public static dtype result_type(NPY_TYPES type_num)
{
var return_type = DefaultArrayHandlers.GetArrayHandler(type_num).MathOpFloatingType(UFuncOperation.divide);
dtype result_dtype = NpyCoreApi.DescrFromType(return_type);
return(result_dtype);
}
public void NpyArray_FillWithScalar_TestDouble()
{
int DataSize = 0;
NPY_TYPES num_type = NPY_TYPES.NPY_DOUBLE;
var SimpleArray = Common.GetSimpleArray(num_type, ref DataSize);
Assert.AreEqual(num_type, SimpleArray.ItemType);
Common.ArrayDataAdjust = 5;
var ScalarArray = Common.GetSimpleArray(num_type, ref DataSize);
Assert.AreEqual(num_type, ScalarArray.ItemType);
var result = numpyAPI.NpyArray_FillWithScalar(SimpleArray, ScalarArray);
Assert.AreEqual(0, result);
double[] simpleData = (double[])SimpleArray.data.datap;
double[] scalarData = (double[])ScalarArray.data.datap;
Assert.IsTrue(Common.CompareArrays(simpleData, scalarData));
}
public void NpyArray_CheckFromArray_Test()
{
var NPY_TYPES_Values = Enum.GetValues(typeof(NPY_TYPES));
NPY_TYPES targetType = NPY_TYPES.NPY_INT32;
foreach (NPY_TYPES srcType in NPY_TYPES_Values)
{
int ExpectedSize = Common.GetDefaultItemSize(srcType);
if (ExpectedSize < 0)
{
continue;
}
int DataSize = 0;
var DataArray = Common.GetSimpleArray(srcType, ref DataSize, 0, true, false);
var srcDescr = numpyAPI.NpyArray_DescrNewFromType(srcType);
var CheckArray = numpyAPI.NpyArray_CheckFromArray(DataArray, srcDescr, NPYARRAYFLAGS.NPY_CARRAY | NPYARRAYFLAGS.NPY_ENSUREARRAY | NPYARRAYFLAGS.NPY_ENSURECOPY);
Assert.IsNotNull(CheckArray);
Assert.AreEqual(srcType, CheckArray.ItemType);
if (srcType != NPY_TYPES.NPY_BOOL)
{
Assert.IsTrue(Common.CompareArrays(CheckArray, DataArray));
}
}
}
internal static int NpyArray_RegisterCastFunc(NpyArray_Descr descr, NPY_TYPES totype, NpyArray_VectorUnaryFunc castfunc)
{
if (totype < NPY_TYPES.NPY_NTYPES)
{
descr.f.cast[(int)totype] = castfunc;
return(0);
}
if (!NpyTypeNum_ISUSERDEF(totype))
{
NpyErr_SetString(npyexc_type.NpyExc_TypeError, "invalid type number.");
return(-1);
}
if (descr.f.castfuncs == null)
{
descr.f.castfuncs = new List <NpyArray_CastFuncsItem>();
if (descr.f.castfuncs == null)
{
return(-1);
}
}
descr.f.castfuncs.Add(new NpyArray_CastFuncsItem()
{
castfunc = castfunc, totype = totype
});
return(0);
}
private void ConvertToDesiredArrayType_Test(NPY_TYPES targetType)
{
NpyArray SimpleArray = null;
var NPY_TYPES_Values = Enum.GetValues(typeof(NPY_TYPES));
foreach (NPY_TYPES desiredType in NPY_TYPES_Values)
{
int ExpectedSize = Common.GetDefaultItemSize(desiredType);
if (ExpectedSize < 0)
{
continue;
}
int DataSize = 0;
SimpleArray = Common.GetSimpleArray(targetType, ref DataSize);
DataSize *= Common.GetDefaultItemSize(targetType);
VoidPtr nvp1 = numpyAPI.ConvertToDesiredArrayType(SimpleArray.data, 0, DataSize, desiredType);
VoidPtr nvp2 = numpyAPI.ConvertToDesiredArrayType(nvp1, 0, DataSize, targetType);
if (desiredType != NPY_TYPES.NPY_BOOL && desiredType != NPY_TYPES.NPY_DECIMAL && targetType != NPY_TYPES.NPY_DECIMAL)
{
Assert.IsTrue(Common.CompareArrays(SimpleArray.data, nvp2));
}
}
return;
}
internal static ndarray FromPythonScalar(object src, dtype descr)
{
int itemsize = descr.ElementSize;
NPY_TYPES type = descr.TypeNum;
if (itemsize == 0 && NpyDefs.IsExtended(type))
