warp.isnan# warp.isnan(a: Float) → bool# Kernel Check if a is NaN. warp.isnan(a: Vector[Float, Any]) → bool Kernel Check if any element of a is NaN. warp.isnan(a: Quaternion[Float]) → bool Kernel Check if any element of a is NaN. warp.isnan(a: Matrix[Float, Any, Any]) → bool Kernel Check if any element of a is NaN.