cos, cosf, cosh, coshf
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cos, cosf, cosh, coshf

Calculate the cosine (cos or cosf) or hyperbolic cosine (cosh or coshf).

double cos( 
   double x 
);
float cos(
   float x 
);  // C++ only
long double cos(
   long double x
);  // C++ only
float cosf( 
   float x 
);
double cosh( 
   double x 
);
float cosh(
   float x 
);  // C++ only
long double cosh(
   long double x
);  // C++ only
float coshf(
   float x 
);

x

Angle in radians.

The cosine or hyperbolic cosine of x. If x is greater than or equal to 263, or less than or equal to –263, a loss of significance in the result of a call to cos occurs.

If the result is too large in a cosh or coshf call, the function returns HUGE_VAL and sets errno to ERANGE, by default.

Input

SEH Exception

Matherr Exception

± QNAN,IND

none

_DOMAIN

± ∞ (cosf, cos)

INVALID

_DOMAIN

x ≥ 7.104760e+002 (cosh, coshf)

INEXACT+OVERFLOW

OVERFLOW

C++ allows overloading, so you can call overloads of cos and cosh. In a C program, cos and cosh always take and return a double.

Routine

Required header

cos, cosh, cosf, coshf

<math.h>

For additional compatibility information, see Compatibility in the Introduction.

See the example in sin, sinf, sinh, sinhf.

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