Class LegacyBuiltinDTypeMeta
- Namespace
- NumSharp
- Assembly
- NumSharp.dll
The DType class of a storage-backed NumSharp dtype — the 15 element types (plus the vestigial
String), wrapped the way NumPy's dtypemeta_wrap_legacy_descriptor wraps its
builtin descriptors into numpy.dtypes.*DType classes. Data-driven: the registry constructs one per
NPTypeCode with its NumPy type number, kind, char, size, alignment and aliases; the behaviour
slots are the builtin ones — the singleton is the default descriptor, and CommonDType(DTypeMeta) is NumPy's
default_builtin_common_dtype over NumSharp's frozen promotion table
(NumSharp.np._nptypemap_arr_arr), so every existing promote_types answer is reproduced bit-for-bit.
public sealed class LegacyBuiltinDTypeMeta : DTypeMeta- Inheritance
-
LegacyBuiltinDTypeMeta
- Inherited Members
Methods
CommonDType(DTypeMeta)
NumPy's default_builtin_common_dtype: the NEP 50 Python-scalar rules first (a weak float adopts a
float/complex class, a weak int adopts any numeric class, a weak complex lifts a real float to complex),
then defer to the class with the larger type number, then the frozen promotion table.
public override DTypeMeta CommonDType(DTypeMeta other)Parameters
otherDTypeMeta
Returns
DefaultDescr()
The singleton — a non-parametric class has exactly one canonical descriptor.
public override DType DefaultDescr()Returns
IsKnownScalarType(Type)
is_known_scalar_type: whether a C# scalar of type belongs to this class.
public override bool IsKnownScalarType(Type type)Parameters
typeType