Wasmex.Memory.grow

You're seeing just the function grow, go back to Wasmex.Memory module for more information.
Link to this function

grow(memory, pages)

Specs

grow(t(), pos_integer()) :: pos_integer()

Grows the amount of available memory by the given number of pages and returns the number of previously available pages. Note that the maximum number of pages is 65_536

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grow(memory, size, offset, pages)

Specs

grow(t(), atom(), non_neg_integer(), pos_integer()) :: pos_integer()