{
int n = PythonOps.Length(src);
if (type == NPY_TYPES.NPY_UNICODE)
{
n *= 4;
}
descr = new dtype(descr);
descr.ElementSize = n;
}
ndarray result = NpyCoreApi.AllocArray(descr, 0, null, false);
if (result.ndim > 0)
{
throw new ArgumentException("shape-mismatch on array construction");
}
result.Dtype.f.setitem(0, src, result.Array);
return(result);
}
internal static bool NpyArray_EquivTypes(NpyArray_Descr typ1, NpyArray_Descr typ2)
{
NPY_TYPES typenum1 = typ1.type_num;
NPY_TYPES typenum2 = typ2.type_num;
int size1 = typ1.elsize;
int size2 = typ2.elsize;
if (size1 != size2)
{
return(false);
}
if (NpyArray_ISNBO(typ1) != NpyArray_ISNBO(typ2))
{
return(false);
}
if (null != typ1.subarray || null != typ2.subarray)
{
return(typenum1 == typenum2 && _equivalent_subarrays(typ1.subarray, typ2.subarray));
}
if (typenum1 == NPY_TYPES.NPY_VOID || typenum2 == NPY_TYPES.NPY_VOID)
{
return((typenum1 == typenum2) &&
_equivalent_fields(typ1.fields, typ2.fields));
}
if (typenum1 == NPY_TYPES.NPY_DATETIME ||
typenum1 == NPY_TYPES.NPY_DATETIME ||
typenum2 == NPY_TYPES.NPY_TIMEDELTA ||
typenum2 == NPY_TYPES.NPY_TIMEDELTA)
{
return((typenum1 == typenum2) &&
_equivalent_units(typ1.dtinfo, typ2.dtinfo));
}
return(typ1.kind == typ2.kind);
}
internal static int NpyArray_RegisterCanCast(NpyArray_Descr descr, NPY_TYPES totype, NPY_SCALARKIND scalar)
{
if (scalar == NPY_SCALARKIND.NPY_NOSCALAR)
{
/*
* register with cancastto
* These lists won't be freed once created
* -- they become part of the data-type
*/
if (descr.f.cancastto == null)
{
descr.f.cancastto = new List <NPY_TYPES>();
descr.f.cancastto.Add(NPY_TYPES.NPY_NOTYPE);
}
descr.f.cancastto.Add(totype);
}
else
{
/* register with cancastscalarkindto */
if (descr.f.cancastscalarkindto == null)
{
descr.f.cancastscalarkindto = new Dictionary <NPY_SCALARKIND, object>();
for (int i = 0; i < npy_defs.NPY_NSCALARKINDS; i++)
{
descr.f.cancastscalarkindto.Add((NPY_SCALARKIND)i, null);
}
}
descr.f.cancastscalarkindto[scalar] = totype;
}
return(0);
}
/// <summary>
/// Returns the array of functions appropriate to a given type. The actual
/// functions in the array will vary with the type sizes in the native code.
/// </summary>
/// <param name="t">Native array type</param>
/// <returns>Functions matching that type</returns>
internal static ArrFuncs FuncsForType(NPY_TYPES t)
{
if (ArrFuncs == null)
{
InitArrFuncs();
}
return(ArrFuncs[(int)t]);
}
internal static bool NpyTypeNum_ISCOMPLEX(NPY_TYPES type)
{
if (type == NPY_TYPES.NPY_COMPLEX)
{
return(true);
}
return(false);
}
internal static bool NpyTypeNum_ISFLEXIBLE(NPY_TYPES type)
{
if ((type >= NPY_TYPES.NPY_STRING) && (type <= NPY_TYPES.NPY_VOID))
{
return(true);
}
return(false);
}
internal static bool NpyTypeNum_ISCOMPLEX(NPY_TYPES type)
{
if ((type >= NPY_TYPES.NPY_CFLOAT) && (type <= NPY_TYPES.NPY_CLONGDOUBLE))
{
return(true);
}
return(false);
}
internal static bool NpyTypeNum_ISUSERDEF(NPY_TYPES type)
{
if ((type >= NPY_TYPES.NPY_USERDEF) && (type < NPY_TYPES.NPY_USERDEF + numpyinternal.NpyArray_GetNumusertypes()))
{
return(true);
}
return(false);
}
internal static bool NpyTypeNum_ISINTEGER(NPY_TYPES type)
{
if ((type >= NPY_TYPES.NPY_BYTE) && (type <= NPY_TYPES.NPY_ULONGLONG))
{
return(true);
}
return(false);
}
