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RedHat 9 (Linux i386) - man page for expm1 (redhat section 3)

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EXPM1(3)			    Linux Programmer's Manual				 EXPM1(3)

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

SYNOPSIS
       #include <math.h>

       double expm1(double x);

       double log1p(double x);

DESCRIPTION
       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  inaccu-
       rate 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
       BSD

SEE ALSO
       exp(3), log(3)

GNU					    1995-09-16					 EXPM1(3)
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