# Type Inference

Differentiation can be applied to functions using the D, DV, and DM types respectively for scalar, vector, and matrix values. 32- and 64-bit floating point varieties of these types are provided by the DiffSharp.AD.Float32 and DiffSharp.AD.Float64 modules. On many current systems, 32-bit (single) precision floating point operations run significantly faster than 64-bit (double) precision. It is therefore recommended to use the 32-bit module if this precision is sufficient for your usage case.

The library automatically instantiates dual numbers (for forward AD) and/or adjoints (for reverse AD) as needed, using the best one for a given differentiation operation.

DiffSharp supports nested AD, which means that you can evaluate derivatives of functions that may themselves be internally using derivatives, up to arbitrary level. All emerging higher-order derivatives are automatically handled by the library and computed exactly and efficiently.

In summary, you need to write the part of your numeric code where you need derivatives (e.g., for optimization) using the D, DV, and DM numeric types, which you may convert to or from integral types such as float, float[], and float[,].

## Converting to and from D, DV, DM

  1: 2: 3: 4: 5: 6: 7: 8: 9: 10: 11: 12: 13: 14: 15:  open DiffSharp.AD.Float64 let s1 = D 2.6 // Create D from float let s2 = float s1 // Convert D to float let s3:float = convert s1 // Convert D to float let v1 = DV [|1.; 2.; 3.|] // Create DV from float[] let v2 = toDV [1.; 2.; 3.] // Create DV from sequence of floats let v3 = toDV [|1.; 2.; 3.|] // Create DV from sequence of floats let v4 = toDV [D 1.; D 2.; D 3.] // Create DV from sequence of Ds let v5:float[] = convert v1 // Convert to array of floats let m1 = DM (array2D [[1.; 2.] ; [3.; 4.]]) // Create DM from float[,] let m2 = toDM [[1.; 2.]; [3.; 4.]] // Create DM from sequence of sequences of floats let m3:float[,] = convert m1 // Convert to float[,] 

There are several ways the type inference system can work together with DiffSharp, when defining your functions.

### Lambda Expressions

The simplest and easiest way is to define functions using lambda expressions after differentiation operators. The expression will automatically assume the required signature.

(You can hover the pointer over the examples to check their types.)

 1: 2: 3: 4: 5: 6: 7: 8:  open DiffSharp.AD.Float64 // The lambda expression after "diff": D -> D // df: D -> D, the derivative of Sin(Sqrt(x)) let df = diff (fun x -> sin (sqrt x)) // Use df to compute the derivative at 2 let vdf = df (D 2.) 

The library also provides differentiation operators that return the original function value and the derivative values at the same time. This is advantageous because, in many cases, original values and derivatives are computed during the same execution of the code.

 1: 2: 3: 4: 5:  // df2: D -> (D * D), the original value and the derivative of Sin(Sqrt(x)) let df2 = diff' (fun x -> sin (sqrt x)) // Compute Sin(Sqrt(x)) and its derivative at 2 let vf2, vdf2 = df2 (D 2.) 

### Existing Functions

When you have an existing function, just opening the DiffSharp library and using a differentiation operation is sufficient in some cases for enforcing the required signature.

 1: 2:  // f3: float -> float let f3 x = sin (sqrt x) 
 1: 2: 3: 4: 5: 6: 7:  open DiffSharp.AD.Float64 // f4 has the same definition with f3, yet here D type is inferred automatically // f4: D -> D let f4 x = sin (sqrt x) let df4 = diff f4 

### Generic Functions

In the previous example, f4 assumes the D -> D type and therefore cannot be used with other types, for example float. We can get around this by defining generic numeric functions that can work with multiple types, by using inline.

 1: 2: 3: 4: 5: 6: 7: 8: 9:  // f5 is the generic version of f4 // f5: 'a -> 'b let inline f5 x = sin (sqrt x) // Here f5 behaves as float -> float let vf5 = f5 2. // Here f5 behaves as D -> D let df5 = diff f5 (D 2.) 

Existing functions with numeric literals in their definition cannot assume the required signature, because literals cause the compiler to infer specific types of arithmetic (such as 3. for float or 3 for int ).

