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Source file test/fixedbugs/bug154.go

Documentation: test/fixedbugs

  // run
  
  // Copyright 2009 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"
  
  func f0() string {
  	const f = 3.141592;
  	return fmt.Sprintf("%v", float64(f));
  }
  
  
  func f1() string {
  	const f = 3.141592;
  	x := float64(float32(f));  // appears to change the precision of f
  	_ = x;
  	return fmt.Sprintf("%v", float64(f));
  }
  
  
  func main() {
  	r0 := f0();
  	r1 := f1();
  	if r0 != r1 {
  		println("r0 =", r0);
  		println("r1 =", r1);
  		panic("r0 and r1 should be the same");
  	}
  }
  

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