shaped-sum ( array axes keepdims? -- result )
NumPy-style shaped-array operations

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Vocabulary
arrays.shaped

Inputs

array	a shaped-array, a sequence, or a number
axes	an integer, a sequence, or f
keepdims?	a boolean

Outputs

result

a shaped-array

Word description
Sums over the specified axes. f selects all axes; an integer selects one axis; a sequence selects several, with an empty sequence selecting none. Negative axes count from the end; duplicates and invalid axes are rejected. With keepdims? true, reduced axes remain with size one. Returns fresh storage, including a zero-rank shaped array when all axes are removed. Empty sums are zero. Arithmetic uses Factor numeric types rather than NumPy dtype promotion.

Definition

USING: arrays.shaped.private kernel math ;

IN: arrays.shaped

: shaped-sum ( array axes keepdims? -- result )
    0 [ + ] reduce-shaped drop ;