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coshl (3)
COSH(3) Linux Programmer's Manual COSH(3)
NAME
cosh, coshf, coshl - hyperbolic cosine function
SYNOPSIS
#include <math.h>
double cosh(double x);
float coshf(float x);
long double coshl(long double x);
Link with -lm.
DESCRIPTION
The cosh() function returns the hyperbolic cosine of x, which is
defined mathematically as (exp(x) + exp(-x)) / 2.
CONFORMING TO
SVr4, POSIX, 4.3BSD, C99. The float and the long double variants are
C99 requirements.
SEE ALSO
acosh(3), asinh(3), atanh(3), ccos(3), sinh(3), tanh(3)
2002-07-27 COSH(3)
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