NumCpp  2.5.1
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:
53  template<typename dtype>
54  int8 sign(dtype inValue) noexcept
55  {
57 
58  if (inValue < dtype{ 0 })
59  {
60  return -1;
61  }
62 
63  if (inValue > dtype{ 0 })
64  {
65  return 1;
66  }
67 
68  return 0;
69  }
70 
71  //============================================================================
72  // Method Description:
85  template<typename dtype>
87  {
88  NdArray<int8> returnArray(inArray.shape());
89  stl_algorithms::transform(inArray.cbegin(), inArray.cend(), returnArray.begin(),
90  [](dtype inValue) noexcept -> int8
91  {
92  return sign(inValue);
93  });
94 
95  return returnArray;
96  }
97 } // 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:1270
Shape shape() const noexcept
Definition: NdArrayCore.hpp:4483
const_iterator cend() const noexcept
Definition: NdArrayCore.hpp:1614
iterator begin() noexcept
Definition: NdArrayCore.hpp:1214
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:54