NumCpp  2.7.0
A Templatized Header Only C++ Implementation of the Python NumPy Library
sign.hpp
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1 #pragma once
29 
33 #include "NumCpp/NdArray.hpp"
34 
35 #include <complex>
36 
37 namespace nc
38 {
39  //============================================================================
40  // Method Description:
51  template<typename dtype>
52  int8 sign(dtype inValue) noexcept
53  {
55 
56  if (inValue < dtype{ 0 })
57  {
58  return -1;
59  }
60 
61  if (inValue > dtype{ 0 })
62  {
63  return 1;
64  }
65 
66  return 0;
67  }
68 
69  //============================================================================
70  // Method Description:
81  template<typename dtype>
83  {
84  NdArray<int8> returnArray(inArray.shape());
85  stl_algorithms::transform(inArray.cbegin(), inArray.cend(), returnArray.begin(),
86  [](dtype inValue) noexcept -> int8
87  {
88  return sign(inValue);
89  });
90 
91  return returnArray;
92  }
93 } // namespace nc
#define STATIC_ASSERT_ARITHMETIC_OR_COMPLEX(dtype)
Definition: StaticAsserts.hpp:50
Holds 1D and 2D arrays, the main work horse of the NumCpp library.
Definition: NdArrayCore.hpp:72
const_iterator cbegin() const noexcept
Definition: NdArrayCore.hpp:1216
Shape shape() const noexcept
Definition: NdArrayCore.hpp:4283
const_iterator cend() const noexcept
Definition: NdArrayCore.hpp:1524
iterator begin() noexcept
Definition: NdArrayCore.hpp:1166
OutputIt transform(InputIt first, InputIt last, OutputIt destination, UnaryOperation unaryFunction)
Definition: StlAlgorithms.hpp:702
Definition: Coordinate.hpp:45
std::int8_t int8
Definition: Types.hpp:38
int8 sign(dtype inValue) noexcept
Definition: sign.hpp:52