bigdecimal/
impl_ops_div.rs

1//! Implement division
2
3use super::*;
4
5impl Div<BigDecimal> for BigDecimal {
6    type Output = BigDecimal;
7    #[inline]
8    fn div(self, other: BigDecimal) -> BigDecimal {
9        if other.is_zero() {
10            panic!("Division by zero");
11        }
12        if self.is_zero() || other.is_one_quickcheck() == Some(true) {
13            return self;
14        }
15
16        let scale = self.scale - other.scale;
17
18        if self.int_val == other.int_val {
19            return BigDecimal {
20                int_val: 1.into(),
21                scale: scale,
22            };
23        }
24
25        let max_precision = DEFAULT_PRECISION;
26
27        return impl_division(self.int_val, &other.int_val, scale, max_precision);
28    }
29}
30
31impl<'a> Div<&'a BigDecimal> for BigDecimal {
32    type Output = BigDecimal;
33    #[inline]
34    fn div(self, other: &'a BigDecimal) -> BigDecimal {
35        if other.is_zero() {
36            panic!("Division by zero");
37        }
38        if self.is_zero() || other.is_one_quickcheck() == Some(true) {
39            return self;
40        }
41
42        let scale = self.scale - other.scale;
43
44        if self.int_val == other.int_val {
45            return BigDecimal {
46                int_val: 1.into(),
47                scale: scale,
48            };
49        }
50
51        let max_precision = DEFAULT_PRECISION;
52
53        return impl_division(self.int_val, &other.int_val, scale, max_precision);
54    }
55}
56
57forward_ref_val_binop!(impl Div for BigDecimal, div);
58
59impl Div<&BigDecimal> for &BigDecimal {
60    type Output = BigDecimal;
61
62    #[inline]
63    fn div(self, other: &BigDecimal) -> BigDecimal {
64        if other.is_zero() {
65            panic!("Division by zero");
66        }
67        // TODO: Fix setting scale
68        if self.is_zero() || other.is_one_quickcheck() == Some(true) {
69            return self.clone();
70        }
71
72        let scale = self.scale - other.scale;
73
74        let num_int = &self.int_val;
75        let den_int = &other.int_val;
76
77        if num_int == den_int {
78            return BigDecimal {
79                int_val: 1.into(),
80                scale: scale,
81            };
82        }
83
84        let max_precision = DEFAULT_PRECISION;
85
86        return impl_division(num_int.clone(), den_int, scale, max_precision);
87    }
88}
89
90// tests in lib.tests.ops.div.rs
bigdecimal/impl_ops_div.rs

bigdecimal/
impl_ops_div.rs
