Array functions¶

Array creation functions¶

apytypes.zeros(shape: tuple[int, ...], *, int_bits: int, frac_bits: int, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray¶

apytypes.zeros(shape: tuple[int, ...], *, bits: int, int_bits: int, frac_bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray

apytypes.zeros(shape: tuple[int, ...], *, bits: int, frac_bits: int, int_bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray

apytypes.zeros(shape: tuple[int, ...], *, exp_bits: int, man_bits: int, bias: int | None = None, int_bits: None = None, frac_bits: None = None, bits: None = None, force_complex: None = None) → APyFloatArray

Create an array of shape with all zeros.

Word lengths need to be specified and the return type is deduced from the bit specifiers. Either specify exactly two of three from int_bits, frac_bits, and bits, for APyFixedArray, or specify both exp_bits and man_bits for APyFloatArray. Specify force_complex to retrieve a complex-valued array type.

Parameters:

shapetuple of int: Shape of the array.
int_bitsint, optional: Number of fixed-point integer bits.
frac_bitsint, optional: Number of fixed-point fractional bits.
bitsint, optional: Number of fixed-point bits.
exp_bitsint, optional: Number of floating-point exponential bits.
man_bitsint, optional: Number of floating-point mantissa bits.
biasint, optional: Exponent bias. If not provided, bias is 2**exp_bits - 1.
force_complexbool, optional: Retrieve the complex-valued array type, APyCFixedArray for fixed-point and APyCFloatArray for floating-point.

Returns:

resultAPyFloatArray or APyFixedArray or APyCFixedArray: The initialized array with zeros.

apytypes.ones(shape: tuple[int, ...], *, int_bits: int, frac_bits: int, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray¶

apytypes.ones(shape: tuple[int, ...], *, bits: int, int_bits: int, frac_bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray

apytypes.ones(shape: tuple[int, ...], *, bits: int, frac_bits: int, int_bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray

apytypes.ones(shape: tuple[int, ...], *, exp_bits: int, man_bits: int, bias: int | None = None, int_bits: None = None, frac_bits: None = None, bits: None = None, force_complex: None = None) → APyFloatArray

Create an array of shape with all ones (stored value).

Parameters:

shapetuple of int: Shape of the array.
int_bitsint, optional: Number of fixed-point integer bits.
frac_bitsint, optional: Number of fixed-point fractional bits.
bitsint, optional: Number of fixed-point bits.
exp_bitsint, optional: Number of floating-point exponential bits.
man_bitsint, optional: Number of floating-point mantissa bits.
biasint, optional: Exponent bias. If not provided, bias is 2**exp_bits - 1.
force_complexbool, optional: Retrieve the complex-valued array type, APyCFixedArray for fixed-point and APyCFloatArray for floating-point.

Returns:

resultAPyFloatArray or APyFixedArray or APyCFixedArray: The array initialized filled with ones.

apytypes.eye(n: int, m: int | None = None, *, int_bits: int, frac_bits: int, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray¶

apytypes.eye(n: int, m: int | None = None, *, bits: int, int_bits: int, frac_bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray

apytypes.eye(n: int, m: int | None = None, *, bits: int, frac_bits: int, int_bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray

apytypes.eye(n: int, m: int | None = None, *, exp_bits: int, man_bits: int, bias: int | None = None, bits: None = None, frac_bits: None = None, int_bits: None = None, force_complex: None = None) → APyFloatArray

Return a 2-D array with ones (stored value) on the main diagonal and zeros elsewhere.

Parameters:

nint: Number of rows in the output.
mint, optional: Number of columns in the output. If None, defaults to n.
int_bitsint, optional: Number of fixed-point integer bits.
frac_bitsint, optional: Number of fixed-point fractional bits.
bitsint, optional: Number of fixed-point bits.
exp_bitsint, optional: Number of floating-point exponential bits.
man_bitsint, optional: Number of floating-point mantissa bits.
biasint, optional: Exponent bias. If not provided, bias is 2**exp_bits - 1.
force_complexbool, optional: Return the complex-valued array type, APyCFixedArray for fixed-point and APyCFloatArray for floating-point.

