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func.h
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27 
28 #pragma once
29 
30 #include <nvbio/basic/types.h>
31 
32 namespace nvbio {
33 namespace bowtie2 {
34 namespace cuda {
35 
38 
39 struct SimpleFunc
40 {
41  enum Type { LinearFunc = 0, LogFunc = 1, SqrtFunc = 2 };
42 
44  SimpleFunc(const Type _type = LinearFunc, const float _k = 0.0f, const float _m = 1.0f) : type(_type), k(_k), m(_m) {}
45 
47  int32 operator() (const int32 x) const
48  {
49  return int32( k + m * (type == LogFunc ? logf(float(x)) :
50  type == SqrtFunc ? sqrtf(float(x)) :
51  float(x)) );
52  }
53 
54  const char* type_string() const
55  {
56  return type == LogFunc ? "log" :
57  type == SqrtFunc ? "sqrt" :
58  "linear";
59  }
60  const char* type_symbol() const
61  {
62  return type == LogFunc ? "G" :
63  type == SqrtFunc ? "S" :
64  "L";
65  }
66 
68  float k;
69  float m;
70 };
71 
73 
74 } // namespace cuda
75 } // namespace bowtie2
76 } // namespace nvbio