tesseract/ccutil/host.h

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/******************************************************************************
** Filename: Host.h
** Purpose: This is the system independent typedefs and defines
** Author: MN, JG, MD
** Version: 5.4.1
** History: 11/7/94 MCD received the modification that Lennart made
** to port to 32 bit world and modify this file so that it
** will be shared between platform.
** 11/9/94 MCD Make MSW32 subset of MSW. Now MSW means
** MicroSoft Window and MSW32 means the 32 bit worlds
** of MicroSoft Window. Therefore you want the environment
** to be MicroSoft Window and in the 32 bit world -
** _WIN32 must be defined by your compiler.
** 11/30/94 MCD Incorporated comments received for more
** readability and the missing typedef for FLOAT.
** 12/1/94 MCD Added PFVOID typedef
** 5/1/95 MCD. Made many changes based on the inputs.
** Changes:
** 1) Rearrange the #ifdef so that there're definitions for
** particular platforms.
** 2) Took out the #define for computer and environment
** that developer can uncomment
** 3) Added __OLDCODE__ where the defines will be
** obsoleted in the next version and advise not to use.
** 4) Added the definitions for the following:
** FILE_HANDLE, MEMORY_HANDLE, BOOL8,
** MAX_INT8, MAX_INT16, MAX_INT32, MAX_UINT8
** MAX_UINT16, MAX_UINT32, MAX_FLOAT32
** 06/19/96 MCD. Took out MAX_FLOAT32
** 07/15/96 MCD. Fixed the comments error
** Add back BOOL8.
**
** (c) Copyright Hewlett-Packard Company, 1988-1996.
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
** http://www.apache.org/licenses/LICENSE-2.0
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#ifndef TESSERACT_CCUTIL_HOST_H_
#define TESSERACT_CCUTIL_HOST_H_
/******************************************************************************
** IMPORTANT!!! **
** **
** Defines either _WIN32, __MAC__, __UNIX__, __OS2__, __PM__ to
** use the specified definitions indicated below in the preprocessor settings. **
** **
** Also define either __FarProc__ or __FarData__ and __MOTO__ to use the
** specified definitions indicated below in the preprocessor settings. **
** **
** If a preprocessor settings is not allow in the compiler that is being use,
** then it is recommended that a "platform.h" is created with the definition
** of the computer and/or operating system.
******************************************************************************/
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#include <limits>
#include "platform.h"
/* _WIN32 */
#ifdef _WIN32
#include <windows.h>
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#undef min
#undef max
#endif
#include <inttypes.h> // PRId32, ...
#include <stdint.h> // int32_t, ...
/********************************************************/
/* __MAC__ */
#ifdef __MAC__
#include <Types.h>
/*----------------------------*/
/*----------------------------*/
#endif
/********************************************************/
#if defined(__UNIX__) || defined( __DOS__ ) || defined(__OS2__) || defined(__PM__)
/*----------------------------*/
/* FarProc and FarData */
/*----------------------------*/
/*----------------------------*/
#endif
/*****************************************************************************
**
** Standard GHC Definitions
**
*****************************************************************************/
#ifdef __MOTO__
#define __NATIVE__ MOTO
#else
#define __NATIVE__ INTEL
#endif
//typedef HANDLE FD* PHANDLE;
// definitions of portable data types (numbers and characters)
typedef int8_t inT8;
typedef uint8_t uinT8;
typedef int16_t inT16;
typedef uint16_t uinT16;
typedef int32_t inT32;
typedef uint32_t uinT32;
typedef int64_t inT64;
typedef uint64_t uinT64;
typedef float FLOAT32;
typedef double FLOAT64;
typedef unsigned char BOOL8;
#if defined(_WIN32)
/* MinGW defines the standard PRI... macros, but MSVS doesn't. */
#if !defined(PRId32)
# define PRId32 "d"
#endif
#if !defined(PRId64)
# define PRId64 "I64d"
#endif
#endif /* _WIN32 */
#define MAX_INT8 0x7f
#define MAX_INT16 0x7fff
#define MAX_INT32 0x7fffffff
#define MAX_UINT8 0xff
#define MAX_UINT16 0xffff
#define MAX_UINT32 0xffffffff
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#define MAX_FLOAT32 std::numeric_limits<float>::max()
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#define MIN_INT8 static_cast<inT8>(0x80)
#define MIN_INT16 static_cast<inT16>(0x8000)
#define MIN_INT32 static_cast<inT32>(0x80000000)
#define MIN_UINT8 0x00
#define MIN_UINT16 0x0000
#define MIN_UINT32 0x00000000
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// Minimum positive value ie 1e-37ish.
#define MIN_FLOAT32 std::numeric_limits<float>::min()
// Defines
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
// Return true if x is within tolerance of y
template<class T> bool NearlyEqual(T x, T y, T tolerance) {
T diff = x - y;
return diff <= tolerance && -diff <= tolerance;
}
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#endif // TESSERACT_CCUTIL_HOST_H_