public static NDArray ExtractDiagonal(NDArray arr, int diagonalIndex = 0)
{
IntPtr ptr;
Internal.VERIFY(AFData.af_diag_extract(out ptr, arr._ptr, diagonalIndex));
return(new NDArray(ptr));
}
public static Complex Min(NDArray arr)
{
double r, i;
Internal.VERIFY(AFAlgorithm.af_min_all(out r, out i, arr._ptr));
return(new Complex(r, i));
}
public static NDArray StdDev(NDArray arr, int dim)
{
IntPtr ptr;
Internal.VERIFY(AFStatistics.af_stdev(out ptr, arr._ptr, dim));
return(new NDArray(ptr));
}
public static NDArray Dot(NDArray lhs, NDArray rhs, bool lconj = false, bool rconj = false)
{
IntPtr ptr;
Internal.VERIFY(AFBlas.af_dot(out ptr, lhs._ptr, rhs._ptr, lconj ? af_mat_prop.AF_MAT_CONJ : af_mat_prop.AF_MAT_NONE, rconj ? af_mat_prop.AF_MAT_CONJ : af_mat_prop.AF_MAT_NONE));
return(new NDArray(ptr));
}
public static NDArray Wrap(NDArray arr, uint ox, uint oy, uint wx, uint wy, uint sx, uint sy, uint px, uint py, bool is_column)
{
IntPtr ptr;
Internal.VERIFY(AFImgPro.af_wrap(out ptr, arr._ptr, ox, oy, wx, wy, sx, sy, px, py, is_column));
return(new NDArray(ptr));
}
public static Complex Var(NDArray arr, bool isbiased = false)
{
double r, i;
Internal.VERIFY(AFStatistics.af_var_all(out r, out i, arr._ptr, isbiased));
return(new Complex(r, i));
}
public static NDArray Inverse(NDArray arr)
{
IntPtr ptr;
Internal.VERIFY(AFLapack.af_inverse(out ptr, arr._ptr, af_mat_prop.AF_MAT_NONE));
return(new NDArray(ptr));
}
public static NDArray Max(NDArray arr, int dim)
{
IntPtr ptr;
Internal.VERIFY(AFAlgorithm.af_max(out ptr, arr._ptr, dim));
return(new NDArray(ptr));
}
public static NDArray Transpose(NDArray arr, bool conjugate)
{
IntPtr ptr;
Internal.VERIFY(AFBlas.af_transpose(out ptr, arr._ptr, conjugate));
return(new NDArray(ptr));
}
public static Complex Det(NDArray arr)
{
double r, i;
Internal.VERIFY(AFLapack.af_det(out r, out i, arr._ptr));
return(new Complex(r, i));
}
public static NDArray Var(NDArray arr, int dim, bool isbiased = false)
{
IntPtr ptr;
Internal.VERIFY(AFStatistics.af_var(out ptr, arr._ptr, isbiased, dim));
return(new NDArray(ptr));
}
public static NDArray Multiply(NDArray lhs, NDArray rhs, MatMulOp lop = MatMulOp.None, MatMulOp rop = MatMulOp.None)
{
IntPtr ptr;
Internal.VERIFY(AFBlas.af_matmul(out ptr, lhs._ptr, rhs._ptr, (af_mat_prop)lop, (af_mat_prop)rop));
return(new NDArray(ptr));
}
public static NDArray Upper(NDArray arr, bool unitDiagonal = false)
{
IntPtr ptr;
Internal.VERIFY(AFData.af_upper(out ptr, arr._ptr, unitDiagonal));
return(new NDArray(ptr));
}
public static Complex StdDev(NDArray arr)
{
double r, i;
Internal.VERIFY(AFStatistics.af_stdev_all(out r, out i, arr._ptr));
return(new Complex(r, i));
}
public static NDArray TopK(NDArray arr, int k, int dim, int order)
{
IntPtr ptr;
IntPtr idx;
Internal.VERIFY(AFStatistics.af_topk(out ptr, out idx, arr._ptr, k, dim, order));
return(new NDArray(idx));
}
internal Tensor(IntPtr pointer)
{
#if DEBUG
if (pointer == IntPtr.Zero)
{
throw new ArgumentNullException("Invalid Array Pointer");
}
#endif
this._ptr = pointer;
Interlocked.Increment(ref _instances);
if (_instances % 50 == 0) // only do it every time we allocated new 50 instances, we can tweak this
{
UIntPtr bytes, buffers, lockbytes, lockbuffers;
Internal.VERIFY(AFDevice.af_device_mem_info(out bytes, out buffers, out lockbytes, out lockbuffers));
// code borrowed from the R wrapper:
if ((double)lockbytes > Math.Pow(1000, 3) || (double)lockbuffers > 50)
{
GC.Collect();
}
}
}
public static void Print(NDArray arr, string name, int precision = 4)
{
Internal.VERIFY(AFUtil.af_print_array_gen(name, arr._ptr, precision));
}
public static void SetDevice(int device)
{
Internal.VERIFY(AFDevice.af_set_device(device));
}
public static void TransposeInPlace(NDArray arr, bool conjugate)
{
Internal.VERIFY(AFBlas.af_transpose_inplace(arr._ptr, conjugate));
}
public static void PrintInfo()
{
Internal.VERIFY(AFDevice.af_info());
}
public static void SetBackend(Backend backend)
{
Internal.VERIFY(AFBackend.af_set_backend((af_backend)backend));
}
public static void Print(NDArray arr)
{
Internal.VERIFY(AFUtil.af_print_array(arr._ptr));
}