adagsl_335d13f0/examples/complex/src/complex.adb

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
with Ada.Text_IO;            use Ada.Text_IO;
with Ada.Text_IO.C_Streams;
with Ada.Long_Float_Text_IO; use Ada.Long_Float_Text_IO;
with Ada.Integer_Text_IO;    use Ada.Integer_Text_IO;
with Interfaces.C;           use Interfaces.C;
with Interfaces.C.Strings;   use Interfaces.C.Strings;
with Ada.Strings.Unbounded;  use Ada.Strings.Unbounded;
with Ada.Command_Line;       use Ada.Command_Line;
with Ada.Numerics.Elementary_Functions ; use Ada.Numerics.Elementary_Functions ;
with Ada.Numerics.Generic_Complex_Types ;
with Ada.Numerics.Generic_Complex_Elementary_Functions ;
with GNAT.Source_Info; use GNAT.Source_Info;

with math ;
with gsl ;
with gsl.complex ;
with gsl.complex.math ;

procedure complex is
   use gsl.double_text_Io ;

   package AComplex is new Ada.Numerics.Generic_Complex_Types( Long_Float );
   package AC renames AComplex ;
   package ACF is new Ada.Numerics.Generic_Complex_Elementary_Functions( AComplex );

   package GSLC renames gsl.double_complex_types ;
   package GSLCF renames gsl.double_complex_functions ;
   package GSLCM renames gsl.complex.math ;
   package GSLCTIO renames gsl.complex_text_io ;

   Verbose : boolean := True ;
   procedure Sep is
   begin
      Put(" ; ");
   end Sep ;
   procedure Complex_Print( c : AComplex.Complex ) is
   begin
      Put( AC.Re(c) ); Sep ;
      Put( AC.Im(c) ); Sep ;
   end Complex_Print ;
   procedure Complex_Print( c : GSLC.Complex ) is
   begin
      Put( GSLC.Re(c) ); Sep ;
      Put( GSLC.Im(c) ); Sep ;      
   end Complex_Print ;

   procedure Complex_Print( c : gsl.complex.gsl_complex ) is
   begin
      Put( gsl.complex.Re(c) ); Sep ;
      Put( gsl.complex.Im(c) ); Sep ;  
      Put( gsl.complex.math.cabs(c)); Sep ;
      Put( gsl.complex.math.arg(c)); Sep;    
   end Complex_Print ;

   procedure T1 is
      myname : String := gnat.Source_Info.enclosing_entity ;
      logfile : File_Type ;
      a, adelta, b : double ;
   begin
      if Verbose
      then
         Put_Line(myname);
      end if ;
      Create(logfile,Out_File,myname & ".csv");
      Set_Output(logfile);
      adelta := 0.1 ;
      a := 0.0 ; 
      b := 1.0 ;
      for i in 1..10
      loop
         for j in 1..10
         loop
            b := b + adelta ;

            declare
               adac : AC.Complex
                     := AC.Compose_From_Cartesian(Long_Float(a),Long_Float(b));
               cc : GSLC.Complex
                     := GSLC.Compose_From_Cartesian(a,b) ;
               cgslc : gsl.complex.gsl_complex
                     := GSLCM.rect(a,b);
               prod : GSLC.Complex
                        := GSLC."*"(cc , cc) ;
               prod2 : gsl.complex.gsl_complex
                        := gsl.complex.math.mul(cgslc,cgslc);
            begin
               Put(a) ; Put(" ; ");
               Put(b) ; Put(" ; ");
               Put(AC."abs"(adac)); Put(" ; ") ;
               Put(AC.argument(adac)); Sep ;
               Put(GSLC."abs"(cc)); Put(" ; ");
               Put(GSLC.argument(cc)); Sep ;
               GSLCTIO.Put(cc); Sep ;
               Put(GSLCM.cabs(cgslc)); Sep ;
               Put(GSLCM.arg(cgslc)); Sep ;
               GSLCTIO.Put(prod); Sep ;
               Put( prod2.Re ) ; Sep ;
               Put( prod2.Im ) ; Sep ;
               New_Line;

            end ;
         end loop ;
         a := a + adelta ;
      end loop ;

      Set_Output(Standard_Output);
      Close(logfile);
   end T1 ;

   procedure T2 is
      myname : String := gnat.Source_Info.enclosing_entity ;
      logfile : File_Type ;
      N : Constant := 100 ;
      x, y : Long_Float := 0.0 ;
      del : Long_Float ; -- := 1.0/Long_Float(N);
      a,b : AComplex.Complex ;
      LineNo : Integer := 0;
   begin
      if Verbose
      then
         Put_Line(myname);
      end if ;
      Create(logfile,Out_File,myname & ".csv");
      Set_Output(logfile);
      del := Ada.Numerics.Pi * 2.0 / Long_Float(N) ;
      x := 0.0 ;
      AComplex.Set_Re(a,0.0);
      for i in 1..N
      loop
         AComplex.Set_Im(a,x);
         LineNo := LineNo + 1 ;
         Put( LineNo ); Sep ;
         Complex_Print(a);
         b := ACF.Exp(a);
         Complex_Print(b);
         New_Line ;
         x := x + del ;
      end loop ;
      Set_Output(Standard_Output);
      Close(logfile);
   end T2 ;


   procedure T3 is
      myname : String := gnat.Source_Info.enclosing_entity ;
      logfile : File_Type ;
      N : Constant := 100 ;
      x, y : double := 0.0 ;
      del : double ; -- := 1.0/Long_Float(N);
      a,b : gsl.complex.gsl_complex ;
      LineNo : Integer := 0;
   begin
      if Verbose
      then
         Put_Line(myname);
      end if ;
      Create(logfile,Out_File,myname & ".csv");
      Set_Output(logfile);
      del := math.M_PI * 2.0 / double(N) ;
      x := 0.0 ;

      --GSLC.Set_Re(a,math.M_PI / 4.0);
      for i in 1..N
      loop
         --GSLC.Set_Im(a,x);
         a := GSLCM.rect( math.M_PI / 2.0 , x + math.M_PI / 2.0);
         LineNo := LineNo + 1 ;
         Put( LineNo ); Sep ;
         Complex_Print(a);
         b := GSLCM.Exp(a);
         Complex_Print(b);
         New_Line ;
         x := x + del ;
      end loop ;
      Set_Output(Standard_Output);
      Close(logfile);
   end T3 ;

begin
   Ada.Long_Float_Text_Io.Default_Exp := 0;
   Ada.Long_Float_Text_Io.Default_Aft := 4 ;
   gsl.double_text_io.Default_Exp := 0;
   gsl.double_text_io.Default_Aft := 4;
   GSLCTIO.Default_Exp := 0;
   GSLCTIO.Default_Aft := 4; 
   T1 ;
   T2 ;
   T3 ;
end complex;