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Module

x/denops_std/function/mod.ts>atan

📚 Standard module for denops.vim
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function atan
import { atan } from "https://deno.land/x/denops_std@v5.0.2/function/mod.ts";

Return the principal value of the arc tangent of {expr}, in the range [-pi/2, +pi/2] radians, as a Float. {expr} must evaluate to a Float or a Number. Returns 0.0 if {expr} is not a Float or a Number. Examples:

:echo atan(100)

    1.560797

:echo atan(-4.01)

    -1.326405

Can also be used as a method:

Compute()->atan()

Parameters

denops: Denops
expr: unknown

Returns

Promise<number>