GEOS  3.8.0dev
CommonBits.h
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6  * Copyright (C) 2005-2006 Refractions Research Inc.
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14 
15 #ifndef GEOS_PRECISION_COMMONBITS_H
16 #define GEOS_PRECISION_COMMONBITS_H
17 
18 #include <geos/export.h>
19 #include <geos/constants.h> // for int64
20 
21 namespace geos {
22 namespace precision { // geos.precision
23 
33 class GEOS_DLL CommonBits {
34 
35 private:
36 
37  bool isFirst;
38 
39  int commonMantissaBitsCount;
40 
41  int64 commonBits;
42 
43  int64 commonSignExp;
44 
45 public:
46 
54  static int64 signExpBits(int64 num);
55 
67  static int numCommonMostSigMantissaBits(int64 num1, int64 num2);
68 
76  static int64 zeroLowerBits(int64 bits, int nBits);
77 
85  static int getBit(int64 bits, int i);
86 
87  CommonBits();
88 
89  void add(double num);
90 
91  double getCommon();
92 
93 };
94 
95 } // namespace geos.precision
96 } // namespace geos
97 
98 #endif // GEOS_PRECISION_COMMONBITS_H
Determines the maximum number of common most-significant bits in the mantissa of one or numbers...
Definition: CommonBits.h:33
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25