tf.math.polyval | TensorFlow v2.0.0 (original) (raw)

tf.math.polyval

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Computes the elementwise value of a polynomial.

Compat aliases for migration

tf.compat.v1.math.polyval

tf.math.polyval(
    coeffs, x, name=None
)

If x is a tensor and coeffs is a list n + 1 tensors, this function returns the value of the n-th order polynomial

p(x) = coeffs[n-1] + coeffs[n-2] * x + ... + coeffs[0] * x**(n-1)

evaluated using Horner's method, i.e.

p(x) = coeffs[n-1] + x * (coeffs[n-2] + ... + x * (coeffs[1] + x * coeffs[0]))

Args
coeffs	A list of Tensor representing the coefficients of the polynomial.
x	A Tensor representing the variable of the polynomial.
name	A name for the operation (optional).

Returns
A tensor of the shape as the expression p(x) with usual broadcasting rules for element-wise addition and multiplication applied.

Equivalent to numpy.polyval.