COS(3) | Library Functions Manual | COS(3) |
cos
— cosine
function
#include
<math.h>
double
cos
(double
x);
long double
cosl
(long
double x);
float
cosf
(float
x);
The
cos
()
function computes the cosine of x (measured in
radians).
cos
(±0)
returns 1.
cos
(±infinity)
returns a NaN and raises the "invalid" floating-point
exception.
If you need to apply the cos
() function to
SIMD vectors or arrays, using the following functions provided by the
Accelerate.framework may give significantly better performance:
#include
<Accelerate/Accelerate.h>
vFloat
vcosf
(vFloat
x);
vFloat
vsincosf
(vFloat
x, vFloat *c);
void
vvcosf
(float
*y, const float *x, const int
*n);
void
vvcos
(double
*y, const double *x, const int
*n);
void
vvsincosf
(float
*s, float *c, const float
*x, const int *n);
void
vvsincos
(double
*s, double *c, const double
*x, const int *n);
sin(3), tan(3), asin(3), acos(3), atan(3), atan2(3), sinh(3), cosh(3), tanh(3), math(3)
The cos
() function conforms to ISO/IEC
9899:2011.
December 11, 2006 | macOS 14.6 |