iir1: iir/Types.h Source File

iir1

Types.h
1
36 #ifndef IIR1_TYPES_H
37 #define IIR1_TYPES_H
38
39 #include "Common.h"
40 #include "MathSupplement.h"
41
42 namespace Iir {
43
47 struct IIR_EXPORT ComplexPair : complex_pair_t
48 {
49 ComplexPair() = default;
50
51 explicit ComplexPair (const complex_t& c1)
52 : complex_pair_t (c1, 0.)
53 {
54 if (!isReal()) throw_invalid_argument("A single complex number needs to be real.");
55 }
56
57 ComplexPair (const complex_t& c1,
58 const complex_t& c2)
59 : complex_pair_t (c1, c2)
60 {
61 }
62
63 bool isReal () const
64 {
65 return first.imag() == 0 && second.imag() == 0;
66 }
67
72 bool isMatchedPair () const
73 {
74 if (first.imag() != 0)
75 return second == std::conj (first);
76 else
77 return second.imag () == 0 &&
78 second.real () != 0 &&
79 first.real () != 0;
80 }
81
82 bool is_nan () const
83 {
84 return Iir::is_nan (first) || Iir::is_nan (second);
85 }
86 };
87
88
92 struct IIR_EXPORT PoleZeroPair
93 {
94 ComplexPair poles = ComplexPair();
95 ComplexPair zeros = ComplexPair();
96
97 PoleZeroPair () = default;
98
99 // single pole/zero
100 PoleZeroPair (const complex_t& p, const complex_t& z)
101 : poles (p), zeros (z)
102 {
103 }
104
105 // pole/zero pair
106 PoleZeroPair (const complex_t& p1, const complex_t& z1,
107 const complex_t& p2, const complex_t& z2)
108 : poles (p1, p2)
109 , zeros (z1, z2)
110 {
111 }
112
113 bool isSinglePole () const
114 {
115 return poles.second == 0. && zeros.second == 0.;
116 }
117
118 bool is_nan () const
119 {
120 return poles.is_nan() || zeros.is_nan();
121 }
122 };
123
124
125 }
126
127 #endif
Iir
Definition: Biquad.cpp:40
Iir::ComplexPair
Definition: Types.h:48
Iir::ComplexPair::isMatchedPair
bool isMatchedPair() const
Definition: Types.h:72
Iir::PoleZeroPair
Definition: Types.h:93