author | martin.trojer@nokia.com |
Fri, 31 Jul 2009 15:01:17 +0100 | |
changeset 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
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.. highlightlang:: c |
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.. _number: |
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Number Protocol |
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=============== |
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.. cfunction:: int PyNumber_Check(PyObject *o) |
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Returns ``1`` if the object *o* provides numeric protocols, and false otherwise. |
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This function always succeeds. |
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.. cfunction:: PyObject* PyNumber_Add(PyObject *o1, PyObject *o2) |
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Returns the result of adding *o1* and *o2*, or *NULL* on failure. This is the |
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equivalent of the Python expression ``o1 + o2``. |
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.. cfunction:: PyObject* PyNumber_Subtract(PyObject *o1, PyObject *o2) |
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Returns the result of subtracting *o2* from *o1*, or *NULL* on failure. This is |
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the equivalent of the Python expression ``o1 - o2``. |
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.. cfunction:: PyObject* PyNumber_Multiply(PyObject *o1, PyObject *o2) |
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Returns the result of multiplying *o1* and *o2*, or *NULL* on failure. This is |
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the equivalent of the Python expression ``o1 * o2``. |
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.. cfunction:: PyObject* PyNumber_Divide(PyObject *o1, PyObject *o2) |
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Returns the result of dividing *o1* by *o2*, or *NULL* on failure. This is the |
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equivalent of the Python expression ``o1 / o2``. |
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.. cfunction:: PyObject* PyNumber_FloorDivide(PyObject *o1, PyObject *o2) |
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Return the floor of *o1* divided by *o2*, or *NULL* on failure. This is |
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equivalent to the "classic" division of integers. |
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.. versionadded:: 2.2 |
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.. cfunction:: PyObject* PyNumber_TrueDivide(PyObject *o1, PyObject *o2) |
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Return a reasonable approximation for the mathematical value of *o1* divided by |
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*o2*, or *NULL* on failure. The return value is "approximate" because binary |
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floating point numbers are approximate; it is not possible to represent all real |
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numbers in base two. This function can return a floating point value when |
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passed two integers. |
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.. versionadded:: 2.2 |
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.. cfunction:: PyObject* PyNumber_Remainder(PyObject *o1, PyObject *o2) |
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Returns the remainder of dividing *o1* by *o2*, or *NULL* on failure. This is |
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the equivalent of the Python expression ``o1 % o2``. |
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.. cfunction:: PyObject* PyNumber_Divmod(PyObject *o1, PyObject *o2) |
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.. index:: builtin: divmod |
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See the built-in function :func:`divmod`. Returns *NULL* on failure. This is |
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the equivalent of the Python expression ``divmod(o1, o2)``. |
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.. cfunction:: PyObject* PyNumber_Power(PyObject *o1, PyObject *o2, PyObject *o3) |
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.. index:: builtin: pow |
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See the built-in function :func:`pow`. Returns *NULL* on failure. This is the |
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equivalent of the Python expression ``pow(o1, o2, o3)``, where *o3* is optional. |
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If *o3* is to be ignored, pass :cdata:`Py_None` in its place (passing *NULL* for |
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*o3* would cause an illegal memory access). |
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.. cfunction:: PyObject* PyNumber_Negative(PyObject *o) |
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Returns the negation of *o* on success, or *NULL* on failure. This is the |
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equivalent of the Python expression ``-o``. |
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.. cfunction:: PyObject* PyNumber_Positive(PyObject *o) |
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Returns *o* on success, or *NULL* on failure. This is the equivalent of the |
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Python expression ``+o``. |
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.. cfunction:: PyObject* PyNumber_Absolute(PyObject *o) |
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.. index:: builtin: abs |
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Returns the absolute value of *o*, or *NULL* on failure. This is the equivalent |
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of the Python expression ``abs(o)``. |
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.. cfunction:: PyObject* PyNumber_Invert(PyObject *o) |
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Returns the bitwise negation of *o* on success, or *NULL* on failure. This is |
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the equivalent of the Python expression ``~o``. |
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108 |
.. cfunction:: PyObject* PyNumber_Lshift(PyObject *o1, PyObject *o2) |
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|
109 |
|
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|
110 |
Returns the result of left shifting *o1* by *o2* on success, or *NULL* on |
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|
111 |
failure. This is the equivalent of the Python expression ``o1 << o2``. |
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|
112 |
|
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|
113 |
|
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114 |
.. cfunction:: PyObject* PyNumber_Rshift(PyObject *o1, PyObject *o2) |
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|
115 |
|
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116 |
Returns the result of right shifting *o1* by *o2* on success, or *NULL* on |
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|
117 |
failure. This is the equivalent of the Python expression ``o1 >> o2``. |
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|
118 |
|
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|
119 |
|
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120 |
.. cfunction:: PyObject* PyNumber_And(PyObject *o1, PyObject *o2) |
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121 |
|
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122 |
Returns the "bitwise and" of *o1* and *o2* on success and *NULL* on failure. |
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123 |
This is the equivalent of the Python expression ``o1 & o2``. |
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|
124 |
|
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|
125 |
|
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126 |
.. cfunction:: PyObject* PyNumber_Xor(PyObject *o1, PyObject *o2) |
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127 |
|
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128 |
Returns the "bitwise exclusive or" of *o1* by *o2* on success, or *NULL* on |
