diff options
Diffstat (limited to 'doc/source/reference/c-api.ufunc.rst')
| -rw-r--r-- | doc/source/reference/c-api.ufunc.rst | 108 |
1 files changed, 35 insertions, 73 deletions
diff --git a/doc/source/reference/c-api.ufunc.rst b/doc/source/reference/c-api.ufunc.rst index dc53956a2..3acc6773f 100644 --- a/doc/source/reference/c-api.ufunc.rst +++ b/doc/source/reference/c-api.ufunc.rst @@ -65,9 +65,7 @@ Macros Functions --------- -.. c:function:: PyObject* PyUFunc_FromFuncAndData(PyUFuncGenericFunction* func, - void** data, char* types, int ntypes, int nin, int nout, int identity, - char* name, char* doc, int unused) +.. c:function:: PyObject* PyUFunc_FromFuncAndData(PyUFuncGenericFunction* func, void** data, char* types, int ntypes, int nin, int nout, int identity, char* name, char* doc, int unused) Create a new broadcasting universal function from required variables. Each ufunc builds around the notion of an element-by-element @@ -124,9 +122,7 @@ Functions :param unused: Unused and present for backwards compatibility of the C-API. -.. c:function:: PyObject* PyUFunc_FromFuncAndDataAndSignature(PyUFuncGenericFunction* func, - void** data, char* types, int ntypes, int nin, int nout, int identity, - char* name, char* doc, int unused, char *signature) +.. c:function:: PyObject* PyUFunc_FromFuncAndDataAndSignature(PyUFuncGenericFunction* func, void** data, char* types, int ntypes, int nin, int nout, int identity, char* name, char* doc, int unused, char *signature) This function is very similar to PyUFunc_FromFuncAndData above, but has an extra *signature* argument, to define generalized universal functions. @@ -139,8 +135,7 @@ Functions to calling PyUFunc_FromFuncAndData. A copy of the string is made, so the passed in buffer can be freed. -.. c:function:: int PyUFunc_RegisterLoopForType(PyUFuncObject* ufunc, - int usertype, PyUFuncGenericFunction function, int* arg_types, void* data) +.. c:function:: int PyUFunc_RegisterLoopForType(PyUFuncObject* ufunc, int usertype, PyUFuncGenericFunction function, int* arg_types, void* data) This function allows the user to register a 1-d loop with an already- created ufunc to be used whenever the ufunc is called @@ -153,9 +148,7 @@ Functions in as *arg_types* which must be a pointer to memory at least as large as ufunc->nargs. -.. c:function:: int PyUFunc_RegisterLoopForDescr(PyUFuncObject* ufunc, - PyArray_Descr* userdtype, PyUFuncGenericFunction function, - PyArray_Descr** arg_dtypes, void* data) +.. c:function:: int PyUFunc_RegisterLoopForDescr(PyUFuncObject* ufunc, PyArray_Descr* userdtype, PyUFuncGenericFunction function, PyArray_Descr** arg_dtypes, void* data) This function behaves like PyUFunc_RegisterLoopForType above, except that it allows the user to register a 1-d loop using PyArray_Descr @@ -163,9 +156,7 @@ Functions registered for structured array data-dtypes and custom data-types instead of scalar data-types. -.. c:function:: int PyUFunc_ReplaceLoopBySignature(PyUFuncObject* ufunc, - PyUFuncGenericFunction newfunc, int* signature, - PyUFuncGenericFunction* oldfunc) +.. c:function:: int PyUFunc_ReplaceLoopBySignature(PyUFuncObject* ufunc, PyUFuncGenericFunction newfunc, int* signature, PyUFuncGenericFunction* oldfunc) Replace a 1-d loop matching the given *signature* in the already-created *ufunc* with the new 1-d loop newfunc. Return the @@ -175,8 +166,7 @@ Functions signature is an array of data-type numbers indicating the inputs followed by the outputs assumed by the 1-d loop. -.. c:function:: int PyUFunc_GenericFunction(PyUFuncObject* self, - PyObject* args, PyObject* kwds, PyArrayObject** mps) +.. c:function:: int PyUFunc_GenericFunction(PyUFuncObject* self, PyObject* args, PyObject* kwds, PyArrayObject** mps) A generic ufunc call. The ufunc is passed in as *self*, the arguments to the ufunc as *args* and *kwds*. The *mps* argument is an array of @@ -203,12 +193,11 @@ Functions hardware is determined a -1 is returned, otherwise a 0 is returned. -.. c:function:: void PyUFunc_clearfperr() +.. c:function:: void PyUFunc_clearfperr() Clear the IEEE error flags. -.. c:function:: void PyUFunc_GetPyValues(char* name, int* bufsize, - int* errmask, PyObject** errobj) +.. c:function:: void PyUFunc_GetPyValues(char* name, int* bufsize, int* errmask, PyObject** errobj) Get the Python values used for ufunc processing from the thread-local storage area unless the defaults have been set in @@ -235,38 +224,27 @@ of these functions are suitable for placing directly in the array of functions stored in the functions member of the PyUFuncObject structure. -.. c:function:: void