function softplus_(x) {
    const $x = (0, _tensorUtilEnv.convertToTensor)(x, "x", "softplus");
    const inputs = {
        x: $x
    };
    return (0, _engine.ENGINE).runKernel((0, _kernelNames.Softplus), inputs);
}
Computes softplus of the input `tf.Tensor` element-wise: `log(exp(x) + 1)`

```js
const x = tf.tensor1d([0, 1, -1, .7]);

x.softplus().print();  // or tf.softplus(x)
```
@param x The input tensor.

@doc {heading: 'Operations', subheading: 'Basic math'}