Functions

NAME wyzer-functions - Function definitions and FFI bindings

DESCRIPTION Wyzer functions require explicit type signatures for parameters and returns. External functions can be bound using the extern keyword.

SYNOPSIS: DEFINITION

pub fn multiply(a: u32, b: u32) -> u32 {
    a * b
}

fn main() {
    let result = multiply(5, 10);
}

FUNCTION DETAILS

• pub: Exposes the function to other modules. Functions are private by default.
• (a: u32, b: u32): Typed parameter list.
• -> u32: Return type annotation.
• Implicit Return: The final expression in a block (without a semicolon) is returned.

SYNOPSIS: EXTERNAL (FFI)

extern "C" fn malloc(size: usize) -> *u8;

FFI DETAILS

• extern "C": Binds a function using the C Application Binary Interface (ABI).
• *u8: Raw pointer type.