 1: 2:  // f6: float -> float let f6 x = sin (3. * sqrt x) 

In such cases, AD-enabled types should be explicitly used in one or more places in the function definition.

Usually, a function's signature can be altered without having to change the type of all involved values. For example, "injecting" some Ds into a large float expression will cause the whole expression to assume the D type.

Explicitly marking an argument as D:

 1: 2:  // f7: D -> D let f7 (x:D) = sin (3. * sqrt x) 

Converting a float into D:

 1: 2:  // f8: D -> D let f8 x = sin ((D 3.) * sqrt x) 
namespace DiffSharp
module Float64

val s1 : D

Full name: Gettingstarted-typeinference.s1
union case D.D: float -> D
val s2 : float

Full name: Gettingstarted-typeinference.s2
Multiple items
val float : value:'T -> float (requires member op_Explicit)

Full name: Microsoft.FSharp.Core.Operators.float

--------------------
type float = System.Double

Full name: Microsoft.FSharp.Core.float

--------------------
type float<'Measure> = float

Full name: Microsoft.FSharp.Core.float<_>
val s3 : float

Full name: Gettingstarted-typeinference.s3
val convert : v:'a -> 'b (requires member op_Explicit)

val v1 : DV

Full name: Gettingstarted-typeinference.v1
Multiple items
union case DV.DV: float [] -> DV

