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man pages->NetBSD man pages -> cosh (3)
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## COSH(3)

```
```

### NAME[Toc][Back]

```     cosh, coshf - hyperbolic cosine function
```

### LIBRARY[Toc][Back]

```     Math Library (libm, -lm)
```

### SYNOPSIS[Toc][Back]

```     #include <math.h>

double
cosh(double x);

float
coshf(float x);
```

### DESCRIPTION[Toc][Back]

```     The cosh() and coshf() functions compute the hyperbolic cosine of x.
```

### RETURN VALUES[Toc][Back]

```     If the magnitude of x is too large, cosh(x) and coshf(x) return Inf and
sets the global variable errno to ERANGE.
```

```     acos(3), asin(3), atan(3), atan2(3), cos(3), math(3), sin(3), sinh(3),
tan(3), tanh(3)
```

### STANDARDS[Toc][Back]

```     The cosh() function conforms to ANSI X3.159-1989 (``ANSI C'').

BSD                               May 2, 1991                              BSD
```
[ Back ]
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