e9df0a5c6c
MSVC-specific, MSVCRT-specific, or Windows-specific. Because Clang can also define _MSC_VER, and MSVCRT is not necessarily the only C runtime, these macros should not be used interchangeably. This patch divides all Windows-related bits into the aforementioned categories. Two new macros are introduced: - _LIBCPP_MSVC: Defined when compiling with MSVC. Detected using _MSC_VER, excluding Clang. - _LIBCPP_MSVCRT: Defined when using the Microsoft CRT. This is the default when _WIN32 is defined. This leaves _WIN32 for code using the Windows API. This also corrects the spelling of _LIBCP_HAS_IS_BASE_OF to _LIBCPP_HAS_IS_BASE_OF. Nico, please prepare a patch for CREDITS.TXT, thanks. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@187593 91177308-0d34-0410-b5e6-96231b3b80d8
80 lines
2.7 KiB
C++
80 lines
2.7 KiB
C++
// -*- C++ -*-
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//===--------------------- support/win32/limits_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_WIN32_H
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#define _LIBCPP_SUPPORT_WIN32_LIMITS_WIN32_H
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#if !defined(_LIBCPP_MSVCRT)
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#error "This header complements Microsoft's C Runtime library, and should not be included otherwise."
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#else
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#ifndef NOMINMAX
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#define NOMINMAX
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#endif
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#include <windows.h> // ymath.h works correctly
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#include <float.h> // limit constants
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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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#include <math.h> // HUGE_VAL
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#include <ymath.h> // internal MSVC header providing the needed functionality
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#define __builtin_huge_val() HUGE_VAL
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#define __builtin_huge_valf() _FInf._Float
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#define __builtin_huge_vall() _LInf._Long_double
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#define __builtin_nan(__dummy) _Nan._Double
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#define __builtin_nanf(__dummy) _FNan._Float
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#define __builtin_nanl(__dummmy) _LNan._Long_double
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#define __builtin_nans(__dummy) _Snan._Double
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#define __builtin_nansf(__dummy) _FSnan._Float
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#define __builtin_nansl(__dummy) _LSnan._Long_double
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#endif // _LIBCPP_MSVCRT
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#endif // _LIBCPP_SUPPORT_WIN32_LIMITS_WIN32_H
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