cos, cosf, cosl, cosh, coshf, coshl

  • Article

Calculates the cosine (cos, cosf, or cosl), or hyperbolic cosine (cosh, coshf, or coshl).

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

Parameters

  • x
    Angle in radians.

Return Value

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, cosf, or cosl occurs.

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

Input

SEH Exception

Matherr Exception

± QNAN,IND

none

_DOMAIN

± ∞ (cosf, cos, cosl)

INVALID

_DOMAIN

x ≥ 7.104760e+002 (cosh, coshf, coshl)

INEXACT+OVERFLOW

OVERFLOW

Remarks

Because C++ allows overloading, you can call overloads of cos and cosh that take and return float or long double values. In a C program, cos and cosh always take and return a double.

Requirements

Routine

Required header

cos, cosh, cosf, coshf, cosl, coshl

<math.h>

For additional compatibility information, see Compatibility.

Example

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

.NET Framework Equivalent

See Also

Reference

Floating-Point Support

acos, acosf, acosl

asin, asinf, asinl

atan, atanf, atanl, atan2, atan2f, atan2l

_matherr

sin, sinf, sinl, sinh, sinhf, sinhl

tan, tanf, tanl, tanh, tanhf, tanhl

_CIcos