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package ber
func UnmarshalInt(b []byte) (i int) {
neg := b[0]&0x80 != 0
for n, v := range b {
if neg {
v = ^v
}
i += int(v) << uint((len(b)-n-1)*8)
}
if neg {
i = ^i
}
return
}
func intLen(i int) (n int) {
for i > 127 {
n++
i >>= 8
}
for i < -128 {
n++
i >>= 8
}
return n + 1
}
func MarshalInt(i int) (b []byte) {
for n := intLen(i); n > 0; n-- {
b = append(b, byte(i>>uint((n-1)*8)))
}
return
}
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