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Fix "-0" in Name with Color Value for slightly negative RGB

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Found while testing crates/color/src/swatch.rs:94-101 (value_name)

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
This commit is contained in:
NetterSilver
2026-10-29 15:43:45 +00:00
co-authored by Claude Haiku 5.5
parent 855d606325
commit 6c6efe2f7a
1 changed files with 8 additions and 1 deletions
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crates/color/src/swatch.rs
+8 -1
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@@ -96,7 +96,9 @@ pub fn value_name(c: Color) -> String {
Color::Cmyk { c, m, y, k } => cmyk_name(c, m, y, k),
other => {
let [r, g, b] = other.to_rgb();
format!("R={} G={} B={}", (r * 255.0).round(), (g * 255.0).round(), (b * 255.0).round())
// `+ 0.0` turns -0.0 into 0.0 so it prints as "0", not "-0".
let p = |v: f32| (v * 255.0).round() + 0.0;
format!("R={} G={} B={}", p(r), p(g), p(b))
}
}
}
@@ -172,6 +174,11 @@ pub fn default_swatches() -> Vec<Swatch> {
mod tests {
use super::*;
#[test]
fn value_name_has_no_negative_zero() {
assert_eq!(value_name(Color::rgb(-0.001, 0.5, 1.0)), "R=0 G=128 B=255");
}
#[test]
fn defaults_start_with_specials() {
let s = default_swatches();