llvm-project.git/libc/src/math/sin.h, branch users/nico/python-1 Unnamed repository; edit this file 'description' to name the repository. [libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597) 2024-07-12T16:28:41+00:00 Petr Hosek phosek@google.com 2024-07-12T16:28:41+00:00 5ff3ff33ff930e4ec49da7910612d8a41eb068cb This is a part of #97655. 
This is a part of #97655.
 Revert "[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration" (#98593) 2024-07-12T07:12:13+00:00 Mehdi Amini joker.eph@gmail.com 2024-07-12T07:12:13+00:00 ce9035f5bd3aa09cbd899489cdbc7f6c18acf1e3 Reverts llvm/llvm-project#98075 bots are broken 
Reverts llvm/llvm-project#98075

bots are broken
 [libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98075) 2024-07-11T19:35:22+00:00 Petr Hosek phosek@google.com 2024-07-11T19:35:22+00:00 3f30effe1bd81fa1b039218a9bfe79c3b03fafad This is a part of #97655. 
This is a part of #97655.
 [libc] Mass replace enclosing namespace (#67032) 2023-09-26T09:45:04+00:00 Guillaume Chatelet gchatelet@google.com 2023-09-26T09:45:04+00:00 b6bc9d72f65a5086f310f321e969d96e9a559e75 This is step 4 of https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079 
This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079
 [libc] Add x86_64 implementations of double precision cos, sin and tan. 2021-05-13T19:02:00+00:00 Siva Chandra Reddy sivachandra@google.com 2021-05-12T23:05:13+00:00 861dc75906829a177dc2e5249747771aa3866a06 The implementations use the x86_64 FPU instructions. These instructions are extremely slow compared to a polynomial based software implementation. Also, their accuracy falls drastically once the input goes beyond 2PI. To improve both the speed and accuracy, we will be taking the following approach going forward: 1. As a follow up to this CL, we will implement a range reduction algorithm which will expand the accuracy to the entire double precision range. 2. After that, we will replace the HW instructions with a polynomial implementation to improve the run time. After step 2, the implementations will be accurate, performant and target architecture independent. Reviewed By: lntue Differential Revision: https://reviews.llvm.org/D102384 
The implementations use the x86_64 FPU instructions. These instructions
are extremely slow compared to a polynomial based software
implementation. Also, their accuracy falls drastically once the input
goes beyond 2PI. To improve both the speed and accuracy, we will be
taking the following approach going forward:
1. As a follow up to this CL, we will implement a range reduction algorithm
which will expand the accuracy to the entire double precision range.
2. After that, we will replace the HW instructions with a polynomial
implementation to improve the run time.

After step 2, the implementations will be accurate, performant and target
architecture independent.

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D102384