| 1 |
9533
|
aaronmk
|
#!/bin/bash -e
|
| 2 |
|
|
. "$(dirname "${BASH_SOURCE[0]}")"/util.sh
|
| 3 |
|
|
|
| 4 |
|
|
if self_not_included; then
|
| 5 |
|
|
|
| 6 |
|
|
function binsearch() # usage: min=# max=# binsearch >_cmd args... (uses $i)
|
| 7 |
|
|
# because integer division trucates, $max is *exclusive*
|
| 8 |
|
|
{
|
| 9 |
|
|
echo_func; kw_params min max; : "${min?}" "${max?}"
|
| 10 |
|
|
local min="$min" max="$max" i
|
| 11 |
|
|
while true; do
|
| 12 |
9548
|
aaronmk
|
i=$(( (min + max)/2 )); log+ -2 echo_vars i
|
| 13 |
9533
|
aaronmk
|
if ! (( i > min )); then break; fi
|
| 14 |
9546
|
aaronmk
|
if echo_run "$@"; then min="$i"; echo_vars min
|
| 15 |
9533
|
aaronmk
|
else max="$i"; echo_vars max
|
| 16 |
|
|
fi
|
| 17 |
|
|
done
|
| 18 |
|
|
echo "$i"
|
| 19 |
|
|
}
|
| 20 |
|
|
alias binsearch='"binsearch" ' # last space alias-expands next word
|
| 21 |
|
|
|
| 22 |
|
|
fi
|
