use torch builtin arctanh method

cleverhans-lab / cleverhans

An adversarial example library for constructing attacks, building defenses, and benchmarking both

MIT License

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Closed redwrasse closed 3 years ago

redwrasse commented 3 years ago

use torch builtin arctanh method in torch implementation of carlini-wagner_l2

jonasguan commented 3 years ago

Lgtm, thanks @redwrasse !