cuda_math.f90

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module cuda_math
  use num_types, only: rp, c_rp
  implicit none
  public
 
  interface
     subroutine cuda_copy(a_d, b_d, n) &
          bind(c, name = 'cuda_copy')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d
       integer(c_int) :: n
     end subroutine cuda_copy
 
     subroutine cuda_masked_copy(a_d, b_d, mask_d, n, m) &
          bind(c, name = 'cuda_masked_copy')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d, mask_d
       integer(c_int) :: n, m
     end subroutine cuda_masked_copy
 
     subroutine cuda_masked_red_copy(a_d, b_d, mask_d, n, m) &
          bind(c, name = 'cuda_masked_red_copy')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d, mask_d
       integer(c_int) :: n, m
     end subroutine cuda_masked_red_copy
 
     subroutine cuda_cfill_mask(a_d, c, size, mask_d, mask_size) &
          bind(c, name = 'cuda_cfill_mask')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d
       real(c_rp) :: c
       integer(c_int) :: size
       type(c_ptr), value :: mask_d
       integer(c_int) :: mask_size
     end subroutine cuda_cfill_mask
 
     subroutine cuda_cmult(a_d, c, n) &
          bind(c, name = 'cuda_cmult')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d
       real(c_rp) :: c
       integer(c_int) :: n
     end subroutine cuda_cmult
 
     subroutine cuda_cmult2(a_d, b_d, c, n) &
          bind(c, name = 'cuda_cmult2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d
       real(c_rp) :: c
       integer(c_int) :: n
     end subroutine cuda_cmult2
 
     subroutine cuda_cadd(a_d, c, n) &
          bind(c, name = 'cuda_cadd')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d
       real(c_rp) :: c
       integer(c_int) :: n
     end subroutine cuda_cadd
 
     subroutine cuda_cadd2(a_d, b_d, c, n) &
          bind(c, name = 'cuda_cadd2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d
       type(c_ptr), value :: b_d
       real(c_rp) :: c
       integer(c_int) :: n
     end subroutine cuda_cadd2
 
     subroutine cuda_cfill(a_d, c, n) &
          bind(c, name = 'cuda_cfill')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d
       real(c_rp) :: c
       integer(c_int) :: n
     end subroutine cuda_cfill
 
     subroutine cuda_rzero(a_d, n) &
          bind(c, name = 'cuda_rzero')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d
       integer(c_int) :: n
     end subroutine cuda_rzero
 
     subroutine cuda_add2(a_d, b_d, n) &
          bind(c, name = 'cuda_add2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d
       integer(c_int) :: n
     end subroutine cuda_add2
 
     subroutine cuda_add4(a_d, b_d, c_d, d_d, n) &
          bind(c, name = 'cuda_add4')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d, c_d, d_d
       integer(c_int) :: n
     end subroutine cuda_add4
 
     subroutine cuda_add2s1(a_d, b_d, c1, n) &
          bind(c, name = 'cuda_add2s1')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d
       real(c_rp) :: c1
       integer(c_int) :: n
     end subroutine cuda_add2s1
 
     subroutine cuda_add2s2(a_d, b_d, c1, n) &
          bind(c, name = 'cuda_add2s2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d
       real(c_rp) :: c1
       integer(c_int) :: n
     end subroutine cuda_add2s2
 
     subroutine cuda_addsqr2s2(a_d, b_d, c1, n) &
          bind(c, name = 'cuda_addsqr2s2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d
       real(c_rp) :: c1
       integer(c_int) :: n
     end subroutine cuda_addsqr2s2
 
     subroutine cuda_add3s2(a_d, b_d, c_d, c1, c2, n) &
          bind(c, name = 'cuda_add3s2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d, c_d
       real(c_rp) :: c1, c2
       integer(c_int) :: n
     end subroutine cuda_add3s2
 
     subroutine cuda_invcol1(a_d, n) &
          bind(c, name = 'cuda_invcol1')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d
       integer(c_int) :: n
     end subroutine cuda_invcol1
 
     subroutine cuda_invcol2(a_d, b_d, n) &
          bind(c, name = 'cuda_invcol2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d
       integer(c_int) :: n
     end subroutine cuda_invcol2
 
     subroutine cuda_col2(a_d, b_d, n) &
          bind(c, name = 'cuda_col2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d
       integer(c_int) :: n
     end subroutine cuda_col2
 
     subroutine cuda_col3(a_d, b_d, c_d, n) &
          bind(c, name = 'cuda_col3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d, c_d
       integer(c_int) :: n
     end subroutine cuda_col3
 
     subroutine cuda_subcol3(a_d, b_d, c_d, n) &
          bind(c, name = 'cuda_subcol3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d, c_d
       integer(c_int) :: n
     end subroutine cuda_subcol3
 
     subroutine cuda_sub2(a_d, b_d, n) &
          bind(c, name = 'cuda_sub2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d
       integer(c_int) :: n
     end subroutine cuda_sub2
 
     subroutine cuda_sub3(a_d, b_d, c_d, n) &
          bind(c, name = 'cuda_sub3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d, c_d
       integer(c_int) :: n
     end subroutine cuda_sub3
 
