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sum: use div_ceil() from std

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This commit is contained in:
Daniel Hofstetter 2024-11-20 09:13:32 +01:00
parent 28e9a88077
commit 7fb0f8a29d
1 changed files with 2 additions and 9 deletions
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11
src/uu/sum/src/sum.rs
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@ -16,13 +16,6 @@ use uucore::{format_usage, help_about, help_usage, show};
const USAGE: &str = help_usage!("sum.md");
const ABOUT: &str = help_about!("sum.md");
// This can be replaced with usize::div_ceil once it is stabilized.
// This implementation approach is optimized for when `b` is a constant,
// particularly a power of two.
const fn div_ceil(a: usize, b: usize) -> usize {
(a + b - 1) / b
}
fn bsd_sum(mut reader: Box<dyn Read>) -> (usize, u16) {
let mut buf = [0; 4096];
let mut bytes_read = 0;
@ -41,7 +34,7 @@ fn bsd_sum(mut reader: Box<dyn Read>) -> (usize, u16) {
}
// Report blocks read in terms of 1024-byte blocks.
let blocks_read = div_ceil(bytes_read, 1024);
let blocks_read = bytes_read.div_ceil(1024);
(blocks_read, checksum)
}
@ -66,7 +59,7 @@ fn sysv_sum(mut reader: Box<dyn Read>) -> (usize, u16) {
ret = (ret & 0xffff) + (ret >> 16);
// Report blocks read in terms of 512-byte blocks.
let blocks_read = div_ceil(bytes_read, 512);
let blocks_read = bytes_read.div_ceil(512);
(blocks_read, ret as u16)
}