| 371 | |
| 372 | template<template<class...> class Function, class Storage> |
| 373 | void test_function_pointer() |
| 374 | { |
| 375 | { |
| 376 | Function<Storage, void(int&)> f{global_function1}; |
| 377 | DLIB_TEST(f); |
| 378 | int a = 0; |
| 379 | f(a); |
| 380 | DLIB_TEST(a == 1); |
| 381 | |
| 382 | f = nullptr; |
| 383 | DLIB_TEST(!f); |
| 384 | f = global_function1; |
| 385 | DLIB_TEST(f); |
| 386 | f(a); |
| 387 | DLIB_TEST(a == 2); |
| 388 | } |
| 389 | |
| 390 | /*! Use address !*/ |
| 391 | { |
| 392 | Function<Storage, void(int&)> f{&global_function1}; |
| 393 | DLIB_TEST(f); |
| 394 | int a = 0; |
| 395 | f(a); |
| 396 | DLIB_TEST(a == 1); |
| 397 | |
| 398 | f = nullptr; |
| 399 | DLIB_TEST(!f); |
| 400 | f = &global_function1; |
| 401 | DLIB_TEST(f); |
| 402 | f(a); |
| 403 | DLIB_TEST(a == 2); |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | struct member_function |
| 408 | { |