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129 |
failure. This is the equivalent of the Python expression ``o1 ^ o2``. |
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|
130 |
|
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|
131 |
|
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132 |
.. cfunction:: PyObject* PyNumber_Or(PyObject *o1, PyObject *o2) |
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|
133 |
|
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134 |
Returns the "bitwise or" of *o1* and *o2* on success, or *NULL* on failure. |
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135 |
This is the equivalent of the Python expression ``o1 | o2``. |
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|
136 |
|
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|
137 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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138 |
.. cfunction:: PyObject* PyNumber_InPlaceAdd(PyObject *o1, PyObject *o2) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
139 |
|
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140 |
Returns the result of adding *o1* and *o2*, or *NULL* on failure. The operation |
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|
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is done *in-place* when *o1* supports it. This is the equivalent of the Python |
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|
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statement ``o1 += o2``. |
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|
143 |
|
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|
144 |
|
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145 |
.. cfunction:: PyObject* PyNumber_InPlaceSubtract(PyObject *o1, PyObject *o2) |
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|
146 |
|
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|
147 |
Returns the result of subtracting *o2* from *o1*, or *NULL* on failure. The |
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|
148 |
operation is done *in-place* when *o1* supports it. This is the equivalent of |
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|
149 |
the Python statement ``o1 -= o2``. |
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|
150 |
|
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|
151 |
|
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|
152 |
.. cfunction:: PyObject* PyNumber_InPlaceMultiply(PyObject *o1, PyObject *o2) |
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|
153 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
154 |
Returns the result of multiplying *o1* and *o2*, or *NULL* on failure. The |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
155 |
operation is done *in-place* when *o1* supports it. This is the equivalent of |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
156 |
the Python statement ``o1 *= o2``. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
157 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
158 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
159 |
.. cfunction:: PyObject* PyNumber_InPlaceDivide(PyObject *o1, PyObject *o2) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
160 |
|
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|
161 |
Returns the result of dividing *o1* by *o2*, or *NULL* on failure. The |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
162 |
operation is done *in-place* when *o1* supports it. This is the equivalent of |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
163 |
the Python statement ``o1 /= o2``. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
164 |
|
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|
165 |
|
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|
166 |
.. cfunction:: PyObject* PyNumber_InPlaceFloorDivide(PyObject *o1, PyObject *o2) |
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|
167 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
168 |
Returns the mathematical floor of dividing *o1* by *o2*, or *NULL* on failure. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
169 |
The operation is done *in-place* when *o1* supports it. This is the equivalent |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
170 |
of the Python statement ``o1 //= o2``. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
171 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
172 |
.. versionadded:: 2.2 |
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|
173 |
|
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|
174 |
|
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|
175 |
.. cfunction:: PyObject* PyNumber_InPlaceTrueDivide(PyObject *o1, PyObject *o2) |
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|
176 |
|
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|
177 |
Return a reasonable approximation for the mathematical value of *o1* divided by |
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|
178 |
*o2*, or *NULL* on failure. The return value is "approximate" because binary |
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|
179 |
floating point numbers are approximate; it is not possible to represent all real |
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|
180 |
numbers in base two. This function can return a floating point value when |
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|
181 |
passed two integers. The operation is done *in-place* when *o1* supports it. |
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|
182 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
183 |
.. versionadded:: 2.2 |
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|
184 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
185 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
186 |
.. cfunction:: PyObject* PyNumber_InPlaceRemainder(PyObject *o1, PyObject *o2) |
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|
187 |
|
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|
188 |
Returns the remainder of dividing *o1* by *o2*, or *NULL* on failure. The |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
189 |
operation is done *in-place* when *o1* supports it. This is the equivalent of |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
190 |
the Python statement ``o1 %= o2``. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
191 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
192 |
|
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|
193 |
.. cfunction:: PyObject* PyNumber_InPlacePower(PyObject *o1, PyObject *o2, PyObject *o3) |
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|
194 |
|
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|
195 |
.. index:: builtin: pow |
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|
196 |
|
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|
197 |
See the built-in function :func:`pow`. Returns *NULL* on failure. The operation |
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|
198 |
is done *in-place* when *o1* supports it. This is the equivalent of the Python |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
199 |
statement ``o1 **= o2`` when o3 is :cdata:`Py_None`, or an in-place variant of |
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|
200 |
``pow(o1, o2, o3)`` otherwise. If *o3* is to be ignored, pass :cdata:`Py_None` |
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|
201 |
in its place (passing *NULL* for *o3* would cause an illegal memory access). |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
202 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
203 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
204 |
.. cfunction:: PyObject* PyNumber_InPlaceLshift(PyObject *o1, PyObject *o2) |
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|
205 |
|
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|
206 |
Returns the result of left shifting *o1* by *o2* on success, or *NULL* on |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
207 |
failure. The operation is done *in-place* when *o1* supports it. This is the |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
208 |
equivalent of the Python statement ``o1 <<= o2``. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
209 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
210 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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.. cfunction:: PyObject* PyNumber_InPlaceRshift(PyObject *o1, PyObject *o2) |
