CPP to Rust need help

[h3ly]

For example in CPP I use it like this:
CUtils::memSet((void*)MAIN_ADDRESS, 0xC3, 1);
CUtils::memPut(MAIN_ADDRESS, 0x0);
CUtils::memCpy((void*)MAIN_ADDRESS, "\xC1\x90\x90\x90\x90", 5);

#define MAIN_ADDRESS 0x296E629C