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strconv: Document ParseFloat's special cases

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Updates #30990

Change-Id: I968fb13251ab3796328089046a3f0fc5c7eb9df9
Reviewed-on: https://go-review.googlesource.com/c/go/+/174204
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Run-TryBot: Benny Siegert <bsiegert@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Alex Myasoedov 2019-04-28 15:43:46 +03:00 committed by Benny Siegert
parent d016330241
commit 203b80ab86
1 changed files with 29 additions and 0 deletions
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29
src/strconv/example_test.go
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@ -222,10 +222,39 @@ func ExampleParseFloat() {
if s, err := strconv.ParseFloat(v, 64); err == nil { if s, err := strconv.ParseFloat(v, 64); err == nil {
fmt.Printf("%T, %v\n", s, s) fmt.Printf("%T, %v\n", s, s)
} }
if s, err := strconv.ParseFloat("NaN", 32); err == nil {
fmt.Printf("%T, %v\n", s, s)
}
// ParseFloat is case insensitive
if s, err := strconv.ParseFloat("nan", 32); err == nil {
fmt.Printf("%T, %v\n", s, s)
}
if s, err := strconv.ParseFloat("inf", 32); err == nil {
fmt.Printf("%T, %v\n", s, s)
}
if s, err := strconv.ParseFloat("Inf", 32); err == nil {
fmt.Printf("%T, %v\n", s, s)
}
if s, err := strconv.ParseFloat("-Inf", 32); err == nil {
fmt.Printf("%T, %v\n", s, s)
}
if s, err := strconv.ParseFloat("-0", 32); err == nil {
fmt.Printf("%T, %v\n", s, s)
}
if s, err := strconv.ParseFloat("+0", 32); err == nil {
fmt.Printf("%T, %v\n", s, s)
}
// Output: // Output:
// float64, 3.1415927410125732 // float64, 3.1415927410125732
// float64, 3.1415926535 // float64, 3.1415926535
// float64, NaN
// float64, NaN
// float64, +Inf
// float64, +Inf
// float64, -Inf
// float64, -0
// float64, 0
} }
func ExampleParseInt() { func ExampleParseInt() {