UoN / SACAMOS

Blame view

SRC/PUL_PARAMETER_CALCULATION/Aprod.F90 3.35 KB
Edit Raw Normal View History
fe64b32b   Chris Smartt   Update file heade... 
1
2
 
!
! This file is part of SACAMOS, State of the Art CAble MOdels for Spice.
44c11f06   Chris Smartt   Include software ... 
3
4
5
 
! It was developed by the University of Nottingham and the Netherlands Aerospace 
! Centre (NLR) for ESA under contract number 4000112765/14/NL/HK.
!
fe64b32b   Chris Smartt   Update file heade... 
6
 
! Copyright (C) 2016-2018 University of Nottingham
44c11f06   Chris Smartt   Include software ... 
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
! 
! SACAMOS is free software: you can redistribute it and/or modify it under the 
! terms of the GNU General Public License as published by the Free Software 
! Foundation, either version 3 of the License, or (at your option) any later 
! version.
! 
! SACAMOS is distributed in the hope that it will be useful, but 
! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
! or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
! for more details.
! 
! A copy of the GNU General Public License version 3 can be found in the 
! file GNU_GPL_v3 in the root or at <http://www.gnu.org/licenses/>.
! 
! SACAMOS uses the EISPACK library (in /SRC/EISPACK). EISPACK is subject to 
! the GNU Lesser General Public License. A copy of the GNU Lesser General Public 
! License version can be found in the file GNU_LGPL in the root of EISPACK 
! (/SRC/EISPACK ) or at <http://www.gnu.org/licenses/>.
! 
! The University of Nottingham can be contacted at: ggiemr@nottingham.ac.uk
!
fe64b32b   Chris Smartt   Update file heade... 
28
 
!
44c11f06   Chris Smartt   Include software ... 
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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
 
! File Contents:
! 
!     SUBROUTINE Aprod
!     SUBROUTINE ATprod
!     SUBROUTINE zAprod
!     SUBROUTINE zATprod
!
! NAME
!     SUBROUTINE Aprod
!
! DESCRIPTION
!     Matrix vector multiplication for sparse, real matrices
!
! COMMENTS
!     
!
! HISTORY
!    19/3/2018 CJS 
!
!
SUBROUTINE Aprod ( n, x, y )

! form the vector y=K*x

USE type_specifications

IMPLICIT NONE

integer n
real(dp) :: x(n), y(n)

integer :: i,row,col

! START

y(:)=0d0

do i=1,n_entry
  row=i_K(i)
  col=j_K(i)
  
!  if (row.GT.n) then
!    write(*,*)'Error in Aprod, row=',row,' n=',n
!  end if
!  if (col.GT.n) then
!    write(*,*)'Error in Aprod, col=',col,' n=',n
!  end if
  
  y(row)=y(row)+s_K_re(i)*x(col)
  
end do

RETURN

END SUBROUTINE Aprod 
!
! NAME
!     SUBROUTINE ATprod
!
! DESCRIPTION
!     Transpose Matrix vector multiplication for sparse, real matrices
!
! COMMENTS
!     
!
! HISTORY
!    19/3/2018 CJS 
!
!
SUBROUTINE ATprod ( n, x, y )

! form the vector y=AT*x

USE type_specifications

IMPLICIT NONE

integer n
real(dp) :: x(n), y(n)

integer :: i,row,col

! START

y(:)=0d0

do i=1,n_entry
  row=j_K(i)
  col=i_K(i)
    
  y(row)=y(row)+s_K_re(i)*x(col)
  
end do

RETURN

END SUBROUTINE ATprod 
!
! NAME
!     SUBROUTINE zAprod
!
! DESCRIPTION
!     Matrix vector multiplication for sparse, real matrices
!
! COMMENTS
!     
!
! HISTORY
!    19/3/2018 CJS 
!
!
SUBROUTINE zAprod ( n, x, y )

! form the vector y=A*x

USE type_specifications

IMPLICIT NONE

integer n
complex(dp) :: x(n), y(n)

integer :: i,row,col

! START

y(:)=0d0

do i=1,n_entry
  row=i_K(i)
  col=j_K(i)
  
  y(row)=y(row)+s_K(i)*x(col)
  
end do

RETURN

END SUBROUTINE zAprod 
!     
! NAME
!     SUBROUTINE zATprod
!
! DESCRIPTION
!     Transpose Matrix vector multiplication for sparse, real matrices
!
! COMMENTS
!     
!
! HISTORY
!    19/3/2018 CJS 
!
!
SUBROUTINE zATprod ( n, x, y )

! form the vector y=AT*x

USE type_specifications

IMPLICIT NONE

integer n
complex(dp) :: x(n), y(n)

integer :: i,row,col

! START

y(:)=0d0

do i=1,n_entry
  row=j_K(i)
  col=i_K(i)
    
  y(row)=y(row)+(s_K(i))*x(col)
  
end do

RETURN

END SUBROUTINE zATprod