parameters: (a)
return_statement: return _unary_operation(_ti_core.expr_acos, math.acos, a)
docstring: The inverses function of cosine.
  
      Args:
          a (Union[:class:`~taichi.lang.expr.Expr`, :class:`~taichi.lang.matrix.Matrix`]): A number or a matrix with elements in [-1,1].
  
      Returns:
          The inverses function of cosine of `a`.
docstring_summary: The inverses function of cosine.
docstring_tokens: The inverses function of cosine .
function: def acos(a):
      """The inverses function of cosine.
  
      Args:
          a (Union[:class:`~taichi.lang.expr.Expr`, :class:`~taichi.lang.matrix.Matrix`]): A number or a matrix with elements in [-1,1].
  
      Returns:
          The inverses function of cosine of `a`.
      """
      return _unary_operation(_ti_core.expr_acos, math.acos, a)
function_tokens: def acos ( a ) : return _unary_operation ( _ti_core . expr_acos , math . acos , a )