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big: minor comment adjustments

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R=mtj, r
CC=golang-dev
https://golang.org/cl/4814044
This commit is contained in:
Robert Griesemer 2011-07-21 15:01:58 -07:00
parent 12c736158a
commit e109a2bb8c
1 changed files with 12 additions and 9 deletions
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21
src/pkg/big/int.go
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@ -329,9 +329,9 @@ func writeMultiple(s fmt.State, text string, count int) {
// Format is a support routine for fmt.Formatter. It accepts
// the formats 'b' (binary), 'o' (octal), 'd' (decimal), 'x'
// (lowercase hexadecimal), and 'X' (uppercase hexadecimal).
// Also supported are the full suite of "Printf" style format
// codes for integral types, including PLUS, MINUS, and SPACE
// for sign control, HASH for leading ZERO in octal and for
// Also supported are the full suite of package fmt's format
// verbs for integral types, including '+', '-', and ' '
// for sign control, '#' for leading zero in octal and for
// hexadecimal, a leading "0x" or "0X" for "%#x" and "%#X"
// respectively, specification of minimum digits precision,
// output field width, space or zero padding, and left or
@ -378,9 +378,9 @@ func (x *Int) Format(s fmt.State, ch int) {
// determine digits with base set by len(cs) and digit characters from cs
digits := x.abs.string(cs)
// number of characters for the Sprintf family's three classes of number padding
// number of characters for the three classes of number padding
var left int // space characters to left of digits for right justification ("%8d")
var zeroes int // zero characters (acutally cs[0]) as left-most digits ("%.8d")
var zeroes int // zero characters (actually cs[0]) as left-most digits ("%.8d")
var right int // space characters to right of digits for left justification ("%-8d")
// determine number padding from precision: the least number of digits to output
@ -398,16 +398,19 @@ func (x *Int) Format(s fmt.State, ch int) {
length := len(sign) + len(prefix) + zeroes + len(digits)
if width, widthSet := s.Width(); widthSet && length < width { // pad as specified
switch d := width - length; {
case s.Flag('-'): // pad on the right with spaces. supersedes '0' when both specified
case s.Flag('-'):
// pad on the right with spaces; supersedes '0' when both specified
right = d
case s.Flag('0') && !precisionSet: // pad with zeroes unless precision also specified
case s.Flag('0') && !precisionSet:
// pad with zeroes unless precision also specified
zeroes = d
default: // pad on the left with spaces
default:
// pad on the left with spaces
left = d
}
}
// print Int as [left pad][sign][prefix][zero pad][digits][right pad]
// print number as [left pad][sign][prefix][zero pad][digits][right pad]
writeMultiple(s, " ", left)
writeMultiple(s, sign, 1)
writeMultiple(s, prefix, 1)