Returns:

resultAPyFloatArray, APyFixedArray or APyCFixedArray: An array where all elements are equal to zero, except for the k-th diagonal, whose values are equal to one.

apytypes.identity(n: int, *, int_bits: int, frac_bits: int, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray¶

apytypes.identity(n: int, *, bits: int, int_bits: int, frac_bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray

apytypes.identity(n: int, *, bits: int, frac_bits: int, int_bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None, force_complex: None = None) → APyFixedArray

apytypes.identity(n: int, *, exp_bits: int, man_bits: int, bias: int | None = None, int_bits: None = None, bits: None = None, frac_bits: None = None, force_complex: None = None) → APyFloatArray

Return the identity array.

Parameters:

nint: Number of rows and columns in output.
int_bitsint, optional: Number of fixed-point integer bits.
frac_bitsint, optional: Number of fixed-point fractional bits.
bitsint, optional: Number of fixed-point bits.
exp_bitsint, optional: Number of floating-point exponential bits.
man_bitsint, optional: Number of floating-point mantissa bits.
biasint, optional: Exponent bias. If not provided, bias is 2**exp_bits - 1.
force_complexbool, optional: Return the complex-valued array type, APyCFixedArray for fixed-point and APyCFloatArray for floating-point.

Returns:

resultAPyFloatArray, APyFixedArray or APyCFixedArray: n x n array with ones (stored value) on the main diagonal and zeros elsewhere.

apytypes.full(shape: tuple[int, ...], fill_value: APyFixed | APyCFixed | APyFloat | APyCFloat | int | float, *, int_bits: int, frac_bits: int, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray¶

apytypes.full(shape: tuple[int, ...], fill_value: APyFixed | APyCFixed | APyFloat | APyCFloat | int | float, *, bits: int, int_bits: int, frac_bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray

apytypes.full(shape: tuple[int, ...], fill_value: APyFixed | APyCFixed | APyFloat | APyCFloat | int | float, *, bits: int, frac_bits: int, int_bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray

apytypes.full(shape: tuple[int, ...], fill_value: APyFixed, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray

apytypes.full(shape: tuple[int, ...], fill_value: APyFloat, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFloatArray

Return a new array of given shape and type, filled with fill_value.

If fill_value is of type int or float, you must specify the word lengths. Either specify exactly two of three from int_bits, frac_bits, and bits, for APyFixedArray, or specify both exp_bits and man_bits for APyFloatArray. If fill_value is of type APyFloat or APyFixed, the array will use the provided word lengths only if specified, otherwise the word lengths are inherited from fill_value.

Parameters:

shapetuple: Shape of the array.
fill_valueAPyFloat or APyFixed or int or :class`float`: Fill value.
int_bitsint, optional: Number of fixed-point integer bits.
frac_bitsint, optional: Number of fixed-point fractional bits.
bitsint, optional: Number of fixed-point bits.
exp_bitsint, optional: Number of floating-point exponential bits.
man_bitsint, optional: Number of floating-point mantissa bits.
biasint, optional: Exponent bias. If not provided, bias is 2**exp_bits - 1.

Returns:

resultAPyFloatArray or APyFixedArray: Array of all fill_value with the given shape.

apytypes.zeros_like(a: APyFixedArray, *, int_bits: int | None = None, frac_bits: int | None = None, bits: int | None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray¶

apytypes.zeros_like(a: APyCFixedArray, *, int_bits: int | None = None, frac_bits: int | None = None, bits: int | None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyCFixedArray

apytypes.zeros_like(a: APyFloatArray, *, exp_bits: int | None = None, man_bits: int | None = None, bias: int | None = None, int_bits: None = None, frac_bits: None = None, bits: None = None) → APyFloatArray

apytypes.zeros_like(a: APyCFloatArray, *, exp_bits: int | None = None, man_bits: int | None = None, bias: int | None = None, int_bits: None = None, frac_bits: None = None, bits: None = None) → APyCFloatArray

Return an array of all zeros with the same shape and type as a.

