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LOG1P (3) | C library functions | Unix Manual Pages | :man

NAME

log1p - logarithm of 1 plus argument

CONTENTS

Synopsis
Description

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 requirements.

"SEE ALSO"

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


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