<HEAD> <TITLE> log - returns the natural logarithm of a float </TITLE> </HEAD> <BODY BACKGROUND=http://www.imaginary.com/~beek/gifs/bg.jpg TEXT=#000000 ALINK=#FFFF00 VLINK=#550000 LINK=#000099> <center> <H1> log - returns the natural logarithm of a float </H1> </center> <p> <b> float log( float f ); </b> <p> This efun is only available if PACKAGE_MATH is compiled in. <p> Returns the natural logarithm of its argument, `f'. `f' must be positive. <p> See also: <A HREF=exp.html> exp </A>, <A HREF=pow.html> pow </A>, <A HREF=sqrt.html> sqrt </A>