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bee01ee2ba
Metadata filter output is passed through an Awk script comparing floats against reference values with specified "fuzz" tolerance to account for architectural differences (e.g. x86-32 vs. x86-64). Signed-off-by: Tobias Rapp <t.rapp@noa-archive.com>
65 lines
1.8 KiB
Awk
65 lines
1.8 KiB
Awk
# Compare metadata filter output containing float value strings to reference
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# output data. Returns the whole reference data if delta of each value is below
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# threshold, else returns the whole input data.
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function abs(val) {
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return ((val < 0.0) ? -val : val);
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}
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function max(val1, val2) {
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return ((val1 >= val2) ? val1 : val2);
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}
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function is_numeric_str(str) {
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return (str ~ /^[+-]?[0-9]*\.?[0-9]+$/);
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}
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BEGIN {
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FS = "=";
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# check for "fuzz" (threshold) program parameter, else use default
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if (fuzz <= 0.0) {
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fuzz = 0.1;
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}
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# check for "ref" (reference file) program parameter
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if (ref) {
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ref_nr = 0;
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while ((getline line < ref) > 0) {
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ref_nr++;
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ref_lines[ref_nr] = line;
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if (split(line, fields) == 2 && is_numeric_str(fields[2])) {
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ref_keys[ref_nr] = fields[1];
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ref_vals[ref_nr] = fields[2] + 0; # convert to number
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}
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}
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close(ref);
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}
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delta_max = 0;
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result = (ref ? 1 : 0);
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}
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{
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cmp_lines[NR] = $0;
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if (NF == 2 && is_numeric_str($2) && ref_vals[NR]) {
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val = $2 + 0; # convert to number
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delta = abs((val / ref_vals[NR]) - 1);
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delta_max = max(delta_max, delta);
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result = result && ($1 == ref_keys[NR]) && (delta <= fuzz);
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} else {
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result = result && ($0 == ref_lines[NR]);
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}
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}
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END {
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if (result) {
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for (i = 1; i <= ref_nr; i++)
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print ref_lines[i];
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} else {
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for (i = 1; i <= NR; i++)
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print cmp_lines[i];
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if (NR != ref_nr)
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print "[refcmp] lines: " NR " != " ref_nr > "/dev/stderr";
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if (delta_max >= fuzz)
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print "[refcmp] delta_max: " delta_max " >= " fuzz > "/dev/stderr";
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}
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}
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