--------------------
module DV

--------------------
type DV =
| DV of float []
| DVF of DV * DV * uint32
| DVR of DV * DV ref * TraceOp * uint32 ref * uint32
member Copy : unit -> DV
member GetForward : t:DV * i:uint32 -> DV
member GetReverse : i:uint32 -> DV
member GetSlice : lower:int option * upper:int option -> DV
member ToArray : unit -> D []
member ToColDM : unit -> DM
member ToMathematicaString : unit -> string
member ToMatlabString : unit -> string
member ToRowDM : unit -> DM
override ToString : unit -> string
member Visualize : unit -> string
member A : DV
member F : uint32
member Item : i:int -> D with get
member Length : int
member P : DV
member PD : DV
member T : DV
member A : DV with set
member F : uint32 with set
static member Abs : a:DV -> DV
static member Acos : a:DV -> DV
static member AddItem : a:DV * i:int * b:D -> DV
static member AddSubVector : a:DV * i:int * b:DV -> DV
static member Append : a:DV * b:DV -> DV
static member Asin : a:DV -> DV
static member Atan : a:DV -> DV
static member Atan2 : a:int * b:DV -> DV
static member Atan2 : a:DV * b:int -> DV
static member Atan2 : a:float * b:DV -> DV
static member Atan2 : a:DV * b:float -> DV
static member Atan2 : a:D * b:DV -> DV
static member Atan2 : a:DV * b:D -> DV
static member Atan2 : a:DV * b:DV -> DV
static member Ceiling : a:DV -> DV
static member Cos : a:DV -> DV
static member Cosh : a:DV -> DV
static member Exp : a:DV -> DV
static member Floor : a:DV -> DV
static member L1Norm : a:DV -> D
static member L2Norm : a:DV -> D
static member L2NormSq : a:DV -> D
static member Log : a:DV -> DV
static member Log10 : a:DV -> DV
static member LogSumExp : a:DV -> D
static member Max : a:DV -> D
static member Max : a:D * b:DV -> DV
static member Max : a:DV * b:D -> DV
static member Max : a:DV * b:DV -> DV
static member MaxIndex : a:DV -> int
static member Mean : a:DV -> D
static member Min : a:DV -> D
static member Min : a:D * b:DV -> DV
static member Min : a:DV * b:D -> DV
static member Min : a:DV * b:DV -> DV
static member MinIndex : a:DV -> int
static member Normalize : a:DV -> DV
static member OfArray : a:D [] -> DV
static member Op_DV_D : a:DV * ff:(float [] -> float) * fd:(DV -> D) * df:(D * DV * DV -> D) * r:(DV -> TraceOp) -> D
static member Op_DV_DM : a:DV * ff:(float [] -> float [,]) * fd:(DV -> DM) * df:(DM * DV * DV -> DM) * r:(DV -> TraceOp) -> DM
static member Op_DV_DV : a:DV * ff:(float [] -> float []) * fd:(DV -> DV) * df:(DV * DV * DV -> DV) * r:(DV -> TraceOp) -> DV
static member Op_DV_DV_D : a:DV * b:DV * ff:(float [] * float [] -> float) * fd:(DV * DV -> D) * df_da:(D * DV * DV -> D) * df_db:(D * DV * DV -> D) * df_dab:(D * DV * DV * DV * DV -> D) * r_d_d:(DV * DV -> TraceOp) * r_d_c:(DV * DV -> TraceOp) * r_c_d:(DV * DV -> TraceOp) -> D
static member Op_DV_DV_DM : a:DV * b:DV * ff:(float [] * float [] -> float [,]) * fd:(DV * DV -> DM) * df_da:(DM * DV * DV -> DM) * df_db:(DM * DV * DV -> DM) * df_dab:(DM * DV * DV * DV * DV -> DM) * r_d_d:(DV * DV -> TraceOp) * r_d_c:(DV * DV -> TraceOp) * r_c_d:(DV * DV -> TraceOp) -> DM
static member Op_DV_DV_DV : a:DV * b:DV * ff:(float [] * float [] -> float []) * fd:(DV * DV -> DV) * df_da:(DV * DV * DV -> DV) * df_db:(DV * DV * DV -> DV) * df_dab:(DV * DV * DV * DV * DV -> DV) * r_d_d:(DV * DV -> TraceOp) * r_d_c:(DV * DV -> TraceOp) * r_c_d:(DV * DV -> TraceOp) -> DV
static member Op_DV_D_DV : a:DV * b:D * ff:(float [] * float -> float []) * fd:(DV * D -> DV) * df_da:(DV * DV * DV -> DV) * df_db:(DV * D * D -> DV) * df_dab:(DV * DV * DV * D * D -> DV) * r_d_d:(DV * D -> TraceOp) * r_d_c:(DV * D -> TraceOp) * r_c_d:(DV * D -> TraceOp) -> DV
static member Op_D_DV_DV : a:D * b:DV * ff:(float * float [] -> float []) * fd:(D * DV -> DV) * df_da:(DV * D * D -> DV) * df_db:(DV * DV * DV -> DV) * df_dab:(DV * D * D * DV * DV -> DV) * r_d_d:(D * DV -> TraceOp) * r_d_c:(D * DV -> TraceOp) * r_c_d:(D * DV -> TraceOp) -> DV
static member Pow : a:int * b:DV -> DV
static member Pow : a:DV * b:int -> DV
static member Pow : a:float * b:DV -> DV
static member Pow : a:DV * b:float -> DV
static member Pow : a:D * b:DV -> DV
static member Pow : a:DV * b:D -> DV
static member Pow : a:DV * b:DV -> DV
static member ReLU : a:DV -> DV
static member ReshapeToDM : m:int * a:DV -> DM
static member Round : a:DV -> DV
static member Sigmoid : a:DV -> DV
static member Sign : a:DV -> DV
static member Sin : a:DV -> DV
static member Sinh : a:DV -> DV
static member SoftMax : a:DV -> DV
static member SoftPlus : a:DV -> DV
static member SoftSign : a:DV -> DV
static member Split : d:DV * n:seq<int> -> seq<DV>
static member Sqrt : a:DV -> DV
static member StandardDev : a:DV -> D
static member Standardize : a:DV -> DV
static member Sum : a:DV -> D
static member Tan : a:DV -> DV
static member Tanh : a:DV -> DV
static member Variance : a:DV -> D
static member ZeroN : n:int -> DV
static member Zero : DV
static member ( + ) : a:int * b:DV -> DV
static member ( + ) : a:DV * b:int -> DV
static member ( + ) : a:float * b:DV -> DV
static member ( + ) : a:DV * b:float -> DV
static member ( + ) : a:D * b:DV -> DV
static member ( + ) : a:DV * b:D -> DV
static member ( + ) : a:DV * b:DV -> DV
static member ( &* ) : a:DV * b:DV -> DM
static member ( / ) : a:int * b:DV -> DV
static member ( / ) : a:DV * b:int -> DV
static member ( / ) : a:float * b:DV -> DV
static member ( / ) : a:DV * b:float -> DV
static member ( / ) : a:D * b:DV -> DV
static member ( / ) : a:DV * b:D -> DV
static member ( ./ ) : a:DV * b:DV -> DV
static member ( .* ) : a:DV * b:DV -> DV
static member op_Explicit : d:float [] -> DV
static member op_Explicit : d:DV -> float []
static member ( * ) : a:int * b:DV -> DV
static member ( * ) : a:DV * b:int -> DV
static member ( * ) : a:float * b:DV -> DV
static member ( * ) : a:DV * b:float -> DV
static member ( * ) : a:D * b:DV -> DV
static member ( * ) : a:DV * b:D -> DV
static member ( * ) : a:DV * b:DV -> D
static member ( - ) : a:int * b:DV -> DV
static member ( - ) : a:DV * b:int -> DV
static member ( - ) : a:float * b:DV -> DV
static member ( - ) : a:DV * b:float -> DV
static member ( - ) : a:D * b:DV -> DV
static member ( - ) : a:DV * b:D -> DV
static member ( - ) : a:DV * b:DV -> DV
static member ( ~- ) : a:DV -> DV