The type and bit-specifiers of the returned array can be overwritten through the bit-specifier arguments. To modify the type, either specify exactly two of three from int_bits, frac_bits, and bits, for APyFixedArray and APyCFixedArray, or specify both exp_bits and man_bits for APyFloatArray.

Parameters:

aAPyFixedArray, APyFloatArray, or APyCFixedArray: The shape and data-type of a define these same attributes of the returned array.
int_bitsint, optional: Number of fixed-point integer bits.
frac_bitsint, optional: Number of fixed-point fractional bits.
bitsint, optional: Number of fixed-point bits.
exp_bitsint, optional: Number of floating-point exponential bits.
man_bitsint, optional: Number of floating-point mantissa bits.
biasint, optional: Exponent bias. If not provided, bias is 2**exp_bits - 1.

Returns:

resultAPyFloatArray or APyFixedArray: The initialized array with all zeros.

apytypes.ones_like(a: APyFixedArray, *, int_bits: int | None = None, frac_bits: int | None = None, bits: int | None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray¶

apytypes.ones_like(a: APyCFixedArray, *, int_bits: int | None = None, frac_bits: int | None = None, bits: int | None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyCFixedArray

apytypes.ones_like(a: APyFloatArray, *, exp_bits: int | None = None, man_bits: int | None = None, bias: int | None = None, int_bits: None = None, frac_bits: None = None, bits: None = None) → APyFloatArray

apytypes.ones_like(a: APyCFloatArray, *, exp_bits: int | None = None, man_bits: int | None = None, int_bits: None = None, frac_bits: None = None, bits: None = None, bias: None = None) → APyCFloatArray

Return an array of all ones (stored value) with the same shape and type as a.

The type and bit-specifiers of the returned array can be overwritten through the bit-specifier arguments. To modify the type, either specify exactly two of three from int_bits, frac_bits, and bits, for APyFixedArray, or specify both exp_bits and man_bits for APyFloatArray.

Parameters:

aAPyFixedArray, APyFloatArray, or APyCFixedArray: The shape and data-type of a define these same attributes of the returned array.
int_bitsint, optional: Number of fixed-point integer bits.
frac_bitsint, optional: Number of fixed-point fractional bits.
bitsint, optional: Number of fixed-point bits.
exp_bitsint, optional: Number of floating-point exponential bits.
man_bitsint, optional: Number of floating-point mantissa bits.
biasint, optional: Exponent bias. If not provided, bias is 2**exp_bits - 1.

Returns:

resultAPyFloatArray or APyFixedArray: The array initialized filled with all ones.

Return an array with all values initialized to fill_value, with the same shape and type as a.

The type and bit-specifiers of the returned array can be overwritten through the bit-specifier arguments. To overwrite the type, either specify exactly two of three from int_bits, frac_bits, and bits, for APyFixedArray, or specify both exp_bits and man_bits for APyFloatArray.

Parameters:

aAPyFloatArray or APyFixedArray: The shape and array type of the returned array.
fill_valueAPyFloat or APyFixed or int or float: The value to fill the array with.
int_bitsint, optional: Number of fixed-point integer bits.
frac_bitsint, optional: Number of fixed-point fractional bits.
bitsint, optional: Number of fixed-point bits.
exp_bitsint, optional: Number of floating-point exponential bits.
man_bitsint, optional: Number of floating-point mantissa bits.
biasint, optional: Exponent bias. If not provided, bias is 2**exp_bits - 1.

