File: userdef_operator_1.f90

package info (click to toggle)
gcc-arm-none-eabi 15%3A12.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 959,712 kB
  • sloc: cpp: 3,275,382; ansic: 2,061,766; ada: 840,956; f90: 208,513; makefile: 76,132; asm: 73,433; xml: 50,448; exp: 34,146; sh: 32,436; objc: 15,637; fortran: 14,012; python: 11,991; pascal: 6,787; awk: 4,779; perl: 3,054; yacc: 338; ml: 285; lex: 201; haskell: 122
file content (34 lines) | stat: -rw-r--r-- 670 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
! { dg-do compile }
! Testcase from PR 25396: User defined operators returning arrays.
module geometry

  implicit none

  interface operator(.cross.)
     module procedure cross
  end interface

contains

    ! Cross product between two 3d vectors.
    pure function cross(a, b)
      real, dimension(3), intent(in) :: a,b
      real, dimension(3) :: cross

     cross = (/ a(2) * b(3) - a(3) * b(2), &
           a(3) * b(1) - a(1) * b(3), &
           a(1) * b(2) - a(2) * b(1) /)
    end function cross

end module geometry

program opshape
  use geometry

  implicit none

  real :: t(3,3), a

  a = dot_product (t(:,1), t(:,2) .cross. t(:,3))

end program opshape