bcsqrt()

bcsqrt()

function bcsqrt(string $num, ?int $scale = null): string

Returns the square root of an arbitrary-precision decimal number.

Parameters:

• $num (string)
• $scale (?int), default null, optional

Returns: string

Availability

• Compiled (AOT): supported by the Elephc code generator.
• eval() (magician interpreter): supported — declarative interpreter builtin (crates/elephc-magician/src/interpreter/builtins/math/bcsqrt.rs).

No examples yet — check examples/ and showcases/ for usage patterns.

Internals

For how bcsqrt is implemented in the compiler, see the internals page.