// Zero out (set to 0, black) the image region.
// Only the pixels (and channels) in dst that are specified by roi will be altered;
// the default roi is to alter all the pixels in dst.
// If dst is uninitialized, it will be resized to be a float ImageBuf large enough to
// hold the region specified by roi. It is an error to pass both an uninitialied dst and an undefined roi.
// Works on all pixel data types.
func Zero(dst *ImageBuf, opts ...AlgoOpts) error {
opt := flatAlgoOpts(opts)
err := checkBufAndROI(dst, opt.ROI)
if err != nil {
return err
}
ok := bool(C.zero(dst.ptr, opt.ROI.validOrAllPtr(), C.int(opt.Threads)))
if !ok {
return dst.LastError()
}
return nil
}
func testSigaltstack(t *testing.T) {
switch {
case runtime.GOOS == "solaris", runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64"):
t.Skipf("switching signal stack not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
}
C.changeSignalStack()
defer C.restoreSignalStack()
defer func() {
if recover() == nil {
t.Error("did not see expected panic")
}
}()
v := 1 / int(C.zero())
t.Errorf("unexpected success of division by zero == %d", v)
}