gistfile1.txt

bloom.rs:6:0: 6:10 error: `use` and `extern mod` declarations must precede items
bloom.rs:6 use mumur;
           ^~~~~~~~~~
bloom.rs:7:0: 7:8 error: `use` and `extern mod` declarations must precede items
bloom.rs:7 use fnv;
           ^~~~~~~~
bloom.rs:8:0: 8:16 error: `use` and `extern mod` declarations must precede items
bloom.rs:8 use extra::bitv;
           ^~~~~~~~~~~~~~~~
bloom.rs:10:0: 10:13 error: `use` and `extern mod` declarations must precede items
bloom.rs:10 use std::f64;
            ^~~~~~~~~~~~~
bloom.rs:11:0: 11:20 error: `use` and `extern mod` declarations must precede items
bloom.rs:11 use std::num::{log};



omega:rust-bloom (101) $ tree -P "*.rs"
.
├── bloom.rs
├── fnv.rs
├── hash.rs
├── lib.rs
└── murmur.rs




extern mod extra;

pub mod murmur;
pub mod fnv;

use mumur;
use fnv;
use extra::bitv;

use std::f64;
use std::num::{log};

fn main () {
    let v  = optimalNumBits(1000, 1.0);
    println(fmt!("%?", v));

}


/**

*/
fn optimalNumBits(n: u64, p: float) -> u64 {
    // TODO: assert 0 < p < 1
    _p = match p {
        0.0 => f64::min_value,
        _ => p
    };

    ( -n * log(p) / (log(2) * log(2))) as u64
}