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math: add round #59

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Merged
mertcandav merged 1 commit into from
Jun 4, 2026
Merged

math: add round #59

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6 changes: 6 additions & 0 deletions math/round.jule
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Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
fn Round(n: f64): f64 {
if n >= 0 {
return f64(int(n + 0.5))
}
return f64(int(n - 0.5))
}
18 changes: 18 additions & 0 deletions math/round_test.jule
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Original file line number Diff line number Diff line change
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#build test

use "std/testing"

#test
fn testRound(t: &testing::T) {
t.Assert(Round(12.2) == 12, "12.2 should round to 12")
t.Assert(Round(12.5) == 13, "12.5 should round to 13")
t.Assert(Round(12.8) == 13, "12.8 should round to 13")
t.Assert(Round(12.0) == 12, "12.0 should round to 12")
t.Assert(Round(-12.2) == -12, "-12.2 should round to -12")
t.Assert(Round(-12.5) == -13, "-12.5 should round to -13")
t.Assert(Round(-12.8) == -13, "-12.8 should round to -13")
t.Assert(Round(0.49) == 0, "0.49 should round to 0")
t.Assert(Round(0.5) == 1, "0.5 should round to 1")
t.Assert(Round(-0.49) == 0, "-0.49 should round to 0")
t.Assert(Round(-0.5) == -1, "-0.5 should round to -1")
}
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