NumCpp  2.7.0
A Templatized Header Only C++ Implementation of the Python NumPy Library
exponential.hpp
Go to the documentation of this file.
1 #pragma once
29 
31 #include "NumCpp/Core/Shape.hpp"
32 #include "NumCpp/NdArray.hpp"
34 
35 #include <algorithm>
36 #include <random>
37 
38 namespace nc
39 {
40  namespace random
41  {
42  //============================================================================
43  // Method Description:
51  template<typename dtype>
52  dtype exponential(dtype inScaleValue = 1)
53  {
55 
56  std::exponential_distribution<dtype> dist(inScaleValue);
57  return dist(generator_);
58  }
59 
60  //============================================================================
61  // Method Description:
71  template<typename dtype>
72  NdArray<dtype> exponential(const Shape& inShape, dtype inScaleValue = 1)
73  {
75 
76  NdArray<dtype> returnArray(inShape);
77 
78  std::exponential_distribution<dtype> dist(inScaleValue);
79 
80  std::for_each(returnArray.begin(), returnArray.end(),
81  [&dist](dtype& value) -> void
82  {
83  value = dist(generator_);
84  });
85 
86  return returnArray;
87  }
88  } // namespace random
89 } // namespace nc
#define STATIC_ASSERT_ARITHMETIC(dtype)
Definition: StaticAsserts.hpp:37
Holds 1D and 2D arrays, the main work horse of the NumCpp library.
Definition: NdArrayCore.hpp:72
iterator end() noexcept
Definition: NdArrayCore.hpp:1474
iterator begin() noexcept
Definition: NdArrayCore.hpp:1166
A Shape Class for NdArrays.
Definition: Core/Shape.hpp:41
dtype exponential(dtype inScaleValue=1)
Definition: exponential.hpp:52
static std::mt19937_64 generator_
generator function
Definition: generator.hpp:39
void for_each(InputIt first, InputIt last, UnaryFunction f)
Definition: StlAlgorithms.hpp:213
Definition: Coordinate.hpp:45