cupy.poly1d#

class cupy.poly1d(c_or_r, r=False, variable=None)[source]#

A one-dimensional polynomial class.

Note

This is a counterpart of an old polynomial class in NumPy. Note that the new NumPy polynomial API (numpy.polynomial.polynomial) has different convention, e.g. order of coefficients is reversed.

Parameters:

  • c_or_r (array_like) – The polynomial’s coefficients in decreasing powers

  • r (bool, optional) – If True, c_or_r specifies the polynomial’s roots; the default is False.

  • variable (str, optional) – Changes the variable used when printing the polynomial from x to variable

See also

numpy.poly1d

Methods

__call__(*args, **kwargs)#

Call self as a function.

__getitem__(key, /)#

Return self[key].

__setitem__(key, value, /)#

Set self[key] to value.

__len__()#

Return len(self).

__iter__()#

Implement iter(self).

deriv(self, m=1)#
get(self, stream=None)#

Returns a copy of poly1d object on host memory.

Parameters:

stream (cupy.cuda.Stream) – CUDA stream object. If it is given, the copy runs asynchronously. Otherwise, the copy is synchronous. The default uses CUDA stream object of the current context.

Returns:

Copy of poly1d object on host memory.

Return type:

numpy.poly1d

integ(self, m=1, k=0)#
set(self, polyin, stream=None)#

Copies a poly1d object on the host memory to cupy.poly1d.

Parameters:

  • polyin (numpy.poly1d) – The source object on the host memory.

  • stream (cupy.cuda.Stream) – CUDA stream object. If it is given, the copy runs asynchronously. Otherwise, the copy is synchronous. The default uses CUDA stream object of the current context.

__eq__(value, /)#

Return self==value.

__ne__(value, /)#

Return self!=value.

__lt__(value, /)#

Return self<value.

__le__(value, /)#

Return self<=value.

__gt__(value, /)#

Return self>value.

__ge__(value, /)#

Return self>=value.

Attributes

c#
coef#
coefficients#
coeffs#
o#
order#
r#
roots#
variable#