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[XLA] Fix comment on asinh implementation.

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PiperOrigin-RevId: 247066151
This commit is contained in:
Justin Lebar 2019-05-07 12:12:41 -07:00 committed by TensorFlower Gardener
parent d1c071a402
commit 0f5eac4cd5
1 changed files with 3 additions and 3 deletions
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6
tensorflow/compiler/xla/client/lib/math.cc
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@ -574,9 +574,9 @@ XlaOp Acosh(XlaOp x) {
// If x^2 will overflow and x is positive, we can approximate x + sqrt(x^2 + 1)
// as 2*x and return log(2) + log(x).
//
// If x is negative, the above would give us some trouble, because we'd need to
// approximate x + sqrt(sqrt(x^2 + 1) - abs(x). But we're saved
// by the fact that asinh(-x) = -asinh(x).
// If x is negative, the above would give us some trouble; we can't approximate
// the result as x + abs(x) = 0! But we're saved by the fact that asinh(-x) =
// -asinh(x).
XlaOp Asinh(XlaOp x) {
XlaBuilder* b = x.builder();
auto do_it = [&](XlaOp x) -> StatusOr<XlaOp> {