NumCpp  2.5.1
A Templatized Header Only C++ Implementation of the Python NumPy Library
randN.hpp
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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:
50  template<typename dtype>
51  dtype randN()
52  {
53  STATIC_ASSERT_FLOAT(dtype);
54 
55  std::normal_distribution<dtype> dist;
56  return dist(generator_);
57  }
58 
59  //============================================================================
60  // Method Description:
71  template<typename dtype>
72  NdArray<dtype> randN(const Shape& inShape)
73  {
74  STATIC_ASSERT_FLOAT(dtype);
75 
76  NdArray<dtype> returnArray(inShape);
77 
78  std::normal_distribution<dtype> dist;
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_FLOAT(dtype)
Definition: StaticAsserts.hpp:43
Holds 1D and 2D arrays, the main work horse of the NumCpp library.
Definition: NdArrayCore.hpp:72
iterator end() noexcept
Definition: NdArrayCore.hpp:1558
iterator begin() noexcept
Definition: NdArrayCore.hpp:1214
A Shape Class for NdArrays.
Definition: Core/Shape.hpp:41
static std::mt19937_64 generator_
generator function
Definition: generator.hpp:39
dtype randN()
Definition: randN.hpp:51
void for_each(InputIt first, InputIt last, UnaryFunction f)
Definition: StlAlgorithms.hpp:213
Definition: Coordinate.hpp:45