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strconv: fix documentation

Browse source 
Also: minor performance fix for large precision results.

benchmark                                   old ns/op    new ns/op    delta
strconv_test.BenchmarkFormatFloatDecimal         2734         2734   +0.00%
strconv_test.BenchmarkFormatFloat                3141         3139   -0.06%
strconv_test.BenchmarkFormatFloatExp             8970         8989   +0.21%
strconv_test.BenchmarkFormatFloatBig             3228         3208   -0.62%

Fixes #2535.

R=rsc
CC=golang-dev
https://golang.org/cl/5435089
This commit is contained in:
Robert Griesemer 2011-12-07 14:45:45 -08:00
parent bab4dec142
commit 2e3bd890c5
2 changed files with 5 additions and 5 deletions
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8
src/pkg/strconv/atoi.go
View file

@ -119,10 +119,10 @@ Error:
return n, &NumError{s0, err}
}
// ParseInt interprets a string s in an arbitrary base b (2 to 36)
// and returns the corresponding value n. If b == 0, the base
// is taken from the string prefix: base 16 for "0x", base 8 for "0",
// and base 10 otherwise.
// ParseInt interprets a string s in the given base (2 to 36) and
// returns the corresponding value i. If base == 0, the base is
// implied by the string's prefix: base 16 for "0x", base 8 for
// "0", and base 10 otherwise.
//
// The bitSize argument specifies the integer type
// that the result must fit into. Bit sizes 0, 8, 16, 32, and 64

2
src/pkg/strconv/ftoa.go
View file

@ -46,7 +46,7 @@ var float64info = floatInfo{52, 11, -1023}
// because correct rounding and the number of digits
// needed to identify f depend on the precision of the representation.
func FormatFloat(f float64, fmt byte, prec, bitSize int) string {
return string(genericFtoa(make([]byte, 0, 16), f, fmt, prec, bitSize))
return string(genericFtoa(make([]byte, 0, max(prec+4, 24)), f, fmt, prec, bitSize))
}
// AppendFloat appends the string form of the floating-point number f,