NAME    [Toc]    [Back]

       expm1, log1p - exponential minus 1, logarithm of 1 plus argument

SYNOPSIS    [Toc]    [Back]

       #include <math.h>

       double expm1 ( double x );

       double log1p ( double x );

DESCRIPTION    [Toc]    [Back]

       expm1(x) returns a value equivalent to `exp (x) - 1'. It is computed in
       a way that is accurate even if the value of  x  is  near  zero--a  case
       where  `exp (x) - 1' would be inaccurate due to subtraction of two numbers
 that are nearly equal.

       log1p(x) returns a value equivalent to `log (1 + x)'. It is computed in
       a way that is accurate even if the value of x is near zero.

CONFORMING TO    [Toc]    [Back]

       BSD

SEE ALSO    [Toc]    [Back]

       exp(3), log(3)



GNU				  1995-09-16			      EXPM1(3)