basedef.h

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#pragma once
 
#include "export.h"
#include <cmath>
#include <cstdint>
#include <wchar.h>
 
#if defined(BASE_LIB) | defined(BASE2017_LIB)
#  define BASE_EXPORT EXPORT_TAG
#else
#  define BASE_EXPORT IMPORT_TAG
#endif
//#define itascaxd "Error: Need to define DIM and include dim.h"
 
// Better typedefs to use in the future
// In modern C++ we maybe should stick to int32_t etc, but these
//    are shorted, and familiar to those of us who have spent a long time with Qt.
using char16 = char16_t; // Assume UTF-16 encoding
using char8  = char; // Assuming UTF-8 encoding
using int8   = int8_t;
using uint8  = uint8_t;
using int16  = int16_t;
using uint16 = uint16_t;
using int32  = int32_t;
using uint32 = uint32_t;
#ifdef __LINUX
using int64  = long long int;
using uint64 = unsigned long long int;
#else
using int64  = int64_t;
using uint64 = uint64_t;
#endif
using TType  = uint32;  
 
static constexpr int32 linuxOS = 2;
static constexpr int32 windowsOS = 1;
#ifdef __LINUX
#  include <fenv.h>
#  define _EM_OVERFLOW FE_OVERFLOW
#  define _EM_INVALID FE_INVALID
#  define _EM_UNDERFLOW FE_UNDERFLOW
#  define _EM_ZERODIVIDE FE_DIVBYZERO
  inline unsigned doClearFP() {
      int ret = fetestexcept(FE_ALL_EXCEPT);
      feclearexcept(FE_ALL_EXCEPT);
      return (unsigned)ret;
  }
#  define _clearfp doClearFP
#  define __noop() { }
  static constexpr int32 currentOS = linuxOS;
  template <typename T,typename U>
  constexpr const U &osval(const T &,const U &lval) { return lval; }
#  define OSVAL(x,y) y
#else
  static constexpr int32 currentOS = windowsOS;
  template <typename T,typename U>
  constexpr const T &osval(const T &wval,const U &) { return wval; }
#  define OSVAL(x,y) x
#endif
 
 
// Floating point utility macros and functions
// Used to check for when a FP exception happens, generally only in debug mode
#ifndef DOXYGEN
#  ifdef _DEBUG
#    define CHECK_FP_STATUS checkFPStatus(__FILE__,__LINE__)
#    define CLEAR_FP_STATUS _clearfp()
#  else
#    define CHECK_FP_STATUS __noop()
#    define CLEAR_FP_STATUS __noop()
#  endif
// A concise version of CHECK_FP_STATUS.
#  define FP_S CHECK_FP_STATUS
// A concise version of CLEAR_FP_STATUS.
#  define FP_C CLEAR_FP_STATUS
 
// To check overflow error or invalid floating point result from the \a line of the \a file
BASE_EXPORT const char16 *checkFPStatus(const char *file=0,uint32 line=0);
enum FloatingPointCheck { FloatingPointCheckOff, FloatingPointCheckWarning, FloatingPointCheckException };
BASE_EXPORT FloatingPointCheck floatingPointCheckStatus();
BASE_EXPORT void floatingPointCheckStatus(FloatingPointCheck fpc);
static constexpr bool isCurrentOS(int i) { return i==currentOS; }
#endif
 
// MACRO used before new for (auto x : c) syntax in C++.
// This should not be used in new code, and should be replaced in old code.
#define FOR(x,y) for (auto x=(y).begin();x!=(y).end();++x)
 
#ifdef NDEBUG
static constexpr bool isDebugCompile = false;
#else
static constexpr bool isDebugCompile = true;
#endif
 
// Prevent using std::filesystem directory
//   (on windows anyway, linux has an obnoxious problem with forward declarations).
#ifndef __LINUX
#  define filesystem ERROR_USE_SHARED_FILESTORE_INSTEAD
#endif
 
// EoF