File: extc.sce

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//           CALLING EXTERNAL ROUTINE

foo=['void foo(double *a,double *b,double *c)';
     '{ *c = *a + *b; }'  ];

// we use TMPDIR for compilation 
	
if ~c_link('foo') then
  path = getcwd(); 
  chdir(TMPDIR); 
  mputl(foo,'foo.c');
  ilib_for_link(['foo'],'foo.o',[],"c");
  exec loader.sce 
  chdir(path) 
end	

//5+7 by C function
call('foo',5,1,'d',7,2,'d','out',[1,1],3,'d')