File: complexify.f

package info (click to toggle)
scilab 4.0-12
  • links: PTS
  • area: non-free
  • in suites: etch, etch-m68k
  • size: 100,640 kB
  • ctags: 57,333
  • sloc: ansic: 377,889; fortran: 242,862; xml: 179,819; tcl: 42,062; sh: 10,593; ml: 9,441; makefile: 4,377; cpp: 1,354; java: 621; csh: 260; yacc: 247; perl: 130; lex: 126; asm: 72; lisp: 30
file content (41 lines) | stat: -rw-r--r-- 958 bytes parent folder | download 
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
 
      logical function complexify(n)
c     transforms the real matrix at position n into complex
      include '../stack.h'
c
      integer iadr,sadr
c
      iadr(l)=l+l-1
      sadr(l)=(l/2)+1
c
      complexify=.false.
      nn=top-rhs+n
      ln=lstk(nn)
      ln1=lstk(nn+1)
      isize=ln1-ln
      iln=iadr(ln)
      if(istk(iln+3).eq.1) then
         complexify=.true.
         return
      endif
      istk(iln+3)=1
      m1=istk(iln+1)
      n1=istk(iln+2)
      mn=m1*n1
      do 1 k=top-rhs+n,top
         lstk(k+1)=lstk(k+1)+mn
 1    continue
      lfree=lstk(top+1)
      lw=lfree-ln
      err=lfree+lw+mn-lstk(bot)
      if (err .gt. 0) then
         call error(17)
         return
      endif
      call dcopy(isize,stk(ln),1,stk(lfree),1)
      call dcopy(mn,0.0d0,0,stk(lfree+isize),1)
      call dcopy(lw-isize-mn,stk(ln1),1,stk(lfree+isize+mn),1)
      call dcopy(lw,stk(lfree),1,stk(ln),1)
      complexify=.true.
      return
      end