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Computes the natural logarithm of a specified value plus 1 (x + 1).

When x is near 0, this node is more accurate than adding 1 to x then using the Natural Logarithm node. If x is equal to -1, the result is - . If x is not complex and is less than -1, the result is not a number (NaN).

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x

An input to this operation.

This input supports scalar numbers, arrays or clusters of numbers, and arrays of clusters of numbers.

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ln(x+1)

Result of the operation.

This output assumes the same numeric representation as x. When x is of the form x = a + bi, that is, when x is complex, the following equation defines ln(x+1):
ln ( x + 1 ) = ln ( | x + 1 | ) + i arctan 2 ( b , a + 1 )