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erf.ts
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/**
* @license
* Copyright 2018 Google LLC. All Rights Reserved.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* =============================================================================
*/
import {ENGINE} from '../engine';
import {Erf, ErfInputs} from '../kernel_names';
import {Tensor} from '../tensor';
import {NamedTensorMap} from '../tensor_types';
import {convertToTensor} from '../tensor_util_env';
import {TensorLike} from '../types';
import * as util from '../util';
import {cast} from './cast';
import {op} from './operation';
/**
* Computes Gauss error function of the input `tf.Tensor` element-wise:
* `erf(x)`
*
* ```js
* const x = tf.tensor1d([0, .1, -.1, .7]);
*
* x.erf().print(); // or tf.erf(x);
* ```
* @param x The input tensor.
*
* @doc {heading: 'Operations', subheading: 'Basic math'}
*/
function erf_<T extends Tensor>(x: T|TensorLike): T {
let $x = convertToTensor(x, 'x', 'erf');
util.assert(
$x.dtype === 'int32' || $x.dtype === 'float32',
() => 'Input dtype must be `int32` or `float32`.');
if ($x.dtype === 'int32') {
$x = cast($x, 'float32');
}
const inputs: ErfInputs = {x: $x};
return ENGINE.runKernel(Erf, inputs as unknown as NamedTensorMap);
}
export const erf = /* @__PURE__ */ op({erf_});