Generated by Cython 0.12.1 on Sun Jul 18 10:58:16 2010

Raw output: _Users_wstein__sage_sage_notebook_sagenb_home_admin_478_code_sage69_spyx_0.c

 1: 
 2: include "interrupt.pxi"  # ctrl-c interrupt block support
 3: include "stdsage.pxi"  # ctrl-c interrupt block support
 4: 
 5: include "cdefs.pxi"
 6: def trial_division_cython4(unsigned long n):
static PyObject *__pyx_pf_74_Users_wstein__sage_sage_notebook_sagenb_home_admin_478_code_sage69_spyx_0_trial_division_cython4(PyObject *__pyx_self, PyObject *__pyx_arg_n); /*proto*/
static char __pyx_doc_74_Users_wstein__sage_sage_notebook_sagenb_home_admin_478_code_sage69_spyx_0_trial_division_cython4[] = "File: _Users_wstein__sage_sage_notebook_sagenb_home_admin_478_code_sage69_spyx_0.pyx (starting at line 6)";
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  unsigned long __pyx_v_n;
  unsigned long __pyx_v_dif[8];
  unsigned long __pyx_v_m;
  unsigned long __pyx_v_i;
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  goto __pyx_L4_argument_unpacking_done;
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  __Pyx_AddTraceback("_Users_wstein__sage_sage_notebook_sagenb_home_admin_478_code_sage69_spyx_0.trial_division_cython4");
  return NULL;
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 7:     if n == 1: return 1
    __pyx_t_1 = (__pyx_v_n == 1);
  if (__pyx_t_1) {
    __Pyx_XDECREF(__pyx_r);
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    __pyx_r = __pyx_int_1;
    goto __pyx_L0;
    goto __pyx_L5;
  }
  __pyx_L5:;
 8:     cdef unsigned long p
 9:     if n%2==0: return 2
    __pyx_t_1 = ((__pyx_v_n % 2) == 0);
  if (__pyx_t_1) {
    __Pyx_XDECREF(__pyx_r);
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    goto __pyx_L0;
    goto __pyx_L6;
  }
  __pyx_L6:;
 10:     if n%3==0: return 3
    __pyx_t_1 = ((__pyx_v_n % 3) == 0);
  if (__pyx_t_1) {
    __Pyx_XDECREF(__pyx_r);
    __Pyx_INCREF(__pyx_int_3);
    __pyx_r = __pyx_int_3;
    goto __pyx_L0;
    goto __pyx_L7;
  }
  __pyx_L7:;
 11:     if n%5==0: return 5
    __pyx_t_1 = ((__pyx_v_n % 5) == 0);
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    __pyx_r = __pyx_int_5;
    goto __pyx_L0;
    goto __pyx_L8;
  }
  __pyx_L8:;
 12:     # Algorithm: only trial divide by numbers that
 13:     # are congruent to 1,7,11,13,17,29,23,29 mod 30=2*3*5.
 14:     cdef unsigned long dif[8]
 15:     dif[0]=6;dif[1]=4;dif[2]=2;dif[3]=4;dif[4]=2;dif[5]=4;dif[6]=6;dif[7]=2
    (__pyx_v_dif[0]) = 6;
  (__pyx_v_dif[1]) = 4;
  (__pyx_v_dif[2]) = 2;
  (__pyx_v_dif[3]) = 4;
  (__pyx_v_dif[4]) = 2;
  (__pyx_v_dif[5]) = 4;
  (__pyx_v_dif[6]) = 6;
  (__pyx_v_dif[7]) = 2;
 16:     cdef unsigned long m = 7, i = 1
    __pyx_v_m = 7;
  __pyx_v_i = 1;
 17:     while m*m <= n:
    while (1) {
    __pyx_t_1 = ((__pyx_v_m * __pyx_v_m) <= __pyx_v_n);
    if (!__pyx_t_1) break;
 18:         if n%m == 0: return m
        if (unlikely(__pyx_v_m == 0)) {
      PyErr_Format(PyExc_ZeroDivisionError, "integer division or modulo by zero");
      {__pyx_filename = __pyx_f[0]; __pyx_lineno = 18; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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      __pyx_t_2 = 0;
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      goto __pyx_L11;
    }
    __pyx_L11:;
 19:         m += dif[i%8]
        __pyx_v_m += (__pyx_v_dif[(__pyx_v_i % 8)]);
 20:         i += 1
        __pyx_v_i += 1;
  }
 21:     return n
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  __pyx_t_2 = PyLong_FromUnsignedLong(__pyx_v_n); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
  __Pyx_GOTREF(__pyx_t_2);
  __pyx_r = __pyx_t_2;
  __pyx_t_2 = 0;
  goto __pyx_L0;

  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
  goto __pyx_L0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_2);
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}