NumPyDType¶
Usage
use NumPyDType;
or
import NumPyDType;
- enum DType { UInt8, UInt16, UInt32, UInt64, Int8, Int16, Int32, Int64, Float32, Float64, Complex64, Complex128, Bool, BigInt, Strings, UNDEF }¶
In chapel the types int and real default to int(64) and real(64). We also need other types like float32, int32, etc
- enum constant UInt8¶
- enum constant UInt16¶
- enum constant UInt32¶
- enum constant UInt64¶
- enum constant Int8¶
- enum constant Int16¶
- enum constant Int32¶
- enum constant Int64¶
- enum constant Float32¶
- enum constant Float64¶
- enum constant Complex64¶
- enum constant Complex128¶
- enum constant Bool¶
- enum constant BigInt¶
- enum constant Strings¶
- enum constant UNDEF¶
- proc whichDtype(type etype) param: DType¶
Take a chapel type and return the matching DType
- Arguments
etype – chapel type
- Returns
DType
- proc dtypeSize(dt: DType): int¶
Returns the size in bytes of a DType
- Arguments
dt :
DType– (pythonic) DType- Returns
(int)
- proc str2dtype(dstr: string): DType¶
Turns a dtype string in pythonland into a DType
- Arguments
dstr :
string– pythonic dtype to be converted- Returns
DType
- proc dtype2str(dt: DType): string¶
Turns a DType into a dtype string in pythonland
- Arguments
dtype :
DType– DType to convert to string- Returns
(string)
- proc type2str(type t): string¶
- proc type2fmt(type t): string¶
- proc bool2str(b: bool): string¶
- proc bool2str(b: ?t): t where t != bool
- proc commonDType(a: DType, b: DType): DType¶
Return the dtype that can store the result of an operation between two dtypes for the following operations:
+,-,*,**,//,%,&,|,^,<<,>>follows Numpy’s rules for type promotion (of which the array-api promotion rules are a subset)
- proc divDType(a: DType, b: DType): DType¶
Return the dtype that can store the result of a division operation between two dtypes (following Numpy’s rules for type promotion)