals: [-ln2, -1/8], [-1/8, 1/8], [1/8, ln2]
and use a degree-6 polynomial approximation generated by Sollya's fpminmax for each interval.
Errors < 1.5 ULPs when we use fma to evaluate the polynomials.

Differential Revision: https://reviews.llvm.org/D101134
2021-06-10 14:58:34 -04:00
Siva Chandra 95934c3a37 [libc] Add hardware implementations of fma and fmaf for x86_64 and aarch64.
The current generic implementation of the fmaf function has been moved
to the FPUtil directory. This allows one use the fma operation from
implementations of other math functions like the trignometric functions
without depending on/requiring the fma/fmaf/fmal function targets. If
this pattern ends being convenient, we will switch all generic math
implementations to this pattern.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D100811
2021-04-21 04:31:27 +00:00
Siva Chandra 954a7289d2 [libc] Adjust full build entrypoints for aarch64. 2021-03-12 13:50:56 -08:00
Siva Chandra Reddy 8d4ac5337f [libc][NFC] Merge llvmlibc and llvmlibm targets in to a single target.
The single target is called llvmlibc. We can add back smaller libm and
other targets in future if required.
2021-02-23 21:29:06 -08:00
Siva Chandra Reddy b7e05c874b [libc] Add implementations of the remaining fenv functions.
Namely, implementations of fegetexceptfflag, fesetexceptflag,
fegetenv, fesetenv, feholdexcept and feupdateenv have been added.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D96935
2021-02-18 13:29:40 -08:00
Siva Chandra 53fcf6bb62 [libc][aarch64] Enable a bunch of math functions.
Namely, these are the functions enabled: rint*, lrint*, llrint*, lround*,
llround*, nearbyint*. They were previously not enabled because they
required rounding mode and FP exception support. Now that rounding mode
and FP exception support is available for Aarch64, they can be enabled.
2021-02-05 15:11:17 -08:00
Siva Chandra 7bd3702b64 [libc] Extend the current fenv functions to aarch64.
This change does not try to move the common parts of x86 and aarch64 and
build few abstractions over them. While this is possible, x86 story
needs a bit of cleanup, especially around manipulation of the mxcsr
register. Moreover, on x86 one can raise exceptions without performing
exception raising operations. So, all of this can be done in follow up
patches.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D94947
2021-01-19 12:47:54 -08:00
Cheng Wang 2423ec5837 [libc] Add memmove implementation.
Use `memcpy` rather than copying bytes one by one, for there might be large
size structs to move.

Reviewed By: gchatelet, sivachandra

Differential Revision: https://reviews.llvm.org/D93195
2021-01-15 12:08:25 +08:00
Michael Jones 04edcc0263 [libc] add isascii and toascii implementations
adding both at once since these are trivial functions.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D94558
2021-01-12 23:41:20 +00:00
Tue Ly 4726bec8f2 [libc] Add implementation of fmaf.
Differential Revision: https://reviews.llvm.org/D94018
2021-01-06 17:14:20 -05:00
Siva Chandra Reddy 7f7b0dc4e1 [libc] Add implementations of nextafter[f|l] functions.
A differential fuzzer for these functions has also been added.
Along the way, a small correction has been done to the normal/subnormal
limits of x86 long double values.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D94109
2021-01-05 22:32:39 -08:00
Siva Chandra f0cd6aa614 [libc] Add remainder[f|l] and remquo[f|l] to the list of aarch64 entrypoints. 2020-12-14 18:06:05 -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
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
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
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
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
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
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
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
cgyurgyik 667843cc07 [libc] Add strtok implementation.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D85615
2020-08-11 13:44:53 -04:00
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
cgyurgyik 6cd50e7b75 [libc] Add implementations for isblank, iscntrl, isgraph, ispunct.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D85059
2020-08-04 15:16:58 -04:00
cgyurgyik e8a2af28af [libc] Adds strrchr implementation.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D84875
2020-07-31 14:38:34 -04:00
cgyurgyik e2d4bf6cec [libc] Add islower and isupper implementation.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D84960
2020-07-31 14:05:27 -04:00
cgyurgyik e263dcc3ef [libc] Implements isdigit and isalnum. Adds a utility header to inline
functions to avoid overhead of function calls.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D84893
2020-07-30 12:37:30 -04:00
cgyurgyik 686c82b974 [libc] Add scaffolding for ctype and implementation of isalpha
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D84575
2020-07-28 19:17:31 -04:00
cgyurgyik 51eeeb477f [libc] [Obvious] Place entrypoints, specs alphabetically. 2020-07-24 15:52:35 -04:00
cgyurgyik 5a9630b777 [libc] Adds implementation for memrchr.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D84469
2020-07-24 14:40:12 -04:00
Tue Ly 4096088e19 [libc] Add implementations of fmax, fmaxf, and fmaxl.
Summary: Add implementations of fmax, fmaxf, and fmaxl.

