binary_helper/
lib.rs

1pub fn dec2binaryfluff(mut decimal:i128, length:i32) -> String {
2
3    let mut ret = "".to_string();
4
5    if decimal == 0 {
6        return decimal.to_string();
7    } else {
8        let mut bits = String::new();
9
10        while decimal > 0 {
11            if decimal % 2 == 0 {
12                bits.push_str("0");
13            } else {
14                bits.push_str("1");
15            }
16
17            decimal /= 2;
18        }
19
20        ret = bits.chars().rev().collect::<String>().parse::<String>().unwrap();
21    }
22
23    let mut fluff = "".to_string();
24    for _ in ret.len()..length as usize {
25        fluff.push_str("0")
26    }
27
28    let ret_final = format!("{}{}", fluff, ret.to_string());
29    ret_final.to_string()
30}
31
32pub fn dec2binary(mut decimal:i128) -> String {
33
34    let mut ret = "".to_string();
35
36    if decimal == 0 {
37        return decimal.to_string();
38    } else {
39        let mut bits = String::new();
40
41        while decimal > 0 {
42            if decimal % 2 == 0 {
43                bits.push_str("0");
44            } else {
45                bits.push_str("1");
46            }
47
48            decimal /= 2;
49        }
50
51        ret = bits.chars().rev().collect::<String>().parse::<String>().unwrap();
52    }
53
54    ret.to_string()
55}
56
57pub fn binary_str2dec(mut bin:String) -> i128 {
58    let mut decimal:i128 = 0 as i128;
59    for char in 0..bin.chars().count(){
60        if bin.as_bytes()[char] as char == '1'{
61            let expo:f64 = (bin.chars().count() - char - 1) as f64;
62            decimal += (2 as f64).powi(expo as f64 as i32) as i128;
63        }
64    }
65    return decimal as i128;
66}
67
68pub fn binary_str2dec_str(mut bin:String) -> String {
69    let mut decimal:i128 = 0 as i128;
70    for char in 0..bin.chars().count(){
71        if bin.as_bytes()[char] as char == '1'{
72            let expo:f64 = (bin.chars().count() - char - 1) as f64;
73            decimal += (2 as f64).powi(expo as f64 as i32) as i128;
74        }
75    }
76    return decimal.to_string();
77}
78
79
80#[cfg(test)]
81mod tests {
82    use super::*;
83
84    #[test]
85    fn str_2_dec() {
86        let result = binary_str2dec("101".to_string());
87        assert_eq!(result, 5);
88    }
89
90    #[test]
91    fn str_2_dec_str() {
92        let result = binary_str2dec_str("111001010100111101000111011100111101110001001000000001111111".to_string());
93        assert_eq!(result, "1032719007549259903");
94    }
95
96    #[test]
97    fn dec_2_binary_string_fluff() {
98        let result = dec2binaryfluff(10,7);
99        assert_eq!(result, "0001010");
100    }
101
102    #[test]
103    fn dec_2_binary_string() {
104        let result = dec2binary(10);
105        assert_eq!(result, "1010");
106    }
107
108}
109
110
111
binary_helper/lib.rs

binary_helper/
lib.rs
