1use crate::digit_table::DIGIT_TABLE;
2use core::ptr;
3
4#[cfg_attr(feature = "no-panic", inline)]
5pub unsafe fn write_exponent3(mut k: isize, mut result: *mut u8) -> usize {
6 let sign: bool = k < 0;
7 if sign {
8 *result = b'-';
9 result = result.offset(count:1);
10 k = -k;
11 }
12
13 debug_assert!(k < 1000);
14 if k >= 100 {
15 *result = b'0' + (k / 100) as u8;
16 k %= 100;
17 let d: *const u8 = DIGIT_TABLE.as_ptr().offset(count:k * 2);
18 ptr::copy_nonoverlapping(src:d, dst:result.offset(1), count:2);
19 sign as usize + 3
20 } else if k >= 10 {
21 let d: *const u8 = DIGIT_TABLE.as_ptr().offset(count:k * 2);
22 ptr::copy_nonoverlapping(src:d, dst:result, count:2);
23 sign as usize + 2
24 } else {
25 *result = b'0' + k as u8;
26 sign as usize + 1
27 }
28}
29
30#[cfg_attr(feature = "no-panic", inline)]
31pub unsafe fn write_exponent2(mut k: isize, mut result: *mut u8) -> usize {
32 let sign: bool = k < 0;
33 if sign {
34 *result = b'-';
35 result = result.offset(count:1);
36 k = -k;
37 }
38
39 debug_assert!(k < 100);
40 if k >= 10 {
41 let d: *const u8 = DIGIT_TABLE.as_ptr().offset(count:k * 2);
42 ptr::copy_nonoverlapping(src:d, dst:result, count:2);
43 sign as usize + 2
44 } else {
45 *result = b'0' + k as u8;
46 sign as usize + 1
47 }
48}
49