# Extra Clang Tools 21.1.6 documentation

## clang-tidy - abseil-duration-comparison

# abseil-duration-comparison

Checks for comparisons which should be in the `absl::Duration` domain instead of the floating point or integer domains.

N.B.: In cases where a `Duration` was being converted to an integer and then compared against a floating-point value, truncation during the `Duration` conversion might yield a different result. In practice this is very rare, and still indicates a bug which should be fixed.

Examples:

    // Original - Comparison in the floating point domain
    double x;
    absl::Duration d;
    if (x < absl::ToDoubleSeconds(d)) ...

    // Suggested - Compare in the absl::Duration domain instead
    if (absl::Seconds(x) < d) ...

    // Original - Comparison in the integer domain
    int x;
    absl::Duration d;
    if (x < absl::ToInt64Microseconds(d)) ...

    // Suggested - Compare in the absl::Duration domain instead
    if (absl::Microseconds(x) < d) ...