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105 lines
3.3 KiB
Fortran
105 lines
3.3 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006-2018
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! Salvatore Filippone
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! Alfredo Buttari
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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! File: psb_spge_dot.f90
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! Function: X_spge_dot
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!
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! Compute the dot product between a sparse vector and a dense vector.
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!
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function psb_s_spge_dot(nv1,iv1,v1,v2) result(dot)
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use psb_const_mod
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integer(psb_ipk_), intent(in) :: nv1
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integer(psb_ipk_), intent(in) :: iv1(*)
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real(psb_spk_), intent(in) :: v1(*),v2(*)
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real(psb_spk_) :: dot
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integer(psb_ipk_) :: i,j,k, ip1, ip2
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dot = szero
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ip1 = 1
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do i=1, nv1
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dot = dot + v1(i)*v2(iv1(i))
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end do
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end function psb_s_spge_dot
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function psb_d_spge_dot(nv1,iv1,v1,v2) result(dot)
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use psb_const_mod
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integer(psb_ipk_), intent(in) :: nv1
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integer(psb_ipk_), intent(in) :: iv1(*)
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real(psb_dpk_), intent(in) :: v1(*),v2(*)
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real(psb_dpk_) :: dot
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integer(psb_ipk_) :: i,j,k, ip1, ip2
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dot = dzero
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do i=1, nv1
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dot = dot + v1(i)*v2(iv1(i))
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end do
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end function psb_d_spge_dot
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function psb_c_spge_dot(nv1,iv1,v1,v2) result(dot)
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use psb_const_mod
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integer(psb_ipk_), intent(in) :: nv1
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integer(psb_ipk_), intent(in) :: iv1(*)
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complex(psb_spk_), intent(in) :: v1(*),v2(*)
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complex(psb_spk_) :: dot
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integer(psb_ipk_) :: i,j,k, ip1, ip2
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dot = czero
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do i=1, nv1
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dot = dot + v1(i)*v2(iv1(i))
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end do
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end function psb_c_spge_dot
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function psb_z_spge_dot(nv1,iv1,v1,v2) result(dot)
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use psb_const_mod
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integer(psb_ipk_), intent(in) :: nv1
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integer(psb_ipk_), intent(in) :: iv1(*)
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complex(psb_dpk_), intent(in) :: v1(*),v2(*)
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complex(psb_dpk_) :: dot
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integer(psb_ipk_) :: i,j,k, ip1, ip2
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dot = zzero
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do i=1, nv1
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dot = dot + v1(i)*v2(iv1(i))
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end do
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end function psb_z_spge_dot
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