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-rw-r--r--src/calculus.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/calculus.rs b/src/calculus.rs
index 2e8a1d5..e59ae56 100644
--- a/src/calculus.rs
+++ b/src/calculus.rs
@@ -91,7 +91,7 @@ pub mod calculus {
pub fn cross_prod(&self, other: &Self) -> Self {
Self {
- x: self.y * other.z - self.z - other.y,
+ x: self.y * other.z - self.z * other.y,
y: self.z * other.x - self.x * other.z,
z: self.x * other.y - self.y * other.x,
}