warp.tile\_max
==============

.. currentmodule:: warp._src.lang

.. function:: tile_max(a: Tile[Scalar, tuple[int, ...]]) -> Tile[Scalar, tuple[Literal[1]]]

   .. wp-function-tags::
      :kernel: true
      :python: false
      :differentiable: false

   Compute the maximum of all elements of a tile.
   
   This is a cooperative operation: the threads of the block divide the work between
   them, so every thread must reach the call.
   
   The reduction covers every element of ``a`` regardless of its rank. Floating-point
   comparisons follow C ``fmax`` semantics: a NaN element is treated as missing.
   
   :param a: The tile to reduce. Must have a scalar element type.
   
   :returns: A shape-``(1,)`` register tile holding the maximum. Read the value with ``[0]``.
   
   See :func:`~warp.tile_min` for an analogous usage example.