def atomic_add(x, y):
"""Atomically compute `x + y`, store the result in `x`,
and return the old value of `x`.
`x` must be a writable target, constant expressions or scalars
are not allowed.
Args:
x, y (Union[:mod:`~taichi.types.primitive_types`, :class:`~taichi.Matrix`]): \
The input.
Returns:
The old value of `x`.
Example::
>>> @ti.kernel
>>> def test():
>>> x = ti.Vector([0, 0, 0])
>>> y = ti.Vector([1, 2, 3])
>>> z = ti.atomic_add(x, y)
>>> print(x) # [1, 2, 3] the new value of x
>>> print(z) # [0, 0, 0], the old value of x
>>>
>>> ti.atomic_add(1, x) # will raise TaichiSyntaxError
"""
return impl.expr_init(
expr.Expr(_ti_core.expr_atomic_add(x.ptr, y.ptr), tb=stack_info()))
def atomic_add(a, b):
return impl.expr_init(
expr.Expr(_ti_core.expr_atomic_add(a.ptr, b.ptr), tb=stack_info()))