Returns:

resultAPyFloatArray or APyFixedArray: Array filled with fill_value, having the same shape and type as a.

apytypes.arange(start: APyFixed, stop: APyFixed | int | float | None = None, step: APyFixed | int | float = 1, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray

apytypes.arange(start: APyFixed | int | float, stop: APyFixed, step: APyFixed | int | float = 1, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray

apytypes.arange(start: APyFixed | int | float, stop: APyFixed | int | float, step: APyFixed, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray

apytypes.arange(start: APyFloat, stop: APyFloat | int | float | None = None, step: APyFloat | int | float = 1, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFloatArray

apytypes.arange(start: APyFloat | int | float, stop: APyFloat, step: APyFloat | int | float = 1, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFloatArray

apytypes.arange(start: APyFloat | int | float, stop: APyFloat | int | float, step: APyFloat, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFloatArray

Create an array with evenly spaced values within a given interval.

The function can be called with varying number of positional arguments:

arange(stop): Values are generated within the half-open interval [0, stop) (in other words, the interval including start but excluding stop).
arange(start, stop): Values are generated within the half-open interval [start, stop).
arange(start, stop, step): Values are generated within the half-open interval [start, stop), with spacing between values given by step.

If no bit-specifiers are given, the array type is deduced based on start, stop, and step. In this case, all APyTypes scalars must be of the same format.

Parameters:

startint, float, APyFloat, APyFixed: Start number.
stopint, float, APyFloat, APyFixed, optional: Stop number.
stepint, float, APyFloat, APyFixed, optional: Step size in range.
int_bitsint, optional: Number of fixed-point integer bits.
frac_bitsint, optional: Number of fixed-point fractional bits.
bitsint, optional: Number of fixed-point bits.
exp_bitsint, optional: Number of floating-point exponential bits.
man_bitsint, optional: Number of floating-point mantissa bits.
biasint, optional: Exponent bias. If not provided, bias is 2**exp_bits - 1.

Returns:

resultAPyFloatArray or APyFixedArray: Array with evenly spaced values within a given interval.

apytypes.fullrange(start: APyFixed, stop: APyFixed | int | float | None = None, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray

apytypes.fullrange(start: APyFixed | int | float, stop: APyFixed, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFixedArray

apytypes.fullrange(start: APyFloat, stop: APyFloat | int | float | None = None, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFloatArray

apytypes.fullrange(start: APyFloat | int | float, stop: APyFloat, *, int_bits: None = None, frac_bits: None = None, bits: None = None, exp_bits: None = None, man_bits: None = None, bias: None = None) → APyFloatArray

Create an array with all values within a given interval.

The function can be called with varying number of positional arguments:

arange(stop): Values are generated within the half-open interval [0, stop) (in other words, the interval including start but excluding stop).
arange(start, stop): Values are generated within the half-open interval [start, stop).

If no bit-specifiers are given, the array type is deduced based on start and stop. In this case, all APyTypes scalars must be of the same format.

Parameters:

startint, float, APyFloat, APyFixed: Start number.
stopint, float, APyFloat, APyFixed, optional: Stop number.
int_bitsint, optional: Number of fixed-point integer bits.
frac_bitsint, optional: Number of fixed-point fractional bits.
bitsint, optional: Number of fixed-point bits.
exp_bitsint, optional: Number of floating-point exponential bits.
man_bitsint, optional: Number of floating-point mantissa bits.
biasint, optional: Exponent bias. If not provided, bias is 2**exp_bits - 1.

Returns:

resultAPyFloatArray or APyFixedArray: Array with all values within a given interval.

Create a list of coordinate arrays based on several coordinate vectors (1-D arrays). The input vectors must all have the same bit specifiers.

Added in version 0.4.

Parameters:

arraysAPyFixedArray, APyFloatArray, APyCFixedArray, APyCFloatArray: The coordinate vectors (1-D arrays).
indexing{“xy”, “ij”}, default: “xy”: The indexing mode to use for the meshgrid. “xy” is the standard Cartesian indexing, while “ij” is the matrix indexing.

Returns:

resultlist of APyFixedArray, APyFloatArray, APyCFixedArray, APyCFloatArray: List of 2-D arrays representing the meshgrid.

