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https://github.com/LCPQ/quantum_package
synced 2024-06-26 07:02:14 +02:00
Radix sort for negative numbers
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dc2481c966
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@ -64,9 +64,9 @@ BEGIN_TEMPLATE
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integer :: i,j,k
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integer, allocatable :: iorder(:)
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integer(8), allocatable :: bit_tmp(:)
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integer(8) :: last_key
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integer(8), external :: spin_det_search_key
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integer*8, allocatable :: bit_tmp(:)
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integer*8 :: last_key
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integer*8, external :: spin_det_search_key
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logical,allocatable :: duplicate(:)
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allocate ( iorder(N_det), bit_tmp(N_det), duplicate(N_det) )
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@ -514,7 +514,7 @@ BEGIN_PROVIDER [ double precision, psi_bilinear_matrix_transp_values, (N_det,N_
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enddo
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!$OMP ENDDO
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!$OMP END PARALLEL
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call i8sort(to_sort, psi_bilinear_matrix_transp_order, N_det)
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call i8radix_sort(to_sort, psi_bilinear_matrix_transp_order, N_det,-1)
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call iset_order(psi_bilinear_matrix_transp_rows,psi_bilinear_matrix_transp_order,N_det)
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call iset_order(psi_bilinear_matrix_transp_columns,psi_bilinear_matrix_transp_order,N_det)
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do l=1,N_states
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@ -186,6 +186,15 @@ BEGIN_TEMPLATE
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end
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SUBST [ X, type ]
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; real ;;
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d ; double precision ;;
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i ; integer ;;
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i8 ; integer*8 ;;
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i2 ; integer*2 ;;
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END_TEMPLATE
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BEGIN_TEMPLATE
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subroutine $Xsort(x,iorder,isize)
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implicit none
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BEGIN_DOC
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@ -208,6 +217,24 @@ BEGIN_TEMPLATE
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SUBST [ X, type ]
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; real ;;
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d ; double precision ;;
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END_TEMPLATE
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BEGIN_TEMPLATE
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subroutine $Xsort(x,iorder,isize)
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implicit none
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BEGIN_DOC
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! Sort array x(isize).
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! iorder in input should be (1,2,3,...,isize), and in output
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! contains the new order of the elements.
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END_DOC
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integer,intent(in) :: isize
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$type,intent(inout) :: x(isize)
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integer,intent(inout) :: iorder(isize)
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integer :: n
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call $Xradix_sort(x,iorder,isize,-1)
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end subroutine $Xsort
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SUBST [ X, type ]
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i ; integer ;;
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i8 ; integer*8 ;;
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i2 ; integer*2 ;;
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@ -328,33 +355,78 @@ BEGIN_TEMPLATE
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integer, intent(in) :: iradix
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integer :: iradix_new
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integer*$type, allocatable :: x2(:), x1(:)
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integer*$type :: i4
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integer*$type :: i4 ! data type
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integer*$int_type, allocatable :: iorder1(:),iorder2(:)
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integer*$int_type :: i0, i1, i2, i3, i
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integer, parameter :: integer_size=$octets
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integer*$int_type :: i0, i1, i2, i3, i ! index type
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integer*$type :: mask
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integer :: nthreads, omp_get_num_threads
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integer :: err
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!DIR$ ATTRIBUTES ALIGN : 128 :: iorder1,iorder2, x2, x1
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if (iradix == -1) then
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if (iradix == -1) then ! Sort Positive and negative
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allocate(x1(isize),iorder1(isize), x2(isize),iorder2(isize),stat=err)
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if (err /= 0) then
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print *, irp_here, ': Unable to allocate arrays'
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stop
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endif
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i1=1_$int_type
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i2=1_$int_type
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do i=1_$int_type,isize
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if (x(i) < 0_$type) then
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iorder1(i1) = iorder(i)
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x1(i1) = -x(i)
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i1 = i1+1_$int_type
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else
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iorder2(i2) = iorder(i)
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x2(i2) = x(i)
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i2 = i2+1_$int_type
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endif
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enddo
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i1=i1-1_$int_type
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i2=i2-1_$int_type
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do i=1_$int_type,i2
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iorder(i1+i) = iorder2(i)
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x(i1+i) = x2(i)
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enddo
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deallocate(x2,iorder2,stat=err)
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if (err /= 0) then
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print *, irp_here, ': Unable to deallocate arrays x2, iorder2'
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stop
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endif
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if (i1 > 1_$int_type) then
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call $Xradix_sort$big(x1,iorder1,i1,-2)
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do i=1_$int_type,i1
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x(i) = -x1(1_$int_type+i1-i)
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iorder(i) = iorder1(1_$int_type+i1-i)
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enddo
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endif
