Reinterpret cast in c

Question

I have some operation like this C++ code that I want to convert in C89:

return reinterpret_cast<uint8_t *>(stream.buffer) - buffer;

How can I replace the reinterpret cast in C?

`How can I replace the reinterpret cast in C` you cannot replace something that does not exist. — Sourav Ghosh, Jul 12 '16 at 12:44

score 3 · Accepted Answer · answered Jul 12 '16 at 12:36

3

Nothing very exciting, you've seen this before:

(uint8_t *)(stream.buffer)

That's the only way to cast something in C.

answered Jul 12 '16 at 12:36

Sam Varshavchik

so the reinterpret cast do really nothing more that a "classic" cast? – richerarc Jul 12 '16 at 12:36
3

Pretty much. C++ has other kinds of casts that C does not have. However it's not exactly a one-to-one match. `reinterpret_cast` does not do what a C-style cast does for casting to a subclass. – Sam Varshavchik Jul 12 '16 at 12:37

score 3 · Answer 2 · answered Jul 12 '16 at 12:37

3

You could simply use a C style cast:

(uint8_t*)stream.buffer

answered Jul 12 '16 at 12:37

Wum

2 Answers2