Since this now allows, the init/fini array iteration has been added in
a similar fashion to x86_64 and the corresponding test enabled.
Reviewed By: jeffbailey
Differential Revision: https://reviews.llvm.org/D131133
Migrating all private STL code to the standard STL case but keeping it under the CPP namespace to avoid confusion.
Differential Revision: https://reviews.llvm.org/D130771
Migrating all private STL code to the standard STL case but keeping it under the CPP namespace to avoid confusion.
Differential Revision: https://reviews.llvm.org/D130762
Migrating all private STL code to the standard STL case but keeping it under the CPP namespace to avoid confusion.
Differential Revision: https://reviews.llvm.org/D130760
Migrating all private STL code to the standard STL case but keeping it under the CPP namespace to avoid confusion.
Differential Revision: https://reviews.llvm.org/D130773
Migrating all private STL code to the standard STL case but keeping it under the CPP namespace to avoid confusion. Starting with the type_traits header.
Differential Revision: https://reviews.llvm.org/D130727
New exp2 function algorithm:
1) Improved performance: 8.176 vs 15.270 by core-math perf tool.
2) Improved accuracy. Only two special values left.
3) Lookup table size reduced twice.
Differential Revision: https://reviews.llvm.org/D129005
Change `sinf` range reduction to mod pi/16 to be shared with `cosf`.
Previously, `sinf` used range reduction `mod pi`, but this cannot be used to implement `cosf` since the minimax algorithm for `cosf` does not converge due to critical points at `pi/2`. In order to be able to share the same range reduction functions for both `sinf` and `cosf`, we change the range reduction to `mod pi/16` for the following reasons:
- The table size is sufficiently small: 32 entries for `sin(k * pi/16)` with `k = 0..31`. It could be reduced to 16 entries if we treat the final sign separately, with an extra multiplication at the end.
- The polynomials' degrees are reduced to 7/8 from 15, with extra computations to combine `sin` and `cos` with trig sum equality.
- The number of exceptional cases reduced to 2 (with FMA) and 3 (without FMA).
- The latency is reduced while maintaining similar throughput as before.
Reviewed By: zimmermann6
Differential Revision: https://reviews.llvm.org/D130629
The floating point functions all use the same inf and nan formatting. By
separating this functionality out of the %a conversion I make it
available for reuse by %f/e/g.
Reviewed By: lntue, sivachandra
Differential Revision: https://reviews.llvm.org/D129665
The standard says two equal pointers must compare equal
so there is no need to call the user comparator function
in this case.
Differential Revision: https://reviews.llvm.org/D130310
With correctly rounded implementations, these functions will be tested for all
rounding modes. Since fegetround and fesetround are not implemented for arm32,
these tests will fail in all non-default rounding modes. We will re-enable
these entrypoints and tests once fegetround and fesetround are implemented for
arm32.
Add float type and flag for nearest integer to automatically test with
and without SSE4.2 flag.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D129916
Printf's integer converter has been modified to use the new converter. In
future, it will be used to implement other parts of the libc.
Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D130227
Currently, there are two string parsers that can be used in a call to
strtofloatingpoint. There is the main parser used by Clinger's fast path
and Eisel-Lemire, and the backup parser used by Simple Decimal
Conversion. There was a bug in the backup parser where if the number had
more than 800 digits (the size of the SDC buffer) before the decimal
point, it would just ignore the digits after the 800th and not count
them into the exponent. This patch fixes that issue and adds regression
tests.
Reviewed By: lntue
Differential Revision: https://reviews.llvm.org/D130032
The API in StringView.h for remove_prefix was incorrect and was returning a
new StringView rather than just altering the view.
As part of this, also removed some of the safety features. The comment
correctly noted that the behaviour is undefined in some cases,
but the code and test cases checked for that.
One caller was relying on the old behaviour, so fixed it and added some
comments.
Tested:
check-libc
llvmlibc
libc-loader-tests
Reviewed By: gchatelet
Differential Revision: https://reviews.llvm.org/D129950
This adds functionality for rounding towards negative inf, positive inf,
and zero to the float hex conversion (%a).
Reviewed By: lntue
Differential Revision: https://reviews.llvm.org/D129702
This patch adds all the string and stdlib entrypoints, as well as a few
math entrypoints to the arm32 build.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D129821
Siva Chandra