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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support for C++03 for Zig due to the first change; it would be insane to ship 1018 duplicate header files just for this outdated use case.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.
92 lines
2 KiB
C++
Vendored
92 lines
2 KiB
C++
Vendored
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_CFLOAT
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#define _LIBCPP_CFLOAT
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/*
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cfloat synopsis
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Macros:
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FLT_ROUNDS
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FLT_EVAL_METHOD // C99
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FLT_RADIX
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FLT_HAS_SUBNORM // C11
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DBL_HAS_SUBNORM // C11
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LDBL_HAS_SUBNORM // C11
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FLT_MANT_DIG
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DBL_MANT_DIG
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LDBL_MANT_DIG
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DECIMAL_DIG // C99
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FLT_DECIMAL_DIG // C11
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DBL_DECIMAL_DIG // C11
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LDBL_DECIMAL_DIG // C11
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FLT_DIG
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DBL_DIG
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LDBL_DIG
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FLT_MIN_EXP
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DBL_MIN_EXP
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LDBL_MIN_EXP
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FLT_MIN_10_EXP
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DBL_MIN_10_EXP
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LDBL_MIN_10_EXP
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FLT_MAX_EXP
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DBL_MAX_EXP
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LDBL_MAX_EXP
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FLT_MAX_10_EXP
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DBL_MAX_10_EXP
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LDBL_MAX_10_EXP
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FLT_MAX
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DBL_MAX
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LDBL_MAX
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FLT_EPSILON
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DBL_EPSILON
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LDBL_EPSILON
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FLT_MIN
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DBL_MIN
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LDBL_MIN
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FLT_TRUE_MIN // C11
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DBL_TRUE_MIN // C11
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LDBL_TRUE_MIN // C11
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*/
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#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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# include <__cxx03/cfloat>
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#else
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# include <__config>
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# include <float.h>
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# ifndef _LIBCPP_FLOAT_H
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# error <cfloat> tried including <float.h> but didn't find libc++'s <float.h> header. \
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This usually means that your header search paths are not configured properly. \
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The header search paths should contain the C++ Standard Library headers before \
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any C Standard Library, and you are probably using compiler flags that make that \
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not be the case.
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# endif
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# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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# endif
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#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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#endif // _LIBCPP_CFLOAT
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