K 10
svn:author
V 6
jilles
K 8
svn:date
V 27
2016-01-30T19:59:58.280341Z
K 7
svn:log
V 394
test: Optimize operator lookup.

The linear search using strcmp() shows up in pmcstat for several percent.

Split the operators into lengths and whether they start with '-' and compare
bytes using == instead of strcmp().

A simple test

sh -c 'i=0; w=$(printf %0100d 7); while [ "$i" -lt 1000000 ]; do
    v=$(printf %sx%s "$w" "$w"); i=$((i+1)); done'

is over 4% faster on an amd64 bhyve VM.

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