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Merge rust-bitcoin/rust-bitcoin#1713: Swap out `Work::log2` implementation for `U256::to_f64` 

4924148dc6 Swap out `Work::log2` implementation for `U256::to_f64` (junderw)

Pull request description:

  See: https://github.com/rust-bitcoin/rust-bitcoin/pull/1707#issuecomment-1464052971

ACKs for top commit:
  Kixunil:
    ACK 4924148dc6
  apoelstra:
    ACK 4924148dc6

Tree-SHA512: 39d5d10b65c9597df1103df1639c57d432f04798b4b2be990b59275b8bd1f08560f72db8cda9edafad202ed0e4bf16cef7798279841b2d713ed482855498d1fe
This commit is contained in:
Andrew Poelstra 2023-03-18 22:11:41 +00:00
parent 51251557ad 4924148dc6
commit 35cff6a2ef
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1 changed files with 1 additions and 6 deletions
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7
bitcoin/src/pow.rs
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@ -92,12 +92,7 @@ impl Work {
/// `log2_work` output in its logs. /// `log2_work` output in its logs.
#[cfg(feature = "std")] #[cfg(feature = "std")]
#[cfg_attr(docsrs, doc(cfg(feature = "std")))] #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
pub fn log2(self) -> f64 { pub fn log2(self) -> f64 { self.0.to_f64().log2() }
let U256(high, low) = self.0;
// 2^128 * high + low
let double = (3402823669209385e23_f64 * high as f64) + (low as f64);
double.log2()
}
} }
do_impl!(Work); do_impl!(Work);