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Computes the inverse to tf.math.igammac with respect to p.

This function is defined as the solution x to the equation p = tf.math.igammac(a, x).


[1] A. Didonato and A. Morris, Computation of the Incomplete Gamma Function Ratios and their Inverse

a A positive float Tensor. Must be broadcastable with p.
p A float Tensor whose entries lie in [0, 1]. Must be broadcastable with a.
name Optional Python str naming the operation.

igammacinv igammacinv(a, p). Has same type as a.