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im_benchmark - do something complicated
#include <vips/vips.h>
int im_benchmark( IMAGE *in, IMAGE *out )
im_benchmark(3)
performs a complicated operation (based on a real example of VIPS usage)
on a LABPACK image. It is useful for benchmarking the VIPS threading system.
It should speed up (mostly) linearly with more CPUs.
The
function returns 0 on success and -1 on error.
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