Examples

>>> import apytypes as apy
>>> x = apy.fx(range(3), int_bits=5, frac_bits=0)
>>> y = apy.fx(range(4, 7), int_bits=5, frac_bits=0)
>>> xx, yy = apy.meshgrid(x, y)
>>> xx
APyFixedArray([[0, 1, 2],
               [0, 1, 2],
               [0, 1, 2]], int_bits=5, frac_bits=0)
>>> yy
APyFixedArray([[4, 4, 4],
               [5, 5, 5],
               [6, 6, 6]], int_bits=5, frac_bits=0)

Array modification functions¶

apytypes.expand_dims(a: APyFixedArray, axis: int | tuple[int, ...]) → APyFixedArray¶

apytypes.expand_dims(a: APyFloatArray, axis: int | tuple[int, ...]) → APyFloatArray

apytypes.expand_dims(a: APyCFixedArray, axis: int | tuple[int, ...]) → APyCFixedArray

apytypes.expand_dims(a: APyCFloatArray, axis: int | tuple[int, ...]) → APyCFloatArray

Expand the shape of an array.

Insert a new axis that will appear at the axis position in the expanded array shape.

Parameters:

aAPyFloatArray, APyFixedArray, APyCFixedArray, or: APyCFloatArray The array whose axes should be reordered.
axisint or tuple of ints: Position in the expanded axes where the new axis (or axes) is placed.

Returns:

resultAPyFloatArray or APyFixedArray: Copy of a with the number of dimensions increased.

Examples

>>> import apytypes as apy
>>> x = apy.fx([1, 2], int_bits=5, frac_bits=0)
>>> x.shape
(2,)

>>> y = apy.expand_dims(x, axis=0)
>>> y
APyFixedArray([[1, 2]], int_bits=5, frac_bits=0)
>>> y.shape
(1, 2)

>>> y = apy.expand_dims(x, axis=1)
>>> y
APyFixedArray([[1],
               [2]], int_bits=5, frac_bits=0)

>>> y.shape
(2, 1)

axis may also be a tuple:

>>> y = apy.expand_dims(x, axis=(0, 1))
>>> y
APyFixedArray([[[1, 2]]], int_bits=5, frac_bits=0)
>>> y.shape
(1, 1, 2)

>>> y = apy.expand_dims(x, axis=(2, 0))
>>> y
APyFixedArray([[[1],
                [2]]], int_bits=5, frac_bits=0)
>>> y.shape
(1, 2, 1)

apytypes.ravel(a: APyFixedArray) → APyFixedArray¶

apytypes.ravel(a: APyFloatArray) → APyFloatArray

apytypes.ravel(a: APyCFixedArray) → APyCFixedArray

apytypes.ravel(a: APyCFloatArray) → APyCFloatArray

Return a copy of the array collapsed into one dimension.

Same as flatten() with current memory-copy model.

Returns:

collapsedAPyFloatArray or APyFixedArray: copy of a but collapsed

Examples

>>> import apytypes as apy
>>> signs = [[0, 0], [1, 1]]
>>> exps = [[127, 128], [128, 129]]
>>> mans = [[0, 0], [4194304, 0]]
>>> arr = apy.APyFloatArray(
...     signs=signs, exps=exps, mans=mans, exp_bits=8, man_bits=23
... )
>>> arr.to_numpy()
array([[ 1.,  2.],
       [-3., -4.]])

>>> apy.ravel(arr).to_numpy()
array([ 1.,  2., -3., -4.])

apytypes.moveaxis(a: APyFixedArray, source: int | Sequence[int], destination: int | Sequence[int]) → APyFixedArray¶

apytypes.moveaxis(a: APyFloatArray, source: int | Sequence[int], destination: int | Sequence[int]) → APyFloatArray

apytypes.moveaxis(a: APyCFixedArray, source: int | Sequence[int], destination: int | Sequence[int]) → APyCFixedArray

apytypes.moveaxis(a: APyCFloatArray, source: int | Sequence[int], destination: int | Sequence[int]) → APyCFloatArray

Move axes of an array to new positions.

