Mercurial > cpython-lru_cache-weakref

annotate Include/complexobject.h @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 22b56b0b8619
children
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1 /* Complex number structure */
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2
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3 #ifndef Py_COMPLEXOBJECT_H
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4 #define Py_COMPLEXOBJECT_H
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5 #ifdef __cplusplus
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6 extern "C" {
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7 #endif
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8
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9 #ifndef Py_LIMITED_API
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10 typedef struct {
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11 double real;
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12 double imag;
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13 } Py_complex;
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14
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15 /* Operations on complex numbers from complexmodule.c */
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16
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17 #define c_sum _Py_c_sum
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18 #define c_diff _Py_c_diff
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19 #define c_neg _Py_c_neg
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20 #define c_prod _Py_c_prod
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21 #define c_quot _Py_c_quot
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22 #define c_pow _Py_c_pow
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23 #define c_abs _Py_c_abs
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24
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25 PyAPI_FUNC(Py_complex) c_sum(Py_complex, Py_complex);
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26 PyAPI_FUNC(Py_complex) c_diff(Py_complex, Py_complex);
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27 PyAPI_FUNC(Py_complex) c_neg(Py_complex);
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28 PyAPI_FUNC(Py_complex) c_prod(Py_complex, Py_complex);
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29 PyAPI_FUNC(Py_complex) c_quot(Py_complex, Py_complex);
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30 PyAPI_FUNC(Py_complex) c_pow(Py_complex, Py_complex);
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31 PyAPI_FUNC(double) c_abs(Py_complex);
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32 #endif
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33
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34 /* Complex object interface */
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35
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36 /*
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37 PyComplexObject represents a complex number with double-precision
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38 real and imaginary parts.
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39 */
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40 #ifndef Py_LIMITED_API
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41 typedef struct {
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42 PyObject_HEAD
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43 Py_complex cval;
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44 } PyComplexObject;
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45 #endif
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46
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47 PyAPI_DATA(PyTypeObject) PyComplex_Type;
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48
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49 #define PyComplex_Check(op) PyObject_TypeCheck(op, &PyComplex_Type)
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50 #define PyComplex_CheckExact(op) (Py_TYPE(op) == &PyComplex_Type)
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51
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52 #ifndef Py_LIMITED_API
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53 PyAPI_FUNC(PyObject *) PyComplex_FromCComplex(Py_complex);
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54 #endif
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55 PyAPI_FUNC(PyObject *) PyComplex_FromDoubles(double real, double imag);
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56
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57 PyAPI_FUNC(double) PyComplex_RealAsDouble(PyObject *op);
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58 PyAPI_FUNC(double) PyComplex_ImagAsDouble(PyObject *op);
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59 #ifndef Py_LIMITED_API
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60 PyAPI_FUNC(Py_complex) PyComplex_AsCComplex(PyObject *op);
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61 #endif
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62
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63 /* Format the object based on the format_spec, as defined in PEP 3101
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64 (Advanced String Formatting). */
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65 #ifndef Py_LIMITED_API
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66 PyAPI_FUNC(int) _PyComplex_FormatAdvancedWriter(
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67 _PyUnicodeWriter *writer,
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68 PyObject *obj,
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69 PyObject *format_spec,
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70 Py_ssize_t start,
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71 Py_ssize_t end);
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72 #endif
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73
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74 #ifdef __cplusplus
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75 }
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76 #endif
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77 #endif /* !Py_COMPLEXOBJECT_H */