Reviewers: sivachandra

Subscribers: mgorny, tschuett, libc-commits, ecnelises

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D84385
2020-07-23 15:23:08 -04:00
cgyurgyik f773d37ee1 [libc] Implements strnlen.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D84247
2020-07-22 18:28:35 -04:00
Tue Ly 7ce32f87f9 Add implementations for fmin, fminf, and fminl. Testing infrastructure update is splitted to https://reviews.llvm.org/D83931. 2020-07-21 17:24:15 -04:00
Chris Gyurgyik a16129c138
[libc] [Obvious] Fix typo.
Fixes typo for strstr in entrypoints.
str -> src.
2020-07-21 11:52:12 -04:00
cgyurgyik d080635bfc [libc] Add strstr implementation.
Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D83956
2020-07-21 11:39:23 -04:00
cgyurgyik a4f0c58c6e [libc] Add strchr implementation. Fixes bug in memchr.
Summary: [libc] Adds strchr implementation with unit tests. Fixes signed character bug in memchr.

Reviewers: sivachandra, PaulkaToast

Reviewed By: sivachandra

Subscribers: mgorny, tschuett, ecnelises, libc-commits

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D83353
2020-07-10 14:30:20 -04:00
cgyurgyik b6a20a4970 [libc] Add memchr implementation. 2020-07-07 17:08:50 -04:00
Siva Chandra Reddy d4adac4832 [libc] Add the remaining long double flavors of nearest integer functions.
Specifically: ceill, floorl and roundl have been added.

Reviewers: asteinhauser

Differential Revision: https://reviews.llvm.org/D82591
2020-06-25 22:45:05 -07:00
Siva Chandra 25ac19de4b [libc] Enable copysignl, frexpl, logbl and modfl on aarch64. 2020-06-24 00:16:23 -07:00
Siva Chandra Reddy 139018265b [libc] Add implementations long double fabsl and truncl functions.
Current implementations of single precision and double precision
floating point operations operate on bits of the integer type of
same size. The code made use of magic masks which were listed as
literal integer values. This is not possible in the case of long
double type as the mantissa of quad-precision long double type used
on non-x86 architectures is wider that the widest integer type for
which we can list literal values. So, in this patch, to avoid
using magic masks specified with literal values, we use packed
bit-field struct types and let the compiler generate the masks.
This new scheme allows us to implement long double flavors of the
various floating point operations. To keep the size of the patch
small, only the implementations of fabs and trunc have been
switched to the new scheme. In following patches, all exisiting
implementations will be switched to the new scheme.

Reviewers: asteinhauser

Differential Revision: https://reviews.llvm.org/D82036
2020-06-18 11:08:26 -07:00
Siva Chandra 7e54df6829 [libc] Enable string functions for aarch64. 2020-06-15 09:36:40 -07:00
Siva Chandra Reddy 118c13c691 [libc] Add implementation of few floating point manipulation functions.
Implementations of copysign[f], frexp[f], logb[f], and modf[f] are added.

Reviewers: asteinhauser

Differential Revision: https://reviews.llvm.org/D81134
2020-06-11 12:23:11 -07:00