File: wcopy.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 (42 lines) | stat: -rw-r--r-- 969 bytes parent folder | download | duplicates (6) 
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
 
C/MEMBR ADD NAME=WCOPY,SSI=0
c     Copyright INRIA
      subroutine  wcopy(n,dxr,dxi,incx,dyr,dyi,incy)
c!calling sequence
c      subroutine  dcopy(n,dxr,dxi,incx,dyr,dyi,incy)
c
c!purpose
c     copies a vector, x, to a vector, y.
c     uses unrolled loops for increments equal to one.
c!originator
c     jack dongarra, linpack, 3/11/78.
c!
c
       double precision dxr(*),dxi(*),dyr(*),dyi(*)
      integer i,incx,incy,ix,iy,n
c
      if(n.le.0)return
      if(incx.eq.1.and.incy.eq.1)go to 20
c
c code for unequal increments or equal increments not equal to 1
c
      ix = 1
      iy = 1
      if(incx.lt.0)ix = (-n+1)*incx + 1
      if(incy.lt.0)iy = (-n+1)*incy + 1
      do 10 i = 1,n
        dyr(iy) = dxr(ix)
        dyi(iy) = dxi(ix)
        ix = ix + incx
        iy = iy + incy
   10 continue
      return
c
c code for both increments equal to 1
c
   20 continue
      do 30 i = 1,n
        dyr(i) = dxr(i)
        dyi(i) = dxi(i)
   30 continue
c
      end