internal static bool NpyTypeNum_ISNUMBER(NPY_TYPES type)
{
if (type <= NPY_TYPES.NPY_CLONGDOUBLE)
{
return(true);
}
return(false);
}
public void Npy_IsWriteable_Test1()
{
NPY_TYPES type = NPY_TYPES.NPY_INT32;
int DataSize = 0;
bool b1 = numpyAPI.Npy_IsWriteable(Common.GetOneSegmentArray(type, ref DataSize));
bool b2 = numpyAPI.Npy_IsWriteable(Common.GetSimpleArray(type, ref DataSize));
}
internal static bool NpyArray_CanCastTo(NpyArray_Descr from, NpyArray_Descr to)
{
NPY_TYPES fromtype = from.type_num;
NPY_TYPES totype = to.type_num;
bool ret;
ret = NpyArray_CanCastSafely(fromtype, totype);
return(ret);
}
internal static bool NpyTypeNum_ISDATETIME(NPY_TYPES type)
{
if ((type >= NPY_TYPES.NPY_DATETIME) && (type <= NPY_TYPES.NPY_TIMEDELTA))
{
return(true);
}
return(false);
}
public NpyArray_Descr(NPY_TYPES type_num)
{
f = numpyinternal.GetArrFuncs(type_num);
byteorder = numpyinternal.NPY_NATIVE;
this.type_num = type_num;
this.elsize = DefaultArrayHandlers.GetArrayHandler(type_num).ItemSize;
this.f.nonzero = DefaultArrayHandlers.GetArrayHandler(type_num).NonZero;
}
internal static NpyArray_Descr _get_builtin_descrs(NPY_TYPES type)
{
var ret = _builtin_descrs[(int)type];
if (ret == null)
{
throw new Exception(string.Format("the type '{0}' is not registered as a built in descriptor", type.ToString()));
}
return(ret);
}
private static ndarray ndArrayFromMD(Array ssrc, NPY_TYPES type_num, int ndim)
{
npy_intp [] newshape = new npy_intp[ndim];
for (int i = 0; i < ndim; i++)
{
newshape[i] = ssrc.GetLength(i);
}
return(np.array(new VoidPtr(ArrayFromMD(ssrc, type_num), type_num), null).reshape(newshape));
}
/// <summary>
/// Returns the descriptor for a given native type or null if src is
/// not a scalar type
/// </summary>
/// <param name="src">Object to type</param>
/// <returns>Descriptor for type of 'src' or null if not scalar</returns>
internal static dtype FindScalarType(Object src)
{
NPY_TYPES type = DefaultArrayHandlers.GetArrayType(src);
if (type != NPY_TYPES.NPY_NOTSET)
{
return(NpyCoreApi.DescrFromType(type));
}
return(null);
}
internal static NpyArray_Descr NpyArray_DescrNewFromType(NPY_TYPES type_num)
{
NpyArray_Descr old;
NpyArray_Descr _new;
old = NpyArray_DescrFromType(type_num);
_new = NpyArray_DescrNew(old);
Npy_DECREF(old);
return(_new);
}
public static bool IsDecimal(NPY_TYPES type)
{
switch (type)
{
case NPY_TYPES.NPY_DECIMAL:
return(true);
default:
return(false);
}
}
public static bool IsFlexible(NPY_TYPES type)
{
switch (type)
{
case NPY_TYPES.NPY_STRING:
return(true);
default:
return(false);
}
}
public static bool IsBigInt(NPY_TYPES type)
{
switch (type)
{
case NPY_TYPES.NPY_BIGINT:
return(true);
default:
return(false);
}
}
public static bool IsComplex(NPY_TYPES type)
{
switch (type)
{
case NPY_TYPES.NPY_COMPLEX:
return(true);
default:
return(false);
}
}
internal static bool NpyTypeNum_ISFLEXIBLE(NPY_TYPES type)
{
switch (type)
{
//case NPY_TYPES.NPY_STRING:
// return true;
default:
return(false);
}
}
internal static bool NpyTypeNum_ISOBJECT(NPY_TYPES type)
{
switch (type)
{
case NPY_TYPES.NPY_OBJECT:
return(true);
default:
return(false);
}
}
internal static bool IsString(NPY_TYPES type)
{
switch (type)
{
case NPY_TYPES.NPY_STRING:
return(true);
default:
return(false);
}
}