$ bash -e -o pipefail -c make test && ./app < examples/input.txt
cc -std=c17 -Wall -Wextra -Werror -pedantic -O2 src/main.c -lm -o app
./app --self-test
sine and zero tests passed
rms=0.707107 crest=1.414214 dominant_hz=8.000000 amplitude=0.999960

$ ./app
rms=0.707107 crest=1.414214 dominant_hz=8.000000 amplitude=0.999960

$ ./app
at least eight samples required

$ ./app
invalid finite number

$ ./app --unsupported
unsupported command arguments

$ ./app
input record too large