**CIGAL Reference Manual, Chapter 0 (log): **
===== Log -- Calculate the logarithm of a variable =====
**usage: result = log(x)**

The LOG function returns the logarithm of its argument (base 10). If
the input value is too large (>= 13) the routine returns 0.  If the
input X is a variable with more than one value, LOG will generate an
output variable of logarithms with the same number of values.

**See Also:**\\
[[jvs:cigal:manual:chapter3:alog|ALOG(3)]]

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