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Hoist bounds check in dddToByte

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This eliminates two of the bounds checks in dddToByte and
dddStringToByte.
This commit is contained in:
Tom Thorogood 2018-11-26 11:52:43 +10:30
parent 2eeda8aabc
commit ab9dd29c1d
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1 changed files with 2 additions and 0 deletions
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2
msg.go
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@ -528,10 +528,12 @@ func unpackTxt(msg []byte, off0 int) (ss []string, off int, err error) {
func isDigit(b byte) bool { return b >= '0' && b <= '9' } func isDigit(b byte) bool { return b >= '0' && b <= '9' }
func dddToByte(s []byte) byte { func dddToByte(s []byte) byte {
_ = s[2]
return byte((s[0]-'0')*100 + (s[1]-'0')*10 + (s[2] - '0')) return byte((s[0]-'0')*100 + (s[1]-'0')*10 + (s[2] - '0'))
} }
func dddStringToByte(s string) byte { func dddStringToByte(s string) byte {
_ = s[2]
return byte((s[0]-'0')*100 + (s[1]-'0')*10 + (s[2] - '0')) return byte((s[0]-'0')*100 + (s[1]-'0')*10 + (s[2] - '0'))
} }