val v2 : DV

Full name: Gettingstarted-typeinference.v2
val toDV : v:seq<'a> -> DV (requires member op_Explicit)

val v3 : DV

Full name: Gettingstarted-typeinference.v3
val v4 : DV

Full name: Gettingstarted-typeinference.v4
val v5 : float []

Full name: Gettingstarted-typeinference.v5
val m1 : DM

Full name: Gettingstarted-typeinference.m1
Multiple items
union case DM.DM: float [,] -> DM

--------------------
module DM

--------------------
type DM =
| DM of float [,]
| DMF of DM * DM * uint32
| DMR of DM * DM ref * TraceOp * uint32 ref * uint32
member Copy : unit -> DM
member GetCols : unit -> seq<DV>
member GetForward : t:DM * i:uint32 -> DM
member GetReverse : i:uint32 -> DM
member GetRows : unit -> seq<DV>
member GetSlice : rowStart:int option * rowFinish:int option * col:int -> DV
member GetSlice : row:int * colStart:int option * colFinish:int option -> DV
member GetSlice : rowStart:int option * rowFinish:int option * colStart:int option * colFinish:int option -> DM
member ToMathematicaString : unit -> string
member ToMatlabString : unit -> string
override ToString : unit -> string
member Visualize : unit -> string
member A : DM
member Cols : int
member F : uint32
member Item : i:int * j:int -> D with get
member Length : int
member P : DM
member PD : DM
member Rows : int
member T : DM
member A : DM with set
member F : uint32 with set
static member Abs : a:DM -> DM
static member Acos : a:DM -> DM
static member AddDiagonal : a:DM * b:DV -> DM
static member AddItem : a:DM * i:int * j:int * b:D -> DM
static member AddSubMatrix : a:DM * i:int * j:int * b:DM -> DM
static member Asin : a:DM -> DM
static member Atan : a:DM -> DM
static member Atan2 : a:int * b:DM -> DM
static member Atan2 : a:DM * b:int -> DM
static member Atan2 : a:float * b:DM -> DM
static member Atan2 : a:DM * b:float -> DM
static member Atan2 : a:D * b:DM -> DM
static member Atan2 : a:DM * b:D -> DM
static member Atan2 : a:DM * b:DM -> DM
static member Ceiling : a:DM -> DM
static member Cos : a:DM -> DM
static member Cosh : a:DM -> DM
static member Det : a:DM -> D
static member Diagonal : a:DM -> DV
static member Exp : a:DM -> DM
static member Floor : a:DM -> DM
static member Inverse : a:DM -> DM
static member Log : a:DM -> DM
static member Log10 : a:DM -> DM
static member Max : a:DM -> D
static member Max : a:D * b:DM -> DM
static member Max : a:DM * b:D -> DM
static member Max : a:DM * b:DM -> DM
static member MaxIndex : a:DM -> int * int
static member Mean : a:DM -> D
static member Min : a:DM -> D
static member Min : a:D * b:DM -> DM
static member Min : a:DM * b:D -> DM
static member Min : a:DM * b:DM -> DM
static member MinIndex : a:DM -> int * int
static member Normalize : a:DM -> DM
static member OfArray : m:int * a:D [] -> DM
static member OfArray2D : a:D [,] -> DM
static member OfCols : n:int * a:DV -> DM
static member OfRows : s:seq<DV> -> DM
static member OfRows : m:int * a:DV -> DM
static member Op_DM_D : a:DM * ff:(float [,] -> float) * fd:(DM -> D) * df:(D * DM * DM -> D) * r:(DM -> TraceOp) -> D
static member Op_DM_DM : a:DM * ff:(float [,] -> float [,]) * fd:(DM -> DM) * df:(DM * DM * DM -> DM) * r:(DM -> TraceOp) -> DM
static member Op_DM_DM_DM : a:DM * b:DM * ff:(float [,] * float [,] -> float [,]) * fd:(DM * DM -> DM) * df_da:(DM * DM * DM -> DM) * df_db:(DM * DM * DM -> DM) * df_dab:(DM * DM * DM * DM * DM -> DM) * r_d_d:(DM * DM -> TraceOp) * r_d_c:(DM * DM -> TraceOp) * r_c_d:(DM * DM -> TraceOp) -> DM
static member Op_DM_DV : a:DM * ff:(float [,] -> float []) * fd:(DM -> DV) * df:(DV * DM * DM -> DV) * r:(DM -> TraceOp) -> DV
static member Op_DM_DV_DM : a:DM * b:DV * ff:(float [,] * float [] -> float [,]) * fd:(DM * DV -> DM) * df_da:(DM * DM * DM -> DM) * df_db:(DM * DV * DV -> DM) * df_dab:(DM * DM * DM * DV * DV -> DM) * r_d_d:(DM * DV -> TraceOp) * r_d_c:(DM * DV -> TraceOp) * r_c_d:(DM * DV -> TraceOp) -> DM
