UfuncBase

class numpy::UfuncBase

numpy C++ class.

Example

#include <numpy/np_ndarray.h>
using namespace numpy;

// Use UfuncBase
UfuncBase obj;
// ... operations ...

Indexing / Selection

Signature	Return Type	Location	Example
std::any getIdentity()	std::any	NP_UFUNC.H:41	View

Other Methods

Signature	Return Type	Location	Example
bool hasIdentity()	bool	NP_UFUNC.H:40	View
size_t nin()	size_t	NP_UFUNC.H:38
size_t nout()	size_t	NP_UFUNC.H:39
std::string signature()	std::string	NP_UFUNC.H:42

Code Examples

The following examples are extracted from the test suite.

getIdentity (np_test_3_all.cpp:1055)

      try {
        auto mult_func = [](double a, double b) { return a * b; };
        auto ufunc_mult = numpy::frompyfunc(mult_func, 2, 1, std::any{ 1.0 });

        if (!ufunc_mult.hasIdentity()) {
          std::cout << "[FAIL] Identity value failed";
          return 1;
        }

        double identity = std::any_cast<double>(ufunc_mult.getIdentity());
        if (std::abs(identity - 1.0) > 1e-10) {
          std::cout << "[FAIL] Identity value failed";
          return 1;
        }

        // std::cout << "[OK] Identity value works correctly" << std::endl;
        std::cout << " -> tests passed" << std::endl;
        return 0;
      }
      catch (const std::exception& e) {

hasIdentity (np_test_3_all.cpp:1050)

    }

    // Test 8: Identity value
    int np_test_frompyfunc_identity_value() {
      std::cout << "========= np_test_frompyfunc_identity_value =======================";

      try {
        auto mult_func = [](double a, double b) { return a * b; };
        auto ufunc_mult = numpy::frompyfunc(mult_func, 2, 1, std::any{ 1.0 });

        if (!ufunc_mult.hasIdentity()) {
          std::cout << "[FAIL] Identity value failed";
          return 1;
        }

        double identity = std::any_cast<double>(ufunc_mult.getIdentity());
        if (std::abs(identity - 1.0) > 1e-10) {
          std::cout << "[FAIL] Identity value failed";
          return 1;
        }