moved mothur's source into a folder to make grabbing just the source easier on github

[mothur.git] / sinerp.f

diff --git a/sinerp.f b/sinerp.f
deleted file mode 100644 (file)
index 061aee1..0000000
--- a/sinerp.f
+++ /dev/null
@@ -1,98 +0,0 @@
-C Output from Public domain Ratfor, version 1.0
-      subroutine sinerp(abd,ld4,nk,p1ip,p2ip,ldnk,flag)
-c
-C Purpose :  Computes Inner Products between columns of L^{-1}
-C            where L = abd is a Banded Matrix with 3 subdiagonals
-
-C The algorithm works in two passes:
-C
-C               Pass 1 computes (cj,ck) k=j,j-1,j-2,j-3 ;  j=nk, .. 1
-C               Pass 2 computes (cj,ck) k <= j-4  (If flag == 1 ).
-C
-C               A refinement of Elden's trick is used.
-c Args
-      integer ld4,nk,ldnk,flag
-      DOUBLE precision abd(ld4,nk),p1ip(ld4,nk), p2ip(ldnk,nk)
-c Locals
-      integer i,j,k
-      DOUBLE precision  wjm3(3),wjm2(2),wjm1(1),c0,c1,c2,c3
-c
-c     unnecessary initialization of c1 c2 c3 to keep g77 -Wall happy
-c
-      c1 = 0.0d0
-      c2 = 0.0d0
-      c3 = 0.0d0
-C
-C Pass 1
-      wjm3(1)=0d0
-      wjm3(2)=0d0
-      wjm3(3)=0d0
-      wjm2(1)=0d0
-      wjm2(2)=0d0
-      wjm1(1)=0d0
-      do 100 i=1,nk
-         j=nk-i+1
-         c0 = 1d0/abd(4,j)
-         if(j.le.nk-3)then
-            c1 = abd(1,j+3)*c0
-            c2 = abd(2,j+2)*c0
-            c3 = abd(3,j+1)*c0
-         else if(j.eq.nk-2)then
-            c1 = 0d0
-            c2 = abd(2,j+2)*c0
-            c3 = abd(3,j+1)*c0
-         else if(j.eq.nk-1)then
-            c1 = 0d0
-            c2 = 0d0
-            c3 = abd(3,j+1)*c0
-         else if(j.eq.nk)then
-            c1 = 0d0
-            c2 = 0d0
-            c3 = 0d0
-         endif
-         p1ip(1,j) = 0d0- (c1*wjm3(1)+c2*wjm3(2)+c3*wjm3(3))
-         p1ip(2,j) = 0d0- (c1*wjm3(2)+c2*wjm2(1)+c3*wjm2(2))
-         p1ip(3,j) = 0d0- (c1*wjm3(3)+c2*wjm2(2)+c3*wjm1(1))
-         p1ip(4,j) = c0**2 + c1**2*wjm3(1) + 2d0*c1*c2*wjm3(2)+
-     &        2d0*c1*c3*wjm3(3) + c2**2*wjm2(1) + 2d0*c2*c3*wjm2(2) +
-     &        c3**2*wjm1(1)
-         wjm3(1)=wjm2(1)
-         wjm3(2)=wjm2(2)
-         wjm3(3)=p1ip(2,j)
-         wjm2(1)=wjm1(1)
-         wjm2(2)=p1ip(3,j)
-         wjm1(1)=p1ip(4,j)
- 100  continue
-
-      if(flag.ne.0)then
-
-C     ____ Pass 2 _____
-
-C     Compute p2ip
-         do 120 i=1,nk
-            j=nk-i+1
-C           for(k=1;k<=4 & j+k-1<=nk;k=k+1) { p2ip(.) = .. }:
-            do 160 k=1,4
-               if(j+k-1 .gt. nk)goto 120
-               p2ip(j,j+k-1) = p1ip(5-k,j)
- 160        continue
- 120     continue
-
-         do 170 i=1,nk
-            j=nk-i+1
-c           for(k=j-4;k>=1;k=k-1){
-            if(j-4 .ge. 1) then
-               do 210 k= j-4,1, -1
-                  c0 = 1d0/abd(4,k)
-                  c1 = abd(1,k+3)*c0
-                  c2 = abd(2,k+2)*c0
-                  c3 = abd(3,k+1)*c0
-                  p2ip(k,j)= 0d0 - ( c1*p2ip(k+3,j) + c2*p2ip(k+2,j) +
-     &                 c3*p2ip(k+1,j) )
- 210           continue
-            endif
- 170     continue
-      endif
-      return
-      end
-