static member Op_DM_DV_DV : a:DM * b:DV * ff:(float [,] * float [] -> float []) * fd:(DM * DV -> DV) * df_da:(DV * DM * DM -> DV) * df_db:(DV * DV * DV -> DV) * df_dab:(DV * DM * DM * DV * DV -> DV) * r_d_d:(DM * DV -> TraceOp) * r_d_c:(DM * DV -> TraceOp) * r_c_d:(DM * DV -> TraceOp) -> DV
static member Op_DM_D_DM : a:DM * b:D * ff:(float [,] * float -> float [,]) * fd:(DM * D -> DM) * df_da:(DM * DM * DM -> DM) * df_db:(DM * D * D -> DM) * df_dab:(DM * DM * DM * D * D -> DM) * r_d_d:(DM * D -> TraceOp) * r_d_c:(DM * D -> TraceOp) * r_c_d:(DM * D -> TraceOp) -> DM
static member Op_DV_DM_DM : a:DV * b:DM * ff:(float [] * float [,] -> float [,]) * fd:(DV * DM -> DM) * df_da:(DM * DV * DV -> DM) * df_db:(DM * DM * DM -> DM) * df_dab:(DM * DV * DV * DM * DM -> DM) * r_d_d:(DV * DM -> TraceOp) * r_d_c:(DV * DM -> TraceOp) * r_c_d:(DV * DM -> TraceOp) -> DM
static member Op_DV_DM_DV : a:DV * b:DM * ff:(float [] * float [,] -> float []) * fd:(DV * DM -> DV) * df_da:(DV * DV * DV -> DV) * df_db:(DV * DM * DM -> DV) * df_dab:(DV * DV * DV * DM * DM -> DV) * r_d_d:(DV * DM -> TraceOp) * r_d_c:(DV * DM -> TraceOp) * r_c_d:(DV * DM -> TraceOp) -> DV
static member Op_D_DM_DM : a:D * b:DM * ff:(float * float [,] -> float [,]) * fd:(D * DM -> DM) * df_da:(DM * D * D -> DM) * df_db:(DM * DM * DM -> DM) * df_dab:(DM * D * D * DM * DM -> DM) * r_d_d:(D * DM -> TraceOp) * r_d_c:(D * DM -> TraceOp) * r_c_d:(D * DM -> TraceOp) -> DM
static member Pow : a:int * b:DM -> DM
static member Pow : a:DM * b:int -> DM
static member Pow : a:float * b:DM -> DM
static member Pow : a:DM * b:float -> DM
static member Pow : a:D * b:DM -> DM
static member Pow : a:DM * b:D -> DM
static member Pow : a:DM * b:DM -> DM
static member ReLU : a:DM -> DM
static member ReshapeToDV : a:DM -> DV
static member Round : a:DM -> DM
static member Sigmoid : a:DM -> DM
static member Sign : a:DM -> DM
static member Sin : a:DM -> DM
static member Sinh : a:DM -> DM
static member SoftPlus : a:DM -> DM
static member SoftSign : a:DM -> DM
static member Solve : a:DM * b:DV -> DV
static member SolveSymmetric : a:DM * b:DV -> DV
static member Sqrt : a:DM -> DM
static member StandardDev : a:DM -> D
static member Standardize : a:DM -> DM
static member Sum : a:DM -> D
static member Tan : a:DM -> DM
static member Tanh : a:DM -> DM
static member Trace : a:DM -> D
static member Transpose : a:DM -> DM
static member Variance : a:DM -> D
static member ZeroMN : m:int -> n:int -> DM
static member Zero : DM
static member ( + ) : a:int * b:DM -> DM
static member ( + ) : a:DM * b:int -> DM
static member ( + ) : a:float * b:DM -> DM
static member ( + ) : a:DM * b:float -> DM
static member ( + ) : a:DM * b:DV -> DM
static member ( + ) : a:DV * b:DM -> DM
static member ( + ) : a:D * b:DM -> DM
static member ( + ) : a:DM * b:D -> DM
static member ( + ) : a:DM * b:DM -> DM
static member ( / ) : a:int * b:DM -> DM
static member ( / ) : a:DM * b:int -> DM
static member ( / ) : a:float * b:DM -> DM
static member ( / ) : a:DM * b:float -> DM
static member ( / ) : a:D * b:DM -> DM
static member ( / ) : a:DM * b:D -> DM
static member ( ./ ) : a:DM * b:DM -> DM
static member ( .* ) : a:DM * b:DM -> DM
static member op_Explicit : d:float [,] -> DM
static member op_Explicit : d:DM -> float [,]
static member ( * ) : a:int * b:DM -> DM
static member ( * ) : a:DM * b:int -> DM
static member ( * ) : a:float * b:DM -> DM
static member ( * ) : a:DM * b:float -> DM
static member ( * ) : a:D * b:DM -> DM
static member ( * ) : a:DM * b:D -> DM
static member ( * ) : a:DV * b:DM -> DV
static member ( * ) : a:DM * b:DV -> DV
static member ( * ) : a:DM * b:DM -> DM
static member ( - ) : a:int * b:DM -> DM
static member ( - ) : a:DM * b:int -> DM
static member ( - ) : a:float * b:DM -> DM
static member ( - ) : a:DM * b:float -> DM
static member ( - ) : a:D * b:DM -> DM
static member ( - ) : a:DM * b:D -> DM
static member ( - ) : a:DM * b:DM -> DM
static member ( ~- ) : a:DM -> DM

