cos() — internals

cos() — internals

Where it lives

• Signature: src/builtins/math/cos.rs
• Lowering: src/codegen/lower_inst/builtins/math/libm.rs:22 (lower_unary_libm)
• Function symbol: lower_unary_libm()

Lowering notes

• Lowers a one-argument libm builtin such as sin(), cos(), or exp().

Runtime helpers

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

Signature summary

function cos(float $num): float

What the type checker enforces

• Arity: takes exactly 1 argument.

Eval interpreter (magician)

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

Cross-references

• User reference for cos()