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58 lines
1.1 KiB
OCaml
58 lines
1.1 KiB
OCaml
(** Contains powers of x, y and z describing the polynomials in atomic basis sets. *)
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type t = private {
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x : int ;
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y : int ;
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z : int ;
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tot : int ; (* x + y + z *)
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}
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val of_int_tuple : int * int * int -> t
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(** Example:
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[of_int_tuple (2,3,1) -> { x=2 ; y=3 ; z=1 ; tot=6 }]
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@raise Invalid_argument if x, y or z < 0.
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*)
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val to_int_tuple : t -> int * int * int
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(** Example:
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[to_int_tuple { x=2 ; y=3 ; z=1 ; tot=6 } -> (2,3,1) ]
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*)
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val get : Coordinate.axis -> t -> int
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(** Example:
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[Powers.get Coordinate.Y { x=2 ; y=3 ; z=1 ; tot=6 } -> 3]
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*)
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val incr : Coordinate.axis -> t -> t
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(** Returns a new {!Powers.t} with the power on the given axis incremented.
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Example:
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{[
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Powers.incr Coordinate.Y { x=2 ; y=3 ; z=1 ; tot=6 } ->
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{ x=2 ; y=4 ; z=1 ; tot=7 }
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]}
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*)
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val decr : Coordinate.axis -> t -> t
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(** Returns a new {!Powers.t} with the power on the given axis decremented.
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As opposed to {!of_int_tuple}, the values may become negative.
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Example:
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{[
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Powers.incr Coordinate.Y { x=2 ; y=3 ; z=1 ; tot=6 } ->
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{ x=2 ; y=2 ; z=1 ; tot=5 }
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]}
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*)
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