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Updated SC2039 (markdown)

Mingye Wang
2020-05-12 13:02:18 +08:00
parent 25180a6788
commit a2aa39371f
1 changed files with 3 additions and 3 deletions
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6
SC2039.md

@@ -94,10 +94,10 @@ POSIX:
The POSIX standard does not allow for exponents. However, you can replicate them completely built-in using a POSIX compatible function. As an example, the `pow` function from [here](http://unix.stackexchange.com/a/7925).
```sh
pow () {
set "$1" "$2" 1
pow() {
set -- "$1" "$2" 1
while [ "$2" -gt 0 ]; do
set "$1" $(($2-1)) $(($1*$3))
set -- "$1" $(($2-1)) $(($1*$3))
done
# %d = signed decimal, %u = unsigned decimal
# Either should overflow to 0