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floating point constant errors in 6g

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R=r
OCL=19379
CL=19379
This commit is contained in:
Russ Cox 2008-11-17 12:33:49 -08:00
parent 75647d2024
commit f333f4685c
1 changed files with 39 additions and 0 deletions
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39
test/bugs/bug120.go Normal file
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// $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG: bug120
// 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 "strconv";
type Test struct {
f float64;
in string;
out string;
}
var tests = []Test {
Test{ 123.5, "123.5", "123.5" },
Test{ 456.7, "456.7", "456.7" },
Test{ 1e23+8.5e6, "1e23+8.5e6", "1.0000000000000001e+23" },
Test{ 100000000000000008388608, "100000000000000008388608", "1.0000000000000001e+23" },
Test{ 1e23+8.388608e6, "1e23+8.388608e6", "1.0000000000000001e+23" },
Test{ 1e23+8.388609e6, "1e23+8.388609e6", "1.0000000000000001e+23" },
}
func main() {
ok := true;
for i := 0; i < len(tests); i++ {
t := tests[i];
v := strconv.ftoa64(t.f, 'g', -1);
if v != t.out {
println("Bad float64 const:", t.in, "want", t.out, "got", v);
ok = false;
}
}
if !ok {
panicln("bug120");
}
}