Работает для меня:
$dom = new \DOMDocument;
$dom->loadHTML(utf8_decode($html));
...
return utf8_encode( $dom->saveHTML());
Вы можете использовать K.clip(unprotected_acos_input, -1, 1)
.
>> a = np.linspace(-1.01, 1.01, 20)
array([-1.01 , -0.90368421, -0.79736842, -0.69105263, -0.58473684,
-0.47842105, -0.37210526, -0.26578947, -0.15947368, -0.05315789,
0.05315789, 0.15947368, 0.26578947, 0.37210526, 0.47842105,
0.58473684, 0.69105263, 0.79736842, 0.90368421, 1.01 ])
>> K.eval(tf.acos(K.variable(a)))
array([ nan, 2.69909317, 2.49371832, 2.33374068, 2.19535195,
2.06965208, 1.95207246, 1.83981909, 1.73095382, 1.62397929,
1.51761336, 1.41063884, 1.30177357, 1.1895202 , 1.07194058,
0.9462407 , 0.80785197, 0.64787434, 0.44249948, nan])
>> K.eval(tf.acos(K.clip(K.variable(a), -1, 1)))
array([3.14159265, 2.69909317, 2.49371832, 2.33374068, 2.19535195,
2.06965208, 1.95207246, 1.83981909, 1.73095382, 1.62397929,
1.51761336, 1.41063884, 1.30177357, 1.1895202 , 1.07194058,
0.9462407 , 0.80785197, 0.64787434, 0.44249948, 0. ])