Other axes remain in their original order.

Parameters:

aAPyFloatArray or APyFixedArray: The array whose axes should be reordered.
sourceint or sequence of int: Original positions of the axes to move. These must be unique.
destinationint or sequence of int: Destination positions for each of the original axes. These must also be unique.

Returns:

resultAPyFloatArray or APyFixedArray: Copy of array with moved axes.

Examples

>>> import apytypes as apy
>>> x = apy.zeros((3, 4, 5), int_bits=16, frac_bits=0)
>>> apy.moveaxis(x, 0, -1).shape
(4, 5, 3)
>>> apy.moveaxis(x, -1, 0).shape
(5, 3, 4)

These all achieve the same result:

>>> apy.transpose(x).shape
(5, 4, 3)
>>> apy.swapaxes(x, 0, -1).shape
(5, 4, 3)
>>> apy.moveaxis(x, [0, 1], [-1, -2]).shape
(5, 4, 3)
>>> apy.moveaxis(x, [0, 1, 2], [-1, -2, -3]).shape
(5, 4, 3)

apytypes.squeeze(a: APyFixedArray, axis: int | tuple[int, ...] | None = None) → APyFixedArray¶

apytypes.squeeze(a: APyFloatArray, axis: int | tuple[int, ...] | None = None) → APyFloatArray

apytypes.squeeze(a: APyCFloatArray, axis: int | tuple[int, ...] | None = None) → APyCFloatArray

apytypes.squeeze(a: APyCFixedArray, axis: int | tuple[int, ...] | None = None) → APyCFixedArray

Remove axes of length one from a.

Parameters:

aAPyFloatArray, APyFixedArray, or APyCFixedArray, or APyCFloatArray: Input array.
axisint or tuple of ints, optional: Selects a subset of the entries of length one in the shape.

Returns:

squeezedAPyFloatArray, APyFixedArray, APyCFixedArray, or APyCFloatArray: The input array, but with all or a subset of the dimensions of length 1 removed.

Raises:

ValueError: If axis is not None, and an axis being squeezed is not of length 1

apytypes.swapaxes(a: APyFixedArray, axis1: int, axis2: int) → APyFixedArray¶

apytypes.swapaxes(a: APyFloatArray, axis1: int, axis2: int) → APyFloatArray

apytypes.swapaxes(a: APyCFixedArray, axis1: int, axis2: int) → APyCFixedArray

apytypes.swapaxes(a: APyCFloatArray, axis1: int, axis2: int) → APyCFloatArray

Interchange two axes of an array.

Parameters:

aAPyFloatArray or APyFixedArray: The array whose axes should be reordered.
axis1int: First axis.
axis2int: Second axis.

Returns:

a_swappedAPyFloatArray or APyFixedArray: Copy of a with axes swapped

Examples

>>> import apytypes as apy
>>> x = apy.fp([[1, 2, 3]], exp_bits=5, man_bits=2)
>>> apy.swapaxes(x, 0, 1)
APyFloatArray(
    [[ 0],
     [ 0],
     [ 0]],

    [[15],
     [16],
     [16]],

    [[ 0],
     [ 0],
     [ 2]],
    exp_bits=5,
    man_bits=2
)

>>> x = apy.fp([[[0, 1], [2, 3]], [[4, 5], [6, 7]]], exp_bits=5, man_bits=3)
>>> x
APyFloatArray(
    [[[ 0,  0],
      [ 0,  0]],

     [[ 0,  0],
      [ 0,  0]]],


    [[[ 0, 15],
      [16, 16]],

     [[17, 17],
      [17, 17]]],


    [[[ 0,  0],
      [ 0,  4]],

     [[ 0,  2],
      [ 4,  6]]],
    exp_bits=5,
    man_bits=3
)

