simd_sub(_:_:) Returns the difference between two quaternions. Declarationfunc simd_sub(_ p: simd_quatd, _ q: simd_quatd) -> simd_quatd See AlsoApplying arithmetic operations to quaternionssimd_add(_:_:)simd_mul(_:_:)simd_mul(_:_:)simd_mul(_:_:)exp(_:)log(_:)