maximum

const maximum: (aIn, bIn, …rest) => Var

Elementwise maximum, broadcasting a scalar against anything.

The subgradient at a tie is a convention, not a derivation: when a === b the whole adjoint goes to the LEFT operand, so maximum(x, 0) at x = 0 reports dx = 1. Deterministic and cheap, and the caller landing exactly on the tie can predict which way it falls. Splitting the adjoint evenly would be defensible too, but it is not what this does.

Math.max is the forward, so a NaN operand propagates rather than being quietly outranked. A sampler stepping outside a support needs the non-finite value to reach it.

Parameters

aIn

any

bIn

any

rest

…any[]

Returns

Var