>>> apy.swapaxes(x, 0, 2)
APyFloatArray(
    [[[ 0,  0],
      [ 0,  0]],

     [[ 0,  0],
      [ 0,  0]]],


    [[[ 0, 17],
      [16, 17]],

     [[15, 17],
      [16, 17]]],


    [[[ 0,  0],
      [ 0,  4]],

     [[ 0,  2],
      [ 4,  6]]],
    exp_bits=5,
    man_bits=3
)

Array utility functions¶

apytypes.convolve(a: APyFixedArray, v: APyFixedArray, mode: Literal['full', 'same', 'valid'] = 'full') → APyFixedArray¶

apytypes.convolve(a: APyFloatArray, v: APyFloatArray, mode: Literal['full', 'same', 'valid'] = 'full') → APyFloatArray

apytypes.convolve(a: APyCFixedArray, v: APyCFixedArray, mode: Literal['full', 'same', 'valid'] = 'full') → APyCFixedArray

apytypes.convolve(a: APyCFloatArray, v: APyCFloatArray, mode: Literal['full', 'same', 'valid'] = 'full') → APyCFloatArray

Return the discrete linear convolution of two one-dimensional arrays.

Parameters:

aAPyFloatArray or APyFixedArray

First one-dimensional array of length M

vAPyFloatArray or APyFixedArray

Second one-dimensional array of length N.

mode{‘full’, ‘same’, ‘valid’}, default: ‘full’

‘full’:: Return the full convolution for each point of overlap. The resulting single-dimensional shape will have length N + M - 1. Boundary effects occurs for points where the a and v do not overlap completely.
‘same’:: Return a convolution of length max(M, N). Boundary effects still occur around the edges of the result.
‘valid’:: Return the convolution for each point of full overlap. The resulting single-dimensional shape will have length max(M, N) - min(M, N) + 1

Returns:

convolvedAPyFloatArray or APyFixedArray: The convolved array.

apytypes.shape(arr: APyFixedArray | APyCFixedArray | APyFloatArray | APyCFloatArray) → tuple[int, ...]¶

Return the shape of an array.

Parameters:

arrAPyFloatArray or APyFixedArray: Input data.

Returns:

tuple of int: Shape of the input array.

Raises:

TypeError: If the input does not have a shape attribute.

apytypes.export_csv(a: APyFixedArray, fname: str, delimiter: str = ',', layout: Literal['default', 'vunit'] = 'default') → None¶

apytypes.export_csv(a: APyFloatArray, fname: str, delimiter: str = ',', layout: Literal['default', 'vunit'] = 'default') → None

Store the bit values of an array to a CSV file.

The function supports multi-dimensional arrays:

For 1-D arrays, all elements are written on a single line.
For 2-D arrays, each row of the array is written on a separate line.
Higher-dimensional arrays must be handled manually unless supported by the chosen layout.

By default, a 1-D array will be exported as a single row CSV, and a 2-D array will be exported as multiple rows.

Attention

The index order of arrays may differ between APyTypes and other programs.

Note

The VUnit layout transposes the array so that the index order of VUnit’s get function will behave the same as in APyTypes. For a 2-D array, VUnit’s integer_array package will have the shape height, width = a.shape. For a 3-D array, VUnit’s integer_array package must be reshaped to height, width, depth = a.shape after importing it as a 2-D array. The array is stored in the CSV with the shape height, width = a.shape[1], a.shape[0]*a.shape[2]. Lastly, negative fixed-point values are represented using the minus sign to match the expectations of VUnit.

Hint

To export a complex-valued array, use separate CSV files for real and imaginary parts.

Added in version 0.4.

Parameters:

aAPyFixedArray or APyFloatArray: The array to store the bit values of.
fnamestr: Path to the CSV file to store bit values.
delimiterstr, optional: Character used in the CSV file to separate bit values. Default is ,.
layout{“default”, “vunit”}, default: “default”: Layout to use when storing the array.