tesseract  3.03
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00001 
00002 // File:        mathfix.h
00003 // Description: Implement missing math functions
00004 // Author:      zdenop
00005 // Created:     Fri Feb 03 06:45:06 CET 2012
00006 //
00007 // (C) Copyright 2012, Google Inc.
00008 // Licensed under the Apache License, Version 2.0 (the "License");
00009 // you may not use this file except in compliance with the License.
00010 // You may obtain a copy of the License at
00011 // http://www.apache.org/licenses/LICENSE-2.0
00012 // Unless required by applicable law or agreed to in writing, software
00013 // distributed under the License is distributed on an "AS IS" BASIS,
00014 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00015 // See the License for the specific language governing permissions and
00016 // limitations under the License.
00017 //
00019 
00020 #ifndef VS2008_INCLUDE_MATHFIX_H_
00021 #define VS2008_INCLUDE_MATHFIXT_H_
00022 
00023 #ifndef _MSC_VER
00024 #error "Use this header only with Microsoft Visual C++ compilers!"
00025 #endif
00026 
00027 #include <math.h>
00028 #include <float.h>  // for _isnan(), _finite() on VC++
00029 #define isnan(x) _isnan(x)
00030 #define isinf(x) (!_finite(x))
00031 #define fmax max //VC++ does not implement all the provisions of C99 Standard
00032 #define round(x) roundf(x)
00033 inline float roundf(float num) { return num > 0 ? floorf(num + 0.5f) : ceilf(num - 0.5f); }
00034 
00035 #endif  // VS2008_INCLUDE_MATHFIXT_H_
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