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Returns the result of right shifting *o1* by *o2* on success, or *NULL* on |
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failure. The operation is done *in-place* when *o1* supports it. This is the |
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equivalent of the Python statement ``o1 >>= o2``. |
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.. cfunction:: PyObject* PyNumber_InPlaceAnd(PyObject *o1, PyObject *o2) |
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Returns the "bitwise and" of *o1* and *o2* on success and *NULL* on failure. The |
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operation is done *in-place* when *o1* supports it. This is the equivalent of |
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the Python statement ``o1 &= o2``. |
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.. cfunction:: PyObject* PyNumber_InPlaceXor(PyObject *o1, PyObject *o2) |
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Returns the "bitwise exclusive or" of *o1* by *o2* on success, or *NULL* on |
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failure. The operation is done *in-place* when *o1* supports it. This is the |
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equivalent of the Python statement ``o1 ^= o2``. |
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.. cfunction:: PyObject* PyNumber_InPlaceOr(PyObject *o1, PyObject *o2) |
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Returns the "bitwise or" of *o1* and *o2* on success, or *NULL* on failure. The |
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operation is done *in-place* when *o1* supports it. This is the equivalent of |
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the Python statement ``o1 |= o2``. |
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.. cfunction:: int PyNumber_Coerce(PyObject **p1, PyObject **p2) |
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.. index:: builtin: coerce |
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This function takes the addresses of two variables of type :ctype:`PyObject\*`. |
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If the objects pointed to by ``*p1`` and ``*p2`` have the same type, increment |
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their reference count and return ``0`` (success). If the objects can be |
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converted to a common numeric type, replace ``*p1`` and ``*p2`` by their |
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converted value (with 'new' reference counts), and return ``0``. If no |
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conversion is possible, or if some other error occurs, return ``-1`` (failure) |
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and don't increment the reference counts. The call ``PyNumber_Coerce(&o1, |
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&o2)`` is equivalent to the Python statement ``o1, o2 = coerce(o1, o2)``. |
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.. cfunction:: int PyNumber_CoerceEx(PyObject **p1, PyObject **p2) |
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This function is similar to :cfunc:`PyNumber_Coerce`, except that it returns |
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``1`` when the conversion is not possible and when no error is raised. |
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Reference counts are still not increased in this case. |
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.. cfunction:: PyObject* PyNumber_Int(PyObject *o) |
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.. index:: builtin: int |
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Returns the *o* converted to an integer object on success, or *NULL* on failure. |
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If the argument is outside the integer range a long object will be returned |
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instead. This is the equivalent of the Python expression ``int(o)``. |
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.. cfunction:: PyObject* PyNumber_Long(PyObject *o) |
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.. index:: builtin: long |
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Returns the *o* converted to a long integer object on success, or *NULL* on |
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failure. This is the equivalent of the Python expression ``long(o)``. |
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.. cfunction:: PyObject* PyNumber_Float(PyObject *o) |
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.. index:: builtin: float |
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Returns the *o* converted to a float object on success, or *NULL* on failure. |
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This is the equivalent of the Python expression ``float(o)``. |
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.. cfunction:: PyObject* PyNumber_Index(PyObject *o) |
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Returns the *o* converted to a Python int or long on success or *NULL* with a |
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:exc:`TypeError` exception raised on failure. |
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.. versionadded:: 2.5 |
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.. cfunction:: PyObject* PyNumber_ToBase(PyObject *n, int base) |
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Returns the the integer *n* converted to *base* as a string with a base |
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marker of ``'0b'``, ``'0o'``, or ``'0x'`` if appended applicable. When |
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*base* is not 2, 8, 10, or 16, the format is ``'x#num'`` where x is the |
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base. If *n* is not an int object, it is converted with |
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:cfunc:`PyNumber_Index` first. |
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.. versionadded:: 2.6 |
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.. cfunction:: Py_ssize_t PyNumber_AsSsize_t(PyObject *o, PyObject *exc) |
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Returns *o* converted to a Py_ssize_t value if *o* can be interpreted as an |
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integer. If *o* can be converted to a Python int or long but the attempt to |
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convert to a Py_ssize_t value would raise an :exc:`OverflowError`, then the |
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*exc* argument is the type of exception that will be raised (usually |
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:exc:`IndexError` or :exc:`OverflowError`). If *exc* is *NULL*, then the |
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exception is cleared and the value is clipped to *PY_SSIZE_T_MIN* for a negative |
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integer or *PY_SSIZE_T_MAX* for a positive integer. |
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.. versionadded:: 2.5 |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
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changeset
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317 |
.. cfunction:: int PyIndex_Check(PyObject *o) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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318 |
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2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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changeset
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319 |
Returns True if *o* is an index integer (has the nb_index slot of the |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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changeset
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320 |
tp_as_number structure filled in). |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
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321 |
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2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
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.. versionadded:: 2.5 |