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Manual Reference Pages  - EXPM1 (3)

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expm1, expm1f, expm1l - exponential minus 1

CONTENTS

Synopsis
Description

#include <math.h> 



double expm1(double x); 



float expm1f(float x); 



long double expm1l(long double x); 

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.

BSD, C99. The float and the long double variants are C99 requirements.

exp(3), log(3), log1p(3)

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