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deallocate(x1,iorder1,stat=err)
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if (err /= 0) then
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print *, irp_here, ': Unable to deallocate arrays x1, iorder1'
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stop
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endif
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if (i2>1_$int_type) then
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call $Xradix_sort$big(x(i1+1_$int_type),iorder(i1+1_$int_type),i2,-2)
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endif
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return
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else if (iradix == -2) then ! Positive
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! Find most significant bit
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i0 = 0_$int_type
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i4 = -1_$type
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i4 = maxval(x)
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do i=1,isize
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i4 = max(i4,x(i))
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enddo
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i3 = int(i4,$int_type)
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iradix_new = integer_size-1-leadz(i3)
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iradix_new = $integer_size-1-leadz(i4)
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mask = ibset(0_$type,iradix_new)
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nthreads = 1
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! nthreads = 1+ishft(omp_get_num_threads(),-1)
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integer :: err
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allocate(x1(isize/nthreads+1),iorder1(isize/nthreads+1),x2(isize/nthreads+1),iorder2(isize/nthreads+1),stat=err)
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allocate(x1(isize),iorder1(isize), x2(isize),iorder2(isize),stat=err)
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if (err /= 0) then
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print *, irp_here, ': Unable to allocate arrays'
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stop
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@ -363,7 +435,7 @@ BEGIN_TEMPLATE
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i1=1_$int_type
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i2=1_$int_type
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do i=1,isize
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do i=1_$int_type,isize
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if (iand(mask,x(i)) == 0_$type) then
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iorder1(i1) = iorder(i)
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x1(i1) = x(i)
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@ -377,7 +449,7 @@ BEGIN_TEMPLATE
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i1=i1-1_$int_type
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i2=i2-1_$int_type
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do i=1,i1
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do i=1_$int_type,i1
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iorder(i0+i) = iorder1(i)
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x(i0+i) = x1(i)
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enddo
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@ -390,7 +462,7 @@ BEGIN_TEMPLATE
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endif
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do i=1,i2
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do i=1_$int_type,i2
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iorder(i0+i) = iorder2(i)
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x(i0+i) = x2(i)
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enddo
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@ -402,12 +474,12 @@ BEGIN_TEMPLATE
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endif
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if (i3>1) then
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if (i3>1_$int_type) then
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call $Xradix_sort$big(x,iorder,i3,iradix_new-1)
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endif
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if (isize-i3>1) then
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call $Xradix_sort$big(x(i3+1),iorder(i3+1),isize-i3,iradix_new-1)
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if (isize-i3>1_$int_type) then
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call $Xradix_sort$big(x(i3+1_$int_type),iorder(i3+1_$int_type),isize-i3,iradix_new-1)
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endif
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return
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@ -429,24 +501,24 @@ BEGIN_TEMPLATE
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mask = ibset(0_$type,iradix)
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i0=1
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i1=1
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i0=1_$int_type
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i1=1_$int_type
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do i=1,isize
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do i=1_$int_type,isize
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if (iand(mask,x(i)) == 0_$type) then
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iorder(i0) = iorder(i)
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x(i0) = x(i)
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i0 = i0+1
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i0 = i0+1_$int_type
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else
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iorder2(i1) = iorder(i)
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x2(i1) = x(i)
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i1 = i1+1
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i1 = i1+1_$int_type
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endif
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enddo
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i0=i0-1
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i1=i1-1
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i0=i0-1_$int_type
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i1=i1-1_$int_type
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do i=1,i1
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do i=1_$int_type,i1
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iorder(i0+i) = iorder2(i)
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x(i0+i) = x2(i)
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enddo
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@ -463,8 +535,8 @@ BEGIN_TEMPLATE
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endif
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if (i1>1) then
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call $Xradix_sort$big(x(i0+1),iorder(i0+1),i1,iradix-1)
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if (i1>1_$int_type) then
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call $Xradix_sort$big(x(i0+1_$int_type),iorder(i0+1_$int_type),i1,iradix-1)
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endif
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if (i0>1) then
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call $Xradix_sort$big(x,iorder,i0,iradix-1)
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@ -472,11 +544,11 @@ BEGIN_TEMPLATE
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end
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SUBST [ X, type, octets, is_big, big, int_type ]
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SUBST [ X, type, integer_size, is_big, big, int_type ]
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i ; 4 ; 32 ; .False. ; ; 4 ;;
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i8 ; 8 ; 32 ; .False. ; ; 4 ;;
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i2 ; 2 ; 32 ; .False. ; ; 4 ;;
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i ; 4 ; 64 ; .True. ; _big ; 8 ;;
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i8 ; 8 ; 64 ; .False. ; ; 4 ;;
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i2 ; 2 ; 16 ; .False. ; ; 4 ;;
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i ; 4 ; 32 ; .True. ; _big ; 8 ;;
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i8 ; 8 ; 64 ; .True. ; _big ; 8 ;;
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END_TEMPLATE
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