val array2D : rows:seq<#seq<'T>> -> 'T [,]

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.array2D
val m2 : DM

Full name: Gettingstarted-typeinference.m2
val toDM : m:seq<seq<'a>> -> DM (requires member op_Explicit)

val m3 : float [,]

Full name: Gettingstarted-typeinference.m3
val df : (D -> D)

Full name: Gettingstarted-typeinference.df
val diff : f:(D -> 'c) -> x:D -> 'c (requires member get_P and member get_T)

val x : D
val sin : value:'T -> 'T (requires member Sin)

Full name: Microsoft.FSharp.Core.Operators.sin
val sqrt : value:'T -> 'U (requires member Sqrt)

Full name: Microsoft.FSharp.Core.Operators.sqrt
val vdf : D

Full name: Gettingstarted-typeinference.vdf
val df2 : (D -> D * D)

Full name: Gettingstarted-typeinference.df2
val diff' : f:(D -> 'a) -> x:D -> 'a * 'a (requires member get_T and member get_P)

val vf2 : D

Full name: Gettingstarted-typeinference.vf2
val vdf2 : D

Full name: Gettingstarted-typeinference.vdf2
val f3 : x:float -> float

Full name: Gettingstarted-typeinference.f3
val x : float
val f4 : x:D -> D

Full name: Gettingstarted-typeinference.f4
val df4 : (D -> D)

