Float Comparisons

Float comparisons push i32 booleans. NaN makes eq false and ne true; all other comparisons with NaN return false.

(module
  (func (export "fcmp") (param $x f32) (param $y f32) (result i32)
    (f32.le (local.get $x) (local.get $y)))
)

Also: f32.eq, f32.ne, f32.lt, f32.gt, f32.ge and all f64.* variants.

Instruction Reference

• f32 Instructions, f64 Instructions