这是indexloc提供的服务，不要输入任何密码
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no-std support #9

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Merged
merged 1 commit into from
Jun 7, 2024
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no-std support #9

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10 changes: 6 additions & 4 deletions src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,12 @@
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#![no_std]

extern crate dtoa;

use std::fmt::Write;
use std::{fmt, str};
use core::fmt::Write;
use core::{fmt, str};

/// Format the given `value` into `dest` and return the notation it uses.
#[inline]
Expand Down Expand Up @@ -58,11 +60,11 @@ where
let mut buf = dtoa::Buffer::new();
let str = buf.format_finite(value);

const SCRATCH_LEN: usize = std::mem::size_of::<dtoa::Buffer>() + 1;
const SCRATCH_LEN: usize = core::mem::size_of::<dtoa::Buffer>() + 1;
let mut scratch = [b'\0'; SCRATCH_LEN];
debug_assert!(str.len() < SCRATCH_LEN);
unsafe {
std::ptr::copy_nonoverlapping(str.as_bytes().as_ptr(), scratch.as_mut_ptr().offset(1), str.len());
core::ptr::copy_nonoverlapping(str.as_bytes().as_ptr(), scratch.as_mut_ptr().offset(1), str.len());
}
let (result, notation) = restrict_prec(&mut scratch[0..str.len() + 1], prec);
dest.write_str(if cfg!(debug_assertions) {
Expand Down