Embedded Template Library  1.0
sqrt.h
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6 Embedded Template Library.
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30 
31 #ifndef ETL_SQRT_INCLUDED
32 #define ETL_SQRT_INCLUDED
33 
34 #include <stddef.h>
35 
36 #include "platform.h"
37 #include "type_traits.h"
38 #include "constant.h"
39 
40 namespace etl
41 {
42  //***************************************************************************
44  //***************************************************************************
45  template <size_t VALUE, size_t I = 1>
46  struct sqrt
47  {
48  typedef typename etl::conditional<((I * I) > VALUE),
49  etl::constant<intmax_t, I - 1>,
51 
52 #if ETL_CPP11_SUPPORTED
53  static constexpr size_t value = type::value;
54 #else
55  enum
56  {
57  // Recursive definition.
58  value = type::value
59  };
60 #endif
61  };
62 
63 #if ETL_CPP17_SUPPORTED
64  template <size_t VALUE, size_t I = 1>
65  inline constexpr size_t sqrt_v = sqrt<VALUE, I>::value;
66 #endif
67 }
68 
69 #endif
Definition: constant.h:45
conditional
Definition: type_traits_generator.h:1202
Definition: absolute.h:37
Calculates the smallest value that, when squared, will be not greater than VALUE.
Definition: sqrt.h:47