1c4762a1bSJed Brown static char help[] = "Tests IsInf/IsNan routines.\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscsys.h> 4c4762a1bSJed Brown 5c4762a1bSJed Brown PETSC_INTERN PetscReal zero; 6c4762a1bSJed Brown PetscReal zero = 0; 7*74ac20f2SStefano Zampini PETSC_INTERN PetscReal zero2; 8*74ac20f2SStefano Zampini PetscReal zero2 = 0; 9c4762a1bSJed Brown 10c4762a1bSJed Brown #define CALL(call) do { \ 11c4762a1bSJed Brown PetscErrorCode _ierr; \ 12c4762a1bSJed Brown _ierr = PetscPrintf(PETSC_COMM_WORLD,"%-32s -> %s\n",#call,(call)?"True":"False");CHKERRQ(_ierr); \ 13c4762a1bSJed Brown } while (0); 14c4762a1bSJed Brown 15c4762a1bSJed Brown int main(int argc, char **argv) { 16c4762a1bSJed Brown 17c4762a1bSJed Brown PetscReal neg_zero = PetscRealConstant(-0.0); 18c4762a1bSJed Brown PetscReal pos_zero = PetscRealConstant(+0.0); 19c4762a1bSJed Brown PetscReal neg_one = PetscRealConstant(-1.0); 20c4762a1bSJed Brown PetscReal pos_one = PetscRealConstant(+1.0); 21c4762a1bSJed Brown PetscReal neg_inf = neg_one/zero; /* -inf */ 22c4762a1bSJed Brown PetscReal pos_inf = pos_one/zero; /* +inf */ 23*74ac20f2SStefano Zampini PetscReal x_nan = zero2/zero; /* NaN */ /* some compilers may optimize out zero/zero and set x_nan = 1! */ 24c4762a1bSJed Brown 25c4762a1bSJed Brown PetscErrorCode ierr; 26c4762a1bSJed Brown ierr = PetscInitialize(&argc,&argv,NULL,help);if (ierr) return ierr; 27c4762a1bSJed Brown 28c4762a1bSJed Brown CALL(PetscIsInfReal(neg_zero)); 29c4762a1bSJed Brown CALL(PetscIsInfReal(pos_zero)); 30c4762a1bSJed Brown CALL(PetscIsInfReal(neg_one)); 31c4762a1bSJed Brown CALL(PetscIsInfReal(pos_one)); 32c4762a1bSJed Brown CALL(PetscIsInfReal(neg_inf)); 33c4762a1bSJed Brown CALL(PetscIsInfReal(pos_inf)); 34c4762a1bSJed Brown CALL(PetscIsInfReal(x_nan)); 35c4762a1bSJed Brown 36c4762a1bSJed Brown CALL(PetscIsNanReal(neg_zero)); 37c4762a1bSJed Brown CALL(PetscIsNanReal(pos_zero)); 38c4762a1bSJed Brown CALL(PetscIsNanReal(neg_one)); 39c4762a1bSJed Brown CALL(PetscIsNanReal(pos_one)); 40c4762a1bSJed Brown CALL(PetscIsNanReal(neg_inf)); 41c4762a1bSJed Brown CALL(PetscIsNanReal(pos_inf)); 42c4762a1bSJed Brown CALL(PetscIsNanReal(x_nan)); 43c4762a1bSJed Brown 44c4762a1bSJed Brown ierr = PetscFinalize(); 45c4762a1bSJed Brown return ierr; 46c4762a1bSJed Brown } 47c4762a1bSJed Brown 48c4762a1bSJed Brown /*TEST 49c4762a1bSJed Brown 50c4762a1bSJed Brown test: 51c4762a1bSJed Brown output_file: output/ex34.out 52c4762a1bSJed Brown 53c4762a1bSJed Brown TEST*/ 54