     subroutine cuda_add3(a_d, b_d, c_d, n) &
          bind(c, name = 'cuda_add3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d, c_d
       integer(c_int) :: n
     end subroutine cuda_add3
 
     subroutine cuda_addcol3(a_d, b_d, c_d, n) &
          bind(c, name = 'cuda_addcol3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d, c_d
       integer(c_int) :: n
     end subroutine cuda_addcol3
 
     subroutine cuda_addcol4(a_d, b_d, c_d, d_d, n) &
          bind(c, name = 'cuda_addcol4')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d, c_d, d_d
       integer(c_int) :: n
     end subroutine cuda_addcol4
 
     subroutine cuda_vdot3(dot_d, u1_d, u2_d, u3_d, v1_d, v2_d, v3_d, n) &
          bind(c, name = 'cuda_vdot3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: dot_d, u1_d, u2_d, u3_d, v1_d, v2_d, v3_d
       integer(c_int) :: n
     end subroutine cuda_vdot3
 
     subroutine cuda_vcross(u1_d, u2_d, u3_d, v1_d, v2_d, v3_d, &
          w1_d, w2_d, w3_d, n) &
          bind(c, name = 'cuda_vcross')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: u1_d, u2_d, u3_d
       type(c_ptr), value :: v1_d, v2_d, v3_d
       type(c_ptr), value :: w1_d, w2_d, w3_d
       integer(c_int) :: n
     end subroutine cuda_vcross
 
     real(c_rp) function cuda_vlsc3(u_d, v_d, w_d, n) &
          bind(c, name = 'cuda_vlsc3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: u_d, v_d, w_d
       integer(c_int) :: n
     end function cuda_vlsc3
 
     subroutine cuda_add2s2_many(y_d, x_d_d, a_d, j, n) &
          bind(c, name = 'cuda_add2s2_many')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: y_d, x_d_d, a_d
       integer(c_int) :: j, n
     end subroutine cuda_add2s2_many
 
     real(c_rp) function cuda_glsc3(a_d, b_d, c_d, n) &
          bind(c, name = 'cuda_glsc3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d, c_d
       integer(c_int) :: n
     end function cuda_glsc3
 
     subroutine cuda_glsc3_many(h, w_d, v_d_d, mult_d, j, n) &
          bind(c, name = 'cuda_glsc3_many')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: w_d, v_d_d, mult_d
       integer(c_int) :: j, n
       real(c_rp) :: h(j)
     end subroutine cuda_glsc3_many
 
     real(c_rp) function cuda_glsc2(a_d, b_d, n) &
          bind(c, name = 'cuda_glsc2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d
       integer(c_int) :: n
     end function cuda_glsc2
 
     real(c_rp) function cuda_glsum(a_d, n) &
          bind(c, name = 'cuda_glsum')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d
       integer(c_int) :: n
     end function cuda_glsum
 
     subroutine cuda_absval(a_d, n) &
          bind(c, name = 'cuda_absval')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d
       integer(c_int) :: n
     end subroutine cuda_absval
  end interface
 
  ! ========================================================================== !
  ! Interfaces for the pointwise operations.
 
  interface
     subroutine cuda_pwmax_vec2(a_d, b_d, n) &
          bind(c, name = 'cuda_pwmax_vec2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d
       integer(c_int) :: n
     end subroutine cuda_pwmax_vec2
 
     subroutine cuda_pwmax_vec3(a_d, b_d, c_d, n) &
          bind(c, name = 'cuda_pwmax_vec3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d, c_d
       integer(c_int) :: n
     end subroutine cuda_pwmax_vec3
 
     subroutine cuda_pwmax_sca2(a_d, c_d, n) &
          bind(c, name = 'cuda_pwmax_sca2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d
       real(c_rp) :: c_d
       integer(c_int) :: n
     end subroutine cuda_pwmax_sca2
 
     subroutine cuda_pwmax_sca3(a_d, b_d, c_d, n) &
          bind(c, name = 'cuda_pwmax_sca3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d
       real(c_rp) :: c_d
       integer(c_int) :: n
     end subroutine cuda_pwmax_sca3
 
     subroutine cuda_pwmin_vec2(a_d, b_d, n) &
          bind(c, name = 'cuda_pwmin_vec2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d
       integer(c_int) :: n
     end subroutine cuda_pwmin_vec2
 
     subroutine cuda_pwmin_vec3(a_d, b_d, c_d, n) &
          bind(c, name = 'cuda_pwmin_vec3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       type(c_ptr), value :: a_d, b_d, c_d
       integer(c_int) :: n
     end subroutine cuda_pwmin_vec3
 
     subroutine cuda_pwmin_sca2(a_d, c_d, n) &
          bind(c, name = 'cuda_pwmin_sca2')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d
       real(c_rp) :: c_d
       integer(c_int) :: n
     end subroutine cuda_pwmin_sca2
 
     subroutine cuda_pwmin_sca3(a_d, b_d, c_d, n) &
          bind(c, name = 'cuda_pwmin_sca3')
       use, intrinsic :: iso_c_binding, only: c_int, c_ptr
       import c_rp
       type(c_ptr), value :: a_d, b_d
       real(c_rp) :: c_d
       integer(c_int) :: n
     end subroutine cuda_pwmin_sca3
 
  end interface
end module cuda_math