Alex Rønne Petersen 156ab87500
libcxx: Update to Clang 20.
See:

* https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319
* https://discourse.llvm.org/t/rfc-project-hand-in-hand-llvm-libc-libc-code-sharing/77701

We're dropping support for C++03 for Zig due to the first change; it would be
insane to ship 1018 duplicate header files just for this outdated use case.

As a result of the second change, I had to bring in a subset of the headers from
llvm-libc since libc++ now depends on these. Hopefully we can continue to get
away with not copying the entirety of llvm-libc.
2025-04-04 06:08:09 +02:00

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Vendored

//===-- Detection of _Float16 compiler builtin type -----------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_MACROS_FLOAT16_MACROS_H
#define LLVM_LIBC_MACROS_FLOAT16_MACROS_H
#include "../llvm-libc-types/float128.h"
#if defined(__FLT16_MANT_DIG__) && \
(!defined(__GNUC__) || __GNUC__ >= 13 || defined(__clang__)) && \
!defined(__arm__) && !defined(_M_ARM) && !defined(__riscv) && \
!defined(_WIN32)
#define LIBC_TYPES_HAS_FLOAT16
// TODO: This would no longer be required if HdrGen let us guard function
// declarations with multiple macros.
#ifdef LIBC_TYPES_HAS_FLOAT128
#define LIBC_TYPES_HAS_FLOAT16_AND_FLOAT128
#endif // LIBC_TYPES_HAS_FLOAT128
#endif
#endif // LLVM_LIBC_MACROS_FLOAT16_MACROS_H