number_format() — internals

number_format() — internals

Where it lives

• Signature: src/builtins/string/number_format.rs
• Lowering: src/codegen/lower_inst/builtins/strings.rs:937 (lower_number_format)
• Function symbol: lower_number_format()

Lowering notes

• Lowers number_format() by arranging its runtime helper arguments.

Runtime helpers

The following runtime helpers are referenced:

• __rt_number_format

Signature summary

function number_format(float $num, int $decimals = 0, string $decimal_separator = '.', string $thousands_separator = ','): string

What the type checker enforces

• Arity: takes 1–4 arguments (3 optional).

Eval interpreter (magician)

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

Cross-references

• User reference for number_format()