126 lines
2 KiB
C
126 lines
2 KiB
C
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#include <Python.h>
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#include "math.h"
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const double PI = 3.141592653589793238462643383279502884;
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static double
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_multivariate_typical(int n, double *args)
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{
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return cos(args[1] * args[0] - args[2] * sin(args[0])) / PI;
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}
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static double
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_multivariate_indefinite(int n, double *args)
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{
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return -exp(-args[0]) * log(args[0]);
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}
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static double
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_multivariate_sin(int n, double *args)
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{
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return sin(args[0]);
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}
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static double
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_sin_0(double x, void *user_data)
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{
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return sin(x);
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}
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static double
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_sin_1(int ndim, double *x, void *user_data)
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{
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return sin(x[0]);
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}
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static double
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_sin_2(double x)
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{
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return sin(x);
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}
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static double
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_sin_3(int ndim, double *x)
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{
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return sin(x[0]);
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}
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typedef struct {
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char *name;
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void *ptr;
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} routine_t;
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static const routine_t routines[] = {
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{"_multivariate_typical", &_multivariate_typical},
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{"_multivariate_indefinite", &_multivariate_indefinite},
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{"_multivariate_sin", &_multivariate_sin},
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{"_sin_0", &_sin_0},
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{"_sin_1", &_sin_1},
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{"_sin_2", &_sin_2},
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{"_sin_3", &_sin_3}
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};
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static int create_pointers(PyObject *module)
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{
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PyObject *d, *obj = NULL;
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int i;
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d = PyModule_GetDict(module);
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if (d == NULL) {
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goto fail;
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}
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for (i = 0; i < sizeof(routines) / sizeof(routine_t); ++i) {
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obj = PyLong_FromVoidPtr(routines[i].ptr);
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if (obj == NULL) {
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goto fail;
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}
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if (PyDict_SetItemString(d, routines[i].name, obj)) {
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goto fail;
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}
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Py_DECREF(obj);
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obj = NULL;
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}
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Py_XDECREF(obj);
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return 0;
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fail:
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Py_XDECREF(obj);
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return -1;
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}
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static struct PyModuleDef moduledef = {
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PyModuleDef_HEAD_INIT,
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"_test_multivariate",
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NULL,
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-1,
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NULL, /* Empty methods section */
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NULL,
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NULL,
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NULL,
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NULL
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};
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PyMODINIT_FUNC
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PyInit__test_multivariate(void)
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{
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PyObject *m;
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m = PyModule_Create(&moduledef);
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if (m == NULL) {
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return NULL;
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}
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if (create_pointers(m)) {
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Py_DECREF(m);
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return NULL;
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}
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return m;
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}
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