COSH
Section: Linux Programmer's Manual (3)
Updated: 2002-07-27
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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
SVID 3, POSIX, BSD 4.3, ISO 9899 (C99).
The float and the long double variants are C99 requirements.
SEE ALSO
acosh(3),
asinh(3),
atanh(3),
H.BR ccos (3),
sinh(3),
tanh(3)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- CONFORMING TO
-
- SEE ALSO
-
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