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Fix floating point failures seen on ppc64le #90

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Fix floating point failures seen on ppc64le #90

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8 changes: 4 additions & 4 deletions r3/vector.go
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Original file line number Diff line number Diff line change
Expand Up @@ -68,14 +68,14 @@ func (v Vector) Sub(ov Vector) Vector { return Vector{v.X - ov.X, v.Y - ov.Y, v.
func (v Vector) Mul(m float64) Vector { return Vector{m * v.X, m * v.Y, m * v.Z} }

// Dot returns the standard dot product of v and ov.
func (v Vector) Dot(ov Vector) float64 { return v.X*ov.X + v.Y*ov.Y + v.Z*ov.Z }
func (v Vector) Dot(ov Vector) float64 { return float64(v.X*ov.X) + float64(v.Y*ov.Y) + float64(v.Z*ov.Z) }

// Cross returns the standard cross product of v and ov.
func (v Vector) Cross(ov Vector) Vector {
return Vector{
v.Y*ov.Z - v.Z*ov.Y,
v.Z*ov.X - v.X*ov.Z,
v.X*ov.Y - v.Y*ov.X,
float64(v.Y*ov.Z) - float64(v.Z*ov.Y),
float64(v.Z*ov.X) - float64(v.X*ov.Z),
float64(v.X*ov.Y) - float64(v.Y*ov.X),
}
}

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