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#include <vigra/timing.hxx>
These macros allow to perform execution speed measurements. Results are reported in milliseconds. However, note that timings below 1 msec are generally subject to round-off errors. Under LINUX, you can #define VIGRA_HIRES_TIMING to get better accuracy, but this requires linking against librt.
Basic usage:
void time_it() { USETICTOC TIC ... code to be timed TOC ... untimed code TIC ... other code to be timed TOC }
Instead of TOC, which outputs the time difference to std::cerr, you may use TOCN (the time difference in msec as a double) or TOCS (the time difference as a std::string).
Alternatively, you can perform nested timing like so:
void time_it() { USE_NESTED_TICTOC TICPUSH ... code to be timed TICPUSH ... nested code to be timed TOC print time for nested code ... more code to be timed TOC print total time }
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