pi

Description

@pi(x)

• return pi * x
• pi = acos(-1.0) in C

Type Rules

bool    -> f32
i8      -> f32
i16     -> f32
i32     -> f32
i64     -> f64
f32     -> f32
f64     -> f64
complex -> complex
_       -> domain error

Examples

    @pi((0,1):i32)
(0,3.1415926):f32