RE: [patch ping] Test gfortran -ff2c COMPLEX function return values

["Billinghurst, David \(CALCRTS\)" <david dot billinghurst at comalco dot riotinto dot com dot au>]

> From: Steven Bosscher
> 
> On Jun 20, 2005 08:51 AM, "Billinghurst, David (CALCRTS)" 
> <david.billinghurst@comalco.riotinto.com.au> wrote:
> 
> > This tests gfortran calling conventions for complex functions
> > with -ff2c (or I could add this to existing test f2c_4.{f90,c})
> > 
> > http://gcc.gnu.org/ml/gcc-patches/2005-06/msg00428.html
> 
> Wow, nice.  I hadn't notice this patch before.  Go for it if 
> this works,
> we should have more tests like this!
> 

I ended up adding this to an existing case.  This is what I committed.

2005-06-23  David Billinghurst  <David.Billinghurst@riotinto.com>

	* gfortran.dg/f2c_4.f90:  Add tests for complex functions
	* gfortran.dg/f2c_4.c: Likewise

RCS file: /cvs/gcc/gcc/gcc/testsuite/gfortran.dg/f2c_4.f90,v
retrieving revision 1.1
diff -u -r1.1 f2c_4.f90
--- f2c_4.f90   5 Jun 2005 23:42:19 -0000       1.1
+++ f2c_4.f90   23 Jun 2005 02:58:54 -0000
@@ -4,11 +4,55 @@
 
 ! Check -ff2c calling conventions
 !   Return value of REAL function is promoted to C type double
-!   Addional underscore appended to function name  
-call f2c_4a()
+!   Return value of COMPLEX function is via an extra argument in the
+!    calling sequence that points to where to store the return value
+!   Addional underscore appended to function name
+program f2c_4
+  complex c, f2c_4k, f2c_4l
+  double complex z, f2c_4m, f2c_4n
+  integer i
+
+  ! Promotion of REAL function
+  call f2c_4a()
+
+  ! Return COMPLEX arg - call Fortran routines from C
+  call f2c_4c()
+  call f2c_4e()
+  call f2c_4g()
+  call f2c_4i()
+
+  !  Return COMPLEX arg - call C routines from Fortran 
+  c = cmplx(1234.0,5678.0)
+  z = dcmplx(1234.0d0,5678.0d0)
+  if ( c .ne. f2c_4k(c) )   call abort
+  if ( c .ne. f2c_4l(i,c) ) call abort
+  if ( z .ne. f2c_4m(z) )   call abort
+  if ( z .ne. f2c_4n(i,z) ) call abort
+
 end
 
 real function f2c_4b(x)
   double precision x
   f2c_4b = x
 end
+
+complex function f2c_4d(x)
+  complex x
+  f2c_4d = x
+end
+
+complex function f2c_4f(i,x)
+  complex x
+  integer i
+  f2c_4f = x
+end
+
+double complex function f2c_4h(x)
+  double complex x
+  f2c_4h = x
+end
+
+double complex function f2c_4j(i,x)
+  double complex x
+  f2c_4j = x
+end

RCS file: /cvs/gcc/gcc/gcc/testsuite/gfortran.dg/f2c_4.f90,v
retrieving revision 1.1
diff -u -r1.1 f2c_4.f90
--- f2c_4.f90   5 Jun 2005 23:42:19 -0000       1.1
+++ f2c_4.f90   23 Jun 2005 02:44:12 -0000
@@ -4,11 +4,55 @@
 
 ! Check -ff2c calling conventions
 !   Return value of REAL function is promoted to C type double
-!   Addional underscore appended to function name  
-call f2c_4a()
+!   Return value of COMPLEX function is via an extra argument in the
+!    calling sequence that points to where to store the return value
+!   Addional underscore appended to function name
+program f2c_4
+  complex c, f2c_4k, f2c_4l
+  double complex z, f2c_4m, f2c_4n
+  integer i
+
+  ! Promotion of REAL function
+  call f2c_4a()
+
+  ! Return COMPLEX arg - call Fortran routines from C
+  call f2c_4c()
+  call f2c_4e()
+  call f2c_4g()
+  call f2c_4i()
+
+  !  Return COMPLEX arg - call C routines from Fortran 
+  c = cmplx(1234.0,5678.0)
+  z = dcmplx(1234.0d0,5678.0d0)
+  if ( c .ne. f2c_4k(c) )   call abort
+  if ( c .ne. f2c_4l(i,c) ) call abort
+  if ( z .ne. f2c_4m(z) )   call abort
+  if ( z .ne. f2c_4n(i,z) ) call abort
+
 end
 
 real function f2c_4b(x)
   double precision x
   f2c_4b = x
 end
+
+complex function f2c_4d(x)
+  complex x
+  f2c_4d = x
+end
+
+complex function f2c_4f(i,x)
+  complex x
+  integer i
+  f2c_4f = x
+end
+
+double complex function f2c_4h(x)
+  double complex x
+  f2c_4h = x
+end
+
+double complex function f2c_4j(i,x)
+  double complex x
+  f2c_4j = x
+end


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