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-rw-r--r--test/fixedbugs/bug120.go60
1 files changed, 0 insertions, 60 deletions
diff --git a/test/fixedbugs/bug120.go b/test/fixedbugs/bug120.go
deleted file mode 100644
index 2a71957d8..000000000
--- a/test/fixedbugs/bug120.go
+++ /dev/null
@@ -1,60 +0,0 @@
-// $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 "os"
-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 + 8388609, "1e23+8388609", "1.0000000000000001e+23"},
-
- // "x" = the floating point value from converting the string x.
- // These are exactly representable in 64-bit floating point:
- // 1e23-8388608
- // 1e23+8388608
- // The former has an even mantissa, so "1e23" rounds to 1e23-8388608.
- // If "1e23+8388608" is implemented as "1e23" + "8388608",
- // that ends up computing 1e23-8388608 + 8388608 = 1e23,
- // which rounds back to 1e23-8388608.
- // The correct answer, of course, would be "1e23+8388608" = 1e23+8388608.
- // This is not going to be correct until 6g has multiprecision floating point.
- // A simpler case is "1e23+1", which should also round to 1e23+8388608.
- Test{1e23 + 8.388608e6, "1e23+8.388608e6", "1.0000000000000001e+23"},
- Test{1e23 + 1, "1e23+1", "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)
- x, err := strconv.Atof64(t.out)
- if err != nil {
- println("bug120: strconv.Atof64", t.out)
- panic("fail")
- }
- println("\twant exact:", strconv.Ftoa64(x, 'g', 1000))
- println("\tgot exact: ", strconv.Ftoa64(t.f, 'g', 1000))
- ok = false
- }
- }
- if !ok {
- os.Exit(1)
- }
-}