static char help[] = "Tests PetscAtan2Real\n";

#include <petscsys.h>
#include <petscviewer.h>
#include <petscmath.h>

int main(int argc, char **argv)
{
  PetscReal a;

  PetscFunctionBeginUser;
  PetscCall(PetscInitialize(&argc, &argv, NULL, help));
  a = PetscAtan2Real(1.0, 1.0);
  PetscCall(PetscPrintf(PETSC_COMM_WORLD, "PetscAtan2Real(1.0,1.0) = %g\n", (double)a));
  a = PetscAtan2Real(1.0, 0.0);
  PetscCall(PetscPrintf(PETSC_COMM_WORLD, "PetscAtan2Real(1.0,0.0) = %g\n", (double)a));
  a = PetscAtan2Real(0.0, 1.0);
  PetscCall(PetscPrintf(PETSC_COMM_WORLD, "PetscAtan2Real(0.0,1.0) = %g\n", (double)a));
  a = PetscAtan2Real(0.0, 0.0);
  PetscCall(PetscPrintf(PETSC_COMM_WORLD, "PetscAtan2Real(0.0,0.0) = %g\n", (double)a));
  PetscCall(PetscFinalize());
  return 0;
}

/*TEST

   test:

TEST*/