Full name: Gettingstarted-typeinference.df4
val f5 : x:'a -> 'b (requires member Sqrt and member Sin)

Full name: Gettingstarted-typeinference.f5
val x : 'a (requires member Sqrt and member Sin)
val vf5 : float

Full name: Gettingstarted-typeinference.vf5
val df5 : D

Full name: Gettingstarted-typeinference.df5
val f6 : x:float -> float

Full name: Gettingstarted-typeinference.f6
val f7 : x:D -> D

Full name: Gettingstarted-typeinference.f7
type D =
| D of float
| DF of D * D * uint32
| DR of D * D ref * TraceOp * uint32 ref * uint32
interface IComparable
member Copy : unit -> D
override Equals : other:obj -> bool
member GetForward : t:D * i:uint32 -> D
override GetHashCode : unit -> int
member GetReverse : i:uint32 -> D
override ToString : unit -> string
member A : D
member F : uint32
member P : D
member PD : D
member T : D
member A : D with set
member F : uint32 with set
static member Abs : a:D -> D
static member Acos : a:D -> D
static member Asin : a:D -> D
static member Atan : a:D -> D
static member Atan2 : a:int * b:D -> D
static member Atan2 : a:D * b:int -> D
static member Atan2 : a:float * b:D -> D
static member Atan2 : a:D * b:float -> D
static member Atan2 : a:D * b:D -> D
static member Ceiling : a:D -> D
static member Cos : a:D -> D
static member Cosh : a:D -> D
static member Exp : a:D -> D
static member Floor : a:D -> D
static member Log : a:D -> D
static member Log10 : a:D -> D
static member LogSumExp : a:D -> D
static member Max : a:D * b:D -> D
static member Min : a:D * b:D -> D
static member Op_D_D : a:D * ff:(float -> float) * fd:(D -> D) * df:(D * D * D -> D) * r:(D -> TraceOp) -> D
static member Op_D_D_D : a:D * b:D * ff:(float * float -> float) * fd:(D * D -> D) * df_da:(D * D * D -> D) * df_db:(D * D * D -> D) * df_dab:(D * D * D * D * D -> D) * r_d_d:(D * D -> TraceOp) * r_d_c:(D * D -> TraceOp) * r_c_d:(D * D -> TraceOp) -> D
static member Pow : a:int * b:D -> D
static member Pow : a:D * b:int -> D
static member Pow : a:float * b:D -> D
static member Pow : a:D * b:float -> D
static member Pow : a:D * b:D -> D
static member ReLU : a:D -> D
static member Round : a:D -> D
static member Sigmoid : a:D -> D
static member Sign : a:D -> D
static member Sin : a:D -> D
static member Sinh : a:D -> D
static member SoftPlus : a:D -> D
static member SoftSign : a:D -> D
static member Sqrt : a:D -> D
static member Tan : a:D -> D
static member Tanh : a:D -> D
static member One : D
static member Zero : D
static member ( + ) : a:int * b:D -> D
static member ( + ) : a:D * b:int -> D
static member ( + ) : a:float * b:D -> D
static member ( + ) : a:D * b:float -> D
static member ( + ) : a:D * b:D -> D
static member ( / ) : a:int * b:D -> D
static member ( / ) : a:D * b:int -> D
static member ( / ) : a:float * b:D -> D
static member ( / ) : a:D * b:float -> D
static member ( / ) : a:D * b:D -> D
static member op_Explicit : d:D -> float
static member ( * ) : a:int * b:D -> D
static member ( * ) : a:D * b:int -> D
static member ( * ) : a:float * b:D -> D
static member ( * ) : a:D * b:float -> D
static member ( * ) : a:D * b:D -> D
static member ( - ) : a:int * b:D -> D
static member ( - ) : a:D * b:int -> D
static member ( - ) : a:float * b:D -> D
static member ( - ) : a:D * b:float -> D
static member ( - ) : a:D * b:D -> D
static member ( ~- ) : a:D -> D