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// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"fmt"
"os"
)
//go:noinline
func f(x float64) float64 {
return x
}
func inlineFma(x, y, z float64) float64 {
return x + y*z
}
func main() {
w, x, y := 1.0, 1.0, 1.0
x = f(x + x/(1<<52))
w = f(w / (1 << 27))
y = f(y + y/(1<<52))
w0 := f(2 * w * (1 - w))
w1 := f(w * (1 + w))
x = x + w0*w1
x = inlineFma(x, w0, w1)
y = y + f(w0*w1)
y = y + f(w0*w1)
fmt.Println(x, y, x-y)
if x != y {
os.Exit(1)
}
}