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NAME

expm1, expm1f, expm1l - exponential minus 1  

SYNOPSIS

#include <math.h>

double expm1(double x);

float expm1f(float x);

long double expm1l(long 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 inaccurate due to subtraction of two numbers that are nearly equal.  

CONFORMING TO

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

SEE ALSO

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

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Index

NAME

SYNOPSIS

DESCRIPTION

CONFORMING TO

SEE ALSO