atan2() — internals

atan2() — internals

Where it lives

• Signature: src/builtins/math/atan2.rs
• Lowering: src/codegen/lower_inst/builtins/math/libm.rs:35 (lower_atan2)
• Function symbol: lower_atan2()

Lowering notes

• Lowers atan2() using the C ABI argument order y, x.

Runtime helpers

No direct __rt_* helpers captured — the lowering is inlined or routes through another builtin.

Signature summary

function atan2(float $y, float $x): float

What the type checker enforces

• Arity: takes exactly 2 arguments.

Eval interpreter (magician)

• Declaration: crates/elephc-magician/src/interpreter/builtins/math/atan2.rs (eval_builtin!)
• Dispatch hooks: direct, values

Cross-references

• User reference for atan2()