- NAME
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cosh - hyperbolic cosine function.
- SYNOPSIS
#include <math.h>
double cosh(double x);- DESCRIPTION
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The cosh() function returns the hyperbolic cosine of x, which is defined mathematically as exp(x) + exp(-x) / 2.
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Warning
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You’ll also need to link the program against the math library (see example below) using the -lm compile/link option.
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- SEE ALSO
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sinh, tanh
- EXAMPLE
link:src/cosh.c[role=include]- OUTPUT
$ gcc -Wall -lm cosh.c $ ./a.out cosh(0.000000) = 1.000000 cosh(1.000000) = 1.543081 cosh(2.000000) = 3.762196 cosh(3.000000) = 10.067662 cosh(4.000000) = 27.308233 cosh(5.000000) = 74.209946 cosh(6.000000) = 201.715637