LOG1P(3) Linux Programmer’s Manual LOG1P(3)
NAME
log1p - logarithm of 1 plus argument
SYNOPSIS
#include <math.h>
double log1p(double x);
float log1pf(float x);
long double log1pl(long double x);
DESCRIPTION
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, C99. The float and the long double variants are C99 require-
ments.
SEE ALSO
exp(3), log(3), expm1(3)
2002-07-27 LOG1P(3)