PyUFunc_f_f_As_d_d(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_f_f_As_d_d(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_d_d(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_d_d(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_f_f(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_f_f(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_g_g(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_g_g(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_F_F_As_D_D(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_F_F_As_D_D(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_F_F(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_F_F(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_D_D(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_D_D(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_G_G(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_G_G(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_e_e(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_e_e(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_e_e_As_f_f(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_e_e_As_f_f(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_e_e_As_d_d(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_e_e_As_d_d(char** args, npy_intp* dimensions, npy_intp* steps, void* func) Type specific, core 1-d functions for ufuncs where each calculation is obtained by calling a function taking one input @@ -281,38 +259,27 @@ structure. ndarrays of data type :c:data:`NPY_FLOAT` but calls out to a C-function that takes double and returns double. -.. c:function:: void PyUFunc_ff_f_As_dd_d(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_ff_f_As_dd_d(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_ff_f(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_ff_f(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_dd_d(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_dd_d(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_gg_g(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_gg_g(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_FF_F_As_DD_D(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_FF_F_As_DD_D(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_DD_D(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_DD_D(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_FF_F(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_FF_F(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_GG_G(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_GG_G(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_ee_e(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_ee_e(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_ee_e_As_ff_f(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_ee_e_As_ff_f(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_ee_e_As_dd_d(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_ee_e_As_dd_d(char** args, npy_intp* dimensions, npy_intp* steps, void* func) Type specific, core 1-d functions for ufuncs where each calculation is obtained by calling a function taking two input @@ -324,11 +291,9 @@ structure. of one data type but cast the values at each iteration of the loop to use the underlying function that takes a different data type. -.. c:function:: void PyUFunc_O_O(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_O_O(char** args, npy_intp* dimensions, npy_intp* steps, void* func) -.. c:function:: void PyUFunc_OO_O(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_OO_O(char** args, npy_intp* dimensions, npy_intp* steps, void* func) One-input, one-output, and two-input, one-output core 1-d functions for the :c:data:`NPY_OBJECT` data type. These functions handle reference @@ -337,16 +302,14 @@ structure. (PyObject*)`` for :c:func:`PyUFunc_O_O` or ``(PyObject*)(PyObject *, PyObject *)`` for :c:func:`PyUFunc_OO_O`. -.. c:function:: void PyUFunc_O_O_method(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_O_O_method(char** args, npy_intp* dimensions, npy_intp* steps, void* func) This general purpose 1-d core function assumes that *func* is a string representing a method of the input object. For each iteration of the loop, the Python object is extracted from the array and its *func* method is called returning the result to the output array. -.. c:function:: void PyUFunc_OO_O_method(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_OO_O_method(char** args, npy_intp* dimensions, npy_intp* steps, void* func) This general purpose 1-d core function assumes that *func* is a string representing a method of the input object that takes one @@ -355,8 +318,7 @@ structure. function. The output of the function is stored in the third entry of *args*. -.. c:function:: void PyUFunc_On_Om(char** args, npy_intp* dimensions, - npy_intp* steps, void* func) +.. c:function:: void PyUFunc_On_Om(char** args, npy_intp* dimensions, npy_intp* steps, void* func) This is the 1-d core function used by the dynamic ufuncs created by umath.frompyfunc(function, nin, nout). In this case *func* is a |