LOG1P

Section: Linux Programmer's Manual (3)
Updated: 2002-07-27
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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);
Compile with -std=c99; link with -lm.  

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 long double variants are C99 requirements.  

SEE ALSO

exp(3), expm1(3), log(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
CONFORMING TO
SEE ALSO

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