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add atol and ltoa. probably want unsigned at some point too.

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R=rsc
DELTA=14  (10 added, 0 deleted, 4 changed)
OCL=17387
CL=17390
This commit is contained in:
Rob Pike 2008-10-17 17:28:09 -07:00
parent 071e963e0e
commit d378321b6e
1 changed files with 14 additions and 4 deletions
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18
src/lib/strings.go
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@ -118,7 +118,7 @@ export func join(a *[]string, sep string) string {
// Convert decimal string to integer.
// TODO: Doesn't check for overflow.
export func atoi(s string) (i int, ok bool) {
export func atol(s string) (i int64, ok bool) {
// empty string bad
if len(s) == 0 {
return 0, false
@ -149,12 +149,12 @@ export func atoi(s string) (i int, ok bool) {
}
// parse number
n := 0;
n := int64(0);
for i := 0; i < len(s); i++ {
if s[i] < '0' || s[i] > '9' {
return 0, false
}
n = n*10 + int(s[i] - '0')
n = n*10 + int64(s[i] - '0')
}
if neg {
n = -n
@ -162,7 +162,13 @@ export func atoi(s string) (i int, ok bool) {
return n, true
}
export func itoa(i int) string {
export func atoi(s string) (i int, ok bool) {
ii, okok := atoi(s);
i = int32(ii);
return i, okok
}
export func itol(i int64) string {
if i == 0 {
return "0"
}
@ -189,3 +195,7 @@ export func itoa(i int) string {
// BUG return string(b[bp:len(b)])
return string((&b)[bp:len(b)])
}
export func itoa(i int) string {
return itol(int64(i));
}