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Acceleration of pt2_find

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This commit is contained in:
Anthony Scemama 2017-02-01 15:17:50 +01:00
parent 848fda1836
commit 832585a6ca
1 changed files with 10 additions and 3 deletions
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13
plugins/Full_CI_ZMQ/pt2_stoch_routines.irp.f
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@ -284,9 +284,9 @@ integer function pt2_find(v, w, sze, imin, imax)
integer :: i,l,h
l = imin
h = imax-1
h = imax
do while(h >= l)
do while(h-l > 4)
i = ishft(h+l,-1)
if(w(i+1) > v) then
h = i-1
@ -294,7 +294,14 @@ integer function pt2_find(v, w, sze, imin, imax)
l = i+1
end if
end do
pt2_find = l+1
do i=l,h
if ( w(i) <= v) then
cycle
else
pt2_find = i-1
return
endif
enddo
end function