def rsub(self, other):
"""
substract other by self
inplace if possible
"""
if isinstance(other, PitchArray):
if self.shape != other.shape:
raise ValueError("array dimension misaligned")
dtype = _get_common_dtype(self, other)
if self.dtype == dtype:
result = self
else:
result = self._new_like_me(dtype = dtype)
if self.size:
if self.M == 1:
func = pu.get_subarray_function(other.dtype, self.dtype, result.dtype, pitch = False)
func.prepared_call(self._grid, self._block, result.gpudata, other.gpudata, self.gpudata, self.size)
else:
func = pu.get_subarray_function(other.dtype, self.dtype, result.dtype, pitch = True)
func.prepared_call(self._grid, self._block, self.M, self.N, result.gpudata, result.ld, other.gpudata, other.ld, self.gpudata, self.ld)
return result
else:
if other == 0:
return self
else:
if self.size:
if self.M == 1:
func = pu.get_scalarsub_function(self.dtype, pitch = False)
func.prepared_call(self._grid, self._block, self.gpudata, self.gpudata, other, self.size)
else:
func = pu.get_scalarsub_function(self.dtype, pitch = True)
func.prepared_call(self._grid, self._block, self.M, self.N, self.gpudata, self.ld, self.gpudata, self.ld, other)
return self
def __rsub__(self, other):
if isinstance(other, PitchArray):
if self.shape != other.shape:
raise ValueError("array dimension misaligned")
result = self._new_like_me(_get_common_dtype(self, other))
if self.size:
if self.M == 1:
func = pu.get_subarray_function(other.dtype,
self.dtype,
result.dtype,
pitch=False)
func.prepared_call(self._grid, self._block, result.gpudata,
other.gpudata, self.gpudata, self.size)
else:
func = pu.get_subarray_function(other.dtype,
self.dtype,
result.dtype,
pitch=True)
func.prepared_call(self._grid, self._block, self.M, self.N,
result.gpudata, result.ld,
other.gpudata, other.ld, self.gpudata,
self.ld)
return result
else:
result = self._new_like_me()
if self.size:
if self.M == 1:
func = pu.get_scalarsub_function(self.dtype, pitch=False)
func.prepared_call(self._grid, self._block, result.gpudata,
self.gpudata, other, self.size)
else:
func = pu.get_scalarsub_function(self.dtype, pitch=True)
func.prepared_call(self._grid, self._block, self.M, self.N,
result.gpudata, result.ld, self.gpudata,
self.ld, other)
return result
def __rsub__(self, other):
if isinstance(other, PitchArray):
if self.shape != other.shape:
raise ValueError("array dimension misaligned")
result = self._new_like_me(_get_common_dtype(self, other))
if self.size:
if self.M == 1:
func = pu.get_subarray_function(other.dtype, self.dtype, result.dtype, pitch = False)
func.prepared_call(self._grid, self._block, result.gpudata, other.gpudata, self.gpudata, self.size)
else:
func = pu.get_subarray_function(other.dtype, self.dtype, result.dtype, pitch = True)
func.prepared_call(self._grid, self._block, self.M, self.N, result.gpudata, result.ld, other.gpudata, other.ld, self.gpudata, self.ld)
return result
else:
result = self._new_like_me()
if self.size:
if self.M == 1:
func = pu.get_scalarsub_function(self.dtype, pitch = False)
func.prepared_call(self._grid, self._block, result.gpudata, self.gpudata, other, self.size)
else:
func = pu.get_scalarsub_function(self.dtype, pitch = True)
func.prepared_call(self._grid, self._block, self.M, self.N, result.gpudata, result.ld, self.gpudata, self.ld, other)
return result