package ocaml-base-compiler

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Zero-dimensional arrays. The Array0 structure provides operations similar to those of Bigarray.Genarray, but specialized to the case of zero-dimensional arrays that only contain a single scalar value. Statically knowing the number of dimensions of the array allows faster operations, and more precise static type-checking.

since 4.05.0

type (!'a, !'b, !'c) t

The type of zero-dimensional Bigarrays whose elements have OCaml type 'a, representation kind 'b, and memory layout 'c.

val create : ('a, 'b) kind -> 'c layout -> ('a, 'b, 'c) t

Array0.create kind layout returns a new Bigarray of zero dimension. kind and layout determine the array element kind and the array layout as described for Genarray.create.

val init : ('a, 'b) kind -> 'c layout -> 'a -> ('a, 'b, 'c) t

Array0.init kind layout v behaves like Array0.create kind layout except that the element is additionally initialized to the value v.

since 4.12.0

val kind : ('a, 'b, 'c) t -> ('a, 'b) kind

Return the kind of the given Bigarray.

val layout : ('a, 'b, 'c) t -> 'c layout

Return the layout of the given Bigarray.

val change_layout : ('a, 'b, 'c) t -> 'd layout -> ('a, 'b, 'd) t

Array0.change_layout a layout returns a Bigarray with the specified layout, sharing the data with a. No copying of elements is involved: the new array and the original array share the same storage space.

since 4.06.0

val size_in_bytes : ('a, 'b, 'c) t -> int

size_in_bytes a is a's kind_size_in_bytes.

val get : ('a, 'b, 'c) t -> 'a

Array0.get a returns the only element in a.

val set : ('a, 'b, 'c) t -> 'a -> unit

Array0.set a x v stores the value v in a.

val blit : ('a, 'b, 'c) t -> ('a, 'b, 'c) t -> unit

Copy the first Bigarray to the second Bigarray. See Genarray.blit for more details.

val fill : ('a, 'b, 'c) t -> 'a -> unit

Fill the given Bigarray with the given value. See Genarray.fill for more details.

val of_value : ('a, 'b) kind -> 'c layout -> 'a -> ('a, 'b, 'c) t

Build a zero-dimensional Bigarray initialized from the given value.