Binary Operations

Prefer `@.` for multi-op elementwise expressions so every operator is dotted. Missing a dot silently changes the meaning and can prevent broadcast fusion. See [Kernel Fusion](perf/kernel_fusion.md).

The following binary operations are supported and can be applied elementwise to pairs of NDArray values:

• +, -, *, /, ^, %, <, <=, >, >=, ==, !=, &, |, ⊻, <<, >>, atan, hypot, max, min, lcm, gcd, fld, mod, rem, copysign

muladd.(a, b, c) on three NDArrays is also supported, computed as a .* b .+ c.

Differences from Base Julia

• div / ÷ are not provided. cuPyNumeric floor-divide matches Julia fld (toward -Inf), not truncated div. For example -7 ÷ 2 is -3 in Julia and -4 for fld.

• &, |, ⊻ are integer and Bool bitwise ops. << and >> are integers excluding Bool.

• copysign is float-only.