#609·expr

Cast IntegerNode to float32 in operations like `f32 == 1.5`

Author: daisy1754Created Mar 20, 2024Updated Mar 25, 2026
Labelsbug

When you try to compare floating number with floating literal like Number == 12.34, it returns false even when Number is 12.34

Below is code to reproduce https://go.dev/play/p/FFgPkXjIURm

package main

import (
	"fmt"

	"github.com/expr-lang/expr"
)

type Env struct {
	Number float32
}

func main() {
	code := `Number == 12.34`

	program, err := expr.Compile(code, expr.Env(Env{}))
	if err != nil {
		panic(err)
	}

	env := Env{
		Number: 12.34,
	}
	output, err := expr.Run(program, env)
	if err != nil {
		panic(err)
	}

	fmt.Println(output)
}