LN10: natural logarithm of ten

LN10 is ln(10), approximately 2.302585. It converts between natural-logarithm and base-10 logarithm expressions.

Practical use

Use log() for natural logarithms and log10() for base-10 values. LN10 appears in the identity ln(x) = LN10 × log10(x).

Caveat

Logarithms of real values require positive arguments. Preserve the constant exactly until final numeric output with numeric().