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module Math_integer_m
implicit none
private
public :: add_integer
contains
pure function add_integer(x, y) result(result)
integer, intent(in) :: x, y
integer :: result
result = x + y
end function
pure function minus_integer(x, y) result(result)
integer, intent(in) :: x, y
integer :: result
result = x - y
end function
pure function max_integer(x, y) result(result)
integer, intent(in) :: x, y
integer :: result
result = max(x, y)
end function
pure function min_integer(x, y) result(result)
integer, intent(in) :: x, y
integer :: result
result = min(x, y)
end function
pure function zero_integer() result(result)
integer :: result
result = 0
end function
pure function one_integer() result(result)
integer :: result
result = 1
end function
end module
module Math_real_m
implicit none
private
public :: add_real
contains
pure function add_real(x, y) result(result)
real, intent(in) :: x, y
real :: result
result = x + y
end function
pure function minus_real(x, y) result(result)
real, intent(in) :: x, y
real :: result
result = x - y
end function
pure function slash_real(x, y) result(result)
real, intent(in) :: x, y
real :: result
result = x / y
end function
pure function max_real(x, y) result(result)
real, intent(in) :: x, y
real :: result
result = max(x, y)
end function
pure function min_real(x, y) result(result)
real, intent(in) :: x, y
real :: result
result = min(x, y)
end function
pure function zero_real() result(result)
real :: result
result = 0.0
end function
pure function one_real() result(result)
real :: result
result = 1.0
end function
end module
module triple_m
implicit none
private
public :: triple_tmpl
requirement magma_r(T, plus_T)
type, deferred :: T
pure function plus_T(l, r) result(total)
type(T), intent(in) :: l, r
type(T) :: total
end function
end requirement
template triple_tmpl(T, plus_T)
require :: magma_r(T, plus_T)
private
public :: triple_l, triple_r
contains
pure function triple_l(t) result(result)
type(T), intent(in) :: t
type(T) :: result
result = plus_T(plus_T(t, t), t)
end function
pure function triple_r(t) result(result)
type(T), intent(in) :: t
type(T) :: result
result = plus_T(t, plus_T(t, t))
end function
end template
end module
module use_triple_m
use Math_integer_m
use Math_real_m
use triple_m
contains
subroutine test_add_triples()
instantiate triple_tmpl(integer, add_integer), &
only: triple_add_l => triple_l, &
triple_add_r => triple_r
integer :: tal, tar
tal = triple_add_l(7)
tar = triple_add_r(7)
print *, "tal = ", tal, " tar = ", tar
end subroutine
subroutine test_minus_triples()
instantiate triple_tmpl(real, minus_real), &
only: triple_minus_l => triple_l, &
triple_minus_r => triple_r
real :: tml, tmr
tml = triple_minus_l(7.0)
tmr = triple_minus_r(7.0)
print *, "tml = ", tml, " tmr = ", tmr
end subroutine
subroutine test_max_triples()
instantiate triple_tmpl(real, max_real), &
only: triple_max_l => triple_l, &
triple_max_r => triple_r
real :: tmaxl, tmaxr
tmaxl = triple_max_l(7.0)
tmaxr = triple_max_r(7.0)
print *, "tmaxl =", tmaxl, " tmaxr =", tmaxr
end subroutine
end module
program template_triple
use use_triple_m
call test_add_triples()
call test_minus_triples()
call test_max_triples()
end program template_triple
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