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remove is_pwr2

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This commit is contained in:
Luuk Wester 2025-01-21 14:47:07 +01:00
parent 705eb84941
commit 5ad3de8b29
1 changed files with 3 additions and 17 deletions
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20
crates/ide/src/hover/render.rs
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@ -1083,7 +1083,7 @@ fn render_memory_layout(
if config.niches {
if let Some(niches) = layout.niches() {
if niches > 1024 {
if is_pwr2(niches) {
if niches.is_power_of_two() {
format_to!(label, "niches = 2{}, ", pwr2_to_exponent(niches));
} else if is_pwr2plus1(niches) {
format_to!(label, "niches = 2{} + 1, ", pwr2_to_exponent(niches - 1));
@ -1223,16 +1223,12 @@ fn render_dyn_compatibility(
}
}
fn is_pwr2(val: u128) -> bool {
val.is_power_of_two()
}
fn is_pwr2minus1(val: u128) -> bool {
val == u128::MAX || is_pwr2(val + 1)
val == u128::MAX || (val + 1).is_power_of_two()
}
fn is_pwr2plus1(val: u128) -> bool {
val != 0 && is_pwr2(val - 1)
val != 0 && (val - 1).is_power_of_two()
}
/// Formats a power of two as an exponent of two, i.e. 16 => ⁴. Note that `num` MUST be a power
@ -1254,16 +1250,6 @@ mod tests {
const TESTERS: [u128; 10] = [0, 1, 2, 3, 4, 255, 256, 257, u128::MAX - 1, u128::MAX];
#[test]
fn test_is_pwr2() {
const OUTCOMES: [bool; 10] =
[false, true, true, false, true, false, true, false, false, false];
for (test, expected) in TESTERS.iter().zip(OUTCOMES) {
let actual = is_pwr2(*test);
assert_eq!(actual, expected, "is_pwr2({test}) gave {actual}, expected {expected}");
}
}
#[test]
fn test_is_pwr2minus1() {
const OUTCOMES: [bool; 10] =