5d50aa3204
Summary: This patch refactors and tries to remove as much of the Windows support headers as possible. This is needed because they currently introduce super weird include cycles and dependencies between STL and libc headers. The changes in this patch are: * remove `support/win32/support.h` completely. The required parts have either been moved into `support/win32/msvc_support.h` (for `MSVC` only helpers not needed by Clang), or directly into their respective `foo.h` headers. * Combine `locale_win32.h` and `locale_mgmt_win32.h` into a single headers, this header should only be included within `__locale` or `locale` to avoid include cycles. * Remove the unneeded parts of `limits_win32.h` and re-name it to `limits_msvc_win32.h` since it's only needed by Clang. I've tested this patch using Clang on Windows, but I suspect it might technically regress our non-existent support for MSVC. Is somebody able to double check? This refactor is needed to support upcoming fixes to `<locale>` on Windows. Reviewers: bcraig, rmaprath, compnerd, EricWF Reviewed By: EricWF Subscribers: majnemer, cfe-commits Differential Revision: https://reviews.llvm.org/D32988 llvm-svn: 302727
73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
// -*- C++ -*-
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//===------------------ support/win32/limits_msvc_win32.h -----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_SUPPORT_WIN32_LIMITS_MSVC_WIN32_H
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#define _LIBCPP_SUPPORT_WIN32_LIMITS_MSVC_WIN32_H
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#if !defined(_LIBCPP_MSVCRT)
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#error "This header complements the Microsoft C Runtime library, and should not be included otherwise."
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#endif
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#if defined(__clang__)
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#error "This header should only be included when using Microsofts C1XX frontend"
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#endif
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#include <limits.h> // CHAR_BIT
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#include <float.h> // limit constants
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#include <math.h> // HUGE_VAL
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#include <ymath.h> // internal MSVC header providing the needed functionality
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#define __CHAR_BIT__ CHAR_BIT
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#define __FLT_MANT_DIG__ FLT_MANT_DIG
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#define __FLT_DIG__ FLT_DIG
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#define __FLT_RADIX__ FLT_RADIX
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#define __FLT_MIN_EXP__ FLT_MIN_EXP
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#define __FLT_MIN_10_EXP__ FLT_MIN_10_EXP
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#define __FLT_MAX_EXP__ FLT_MAX_EXP
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#define __FLT_MAX_10_EXP__ FLT_MAX_10_EXP
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#define __FLT_MIN__ FLT_MIN
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#define __FLT_MAX__ FLT_MAX
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#define __FLT_EPSILON__ FLT_EPSILON
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// predefined by MinGW GCC
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#define __FLT_DENORM_MIN__ 1.40129846432481707092e-45F
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#define __DBL_MANT_DIG__ DBL_MANT_DIG
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#define __DBL_DIG__ DBL_DIG
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#define __DBL_RADIX__ DBL_RADIX
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#define __DBL_MIN_EXP__ DBL_MIN_EXP
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#define __DBL_MIN_10_EXP__ DBL_MIN_10_EXP
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#define __DBL_MAX_EXP__ DBL_MAX_EXP
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#define __DBL_MAX_10_EXP__ DBL_MAX_10_EXP
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#define __DBL_MIN__ DBL_MIN
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#define __DBL_MAX__ DBL_MAX
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#define __DBL_EPSILON__ DBL_EPSILON
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// predefined by MinGW GCC
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#define __DBL_DENORM_MIN__ double(4.94065645841246544177e-324L)
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#define __LDBL_MANT_DIG__ LDBL_MANT_DIG
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#define __LDBL_DIG__ LDBL_DIG
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#define __LDBL_RADIX__ LDBL_RADIX
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#define __LDBL_MIN_EXP__ LDBL_MIN_EXP
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#define __LDBL_MIN_10_EXP__ LDBL_MIN_10_EXP
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#define __LDBL_MAX_EXP__ LDBL_MAX_EXP
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#define __LDBL_MAX_10_EXP__ LDBL_MAX_10_EXP
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#define __LDBL_MIN__ LDBL_MIN
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#define __LDBL_MAX__ LDBL_MAX
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#define __LDBL_EPSILON__ LDBL_EPSILON
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// predefined by MinGW GCC
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#define __LDBL_DENORM_MIN__ 3.64519953188247460253e-4951L
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// __builtin replacements/workarounds
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#define __builtin_huge_vall() _LInf._Long_double
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#define __builtin_nanl(__dummmy) _LNan._Long_double
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#define __builtin_nansl(__dummy) _LSnan._Long_double
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#endif // _LIBCPP_SUPPORT_WIN32_LIMITS_MSVC_WIN32_H
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