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strconv: show what fmt package uses for float printing

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The strconv docs are not very helpful for people who just want to pick
a reasonable default, for example the one used by the fmt package to
show floats.

Add an example illustrating what the fmt package uses.

Change-Id: Iefefa70dfd4d4bfa9962a20654ee23662818ef38
Reviewed-on: https://go-review.googlesource.com/c/go/+/463980
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Kevin Burke 2023-01-28 19:56:34 -08:00 committed by Gopher Robot
parent f298b90bc5
commit e1f9499ecf
1 changed files with 5 additions and 0 deletions
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5
src/strconv/example_test.go
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@ -134,9 +134,14 @@ func ExampleFormatFloat() {
s64 := strconv.FormatFloat(v, 'E', -1, 64)
fmt.Printf("%T, %v\n", s64, s64)
// fmt.Println uses these arguments to print floats
fmt64 := strconv.FormatFloat(v, 'g', -1, 64)
fmt.Printf("%T, %v\n", fmt64, fmt64)
// Output:
// string, 3.1415927E+00
// string, 3.1415926535E+00
// string, 3.1415926535
}
func ExampleFormatInt() {