mindquantum.dtype

Data type module for MindQuantum.

Supported data type

The data type below is supported by MindQuantum when doing simulation.

mindquantum.float32	single precision real number type
mindquantum.float64	double precision real number type
mindquantum.complex64	single precision complex number type
mindquantum.complex128	double precision complex number type

Memory consuming

The memory usage for full state vector increased with qubit number is shown as below:

qubit number	complex128	complex64
6	1kB	0.5kB
16	1MB	0.5MB
26	1GB	0.5GB
30	16GB	8GB
36	1TB	0.5TB
40	16TB	8TB
46	1PB	0.5PB

Function

API Name	Description
is_double_precision(dtype)	Check whether a type is double precision or not.
is_single_precision(dtype)	Check whether a type is single precision or not.
is_same_precision(dtype1, ...)	Check whether two type is same precision or not.
precision_str(dtype)	Get precision string.
to_real_type(dtype)	Convert type to real type while keeping precision.
to_complex_type(dtype)	Convert type to complex type while keeping precision.
to_single_precision(dtype)	Convert type to single precision.
to_double_precision(dtype)	Convert type to double precision.
to_precision_like(...)	Convert dtype_src to same precision as dtype_des.
to_mq_type(dtype)	Convert type to mindquantum type.
to_np_type(dtype